HomeMy WebLinkAboutWestern Steel Erection plan review notes IIL
ORONO COPY
To: FILE- 2687 Wayzata Blvd.
From: Lyle Oman Building Official
Date: 12-18-01
Subject: Western Steel Erection -Plan review notes
Occupancy Classification; B-2
Proposed Occupancy Classification; H-4 Repair garage with welding
Allowable area; 5,100 sq. ft.
Allowable increase- open 3 sides, 2.5 X 5,100 = 127.5 X 19.4 = 2,473.5
2,472 + 5,100 (basic allowable) = 7,573.5
7,573.5 X 3 (for sprinkler system) =22,720
22,720 allowed, 16,000 proposed, building size O.K.
Max Height; 40 ft. Proposed; <40' building height O.K.
Location on property; O.K.
Special conditions; Group H-4 division 4 with more than 3000 sq. ft. requires a fire sprinkler
system per Uniform Building Code Section 904.2.6.2
Exiting; Provide illuminated Exit signage and emergency lighting at all exit doors
Occupancy separation; one hour occupancy separation required between office and shop
one hour rated assemblies required at opening
Handrails on stairs must meet current code requirements
Provide structural engineers approval on fuel station canopy
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ORONO COPY-2.4
1997 UNIFORM BUILDING CODE 01
Volume I
Chapter 1
ADMINISTRATION
SECTION 101 —TITLE, PURPOSE AND SCOPE may institute any other appropriate action to prevent,restrain,cor-
rect or abate the violation..
101.1 Title. These regulations shall be known as the Uniform
Building Code, may be cited as such and will be referred to herein
as"this code." SECTION 103—VIOLATIONS
101.2 Purpose. The purpose of this code is to provide minimum It shall be unlawful for any parson,firm or corporation to erect,
standards to safeguard life or limb, health, property and public construct,enlarge,alter,repair,move,improve,remove,convert
welfare by regulating and controlling the design, construction, or demolish,equip,use,occupy or maintain any building or struc-
quality of materials,use and occupancy,location and maintenance ture or cause or permit the same to be done in violation of this
of all buildings and structures within this jurisdiction and certain code.
equipment specifically regulated herein.
The purpose of this code is not to create or otherwise establish or SECTION 104—ORGANIZATION AND
designate any particular class or group of persons who will or ENFORCEMENT
should be especially protected or benefited by the terms of this
code. 104.1 Creation of Enforcement Agency. There is hereby estab-
lished in this jurisdiction a code enforcement agency which shall
1013 Scope. The provisions of this code shall apply to the be under the administrative and operational control of the building
construction,alteration,moving,demolition,repair,maintenance official.
and use of any building or structure within this jurisdiction,except 104.2 Powers and Duties of Building Official.
wo�r cocated primarily in a public way,public utility towers and
poles, mechanical equipment not specifically regulated in this 104.2.1 General. The building official is hereby authorized and
code,and hydraulic flood control structures. directed to enforce all the provisions of this code. For such pur-
For additions, alterations, moving and maintenance of build- poses,the building official shall have the powers of a law enforce-
ings and structures,see Chapter 34.For temporary buildings and ment officer.
structures see Section 3103 and Appendix Chapter 31. The building official shall have the power to render interpreta-
Where,in any specific case,different sections of this code spec- tions of this code and to adopt and enforce rules and supplemental
ify different materials,methods of construction or other require- regulations to clarify the application of its provisions.Such inter-
ments,the most restrictive shall govern.Where there is a conflict pretations,rules and regulations shall be in conformance with the
between a general requirement and a specific requirement, the intent and purpose of this code.
specific requirement shall be applicable. 104.2.2 Deputies. In accordance with prescribed procedures
Wherever in this code reference is made to the appendix, the and with the approval of the appointing authority,the building of-
provisions in the appendix shall not apply unless specifically ficial may appoint such number of technical officers and inspec-
adopted. tors and other employees as shall be authorized from time to time.
The building official may deputize such inspectors or employees
as may be necessary to carry out the functions of the code enforce-
SECTION 102—UNSAFE BUILDINGS OR ment agency.
STRUCTURES 104.2.3 Right of entry. When it is necessary to make an inspec-
All buildings or structures regulated by this code that are structur- tion to enforce the provisions of this code,or when the building
ally unsafe or not provided with adequate egress,or that constitute official has reasonable cause to believe that there exists in a build-
a fire hazard,or are otherwise dangerous to human life are,for the ing or upon a premises a condition that is contrary to or in violation
purpose of this section,unsafe.Any use of buildings or structures of this code that makes the building or premises unsafe,dangerous
constituting a hazard to safety,health or public welfare by reason or hazardous,the building official may enter the building or prem-
of inadequate maintenance,dilapidation,obsolescence, fire haz- ises at reasonable times to inspect or to perform the duties imposed
ard, disaster,damage or abandonment is, for the purpose of this by this code,provided that if such building or premises be occu-
section, an unsafe use. Parapet walls, cornices, spires, towers, pied that credentials be presented to the occupant and entry re-
tanks, statuary and other appendages or structural members that quested.If such building or premises be unoccupied,the building
are supported by,attached to,or a part of a building and that are in official shall first make a reasonable effort to locate the owner or
deteriorated condition or otherwise unable to sustain the design other person having charge or control of the building or premises
loads that are specified in this code are hereby designated as un- and request entry. If entry is refused, the building official shall
safe building appendages. have recourse to the remedies provided by law to secure entry.
All such unsafe buildings,structures or appendages are hereby 104.2.4 Stop orders. Whenever any work is being done con-
declared to be public nuisances and shall be abated by repair,reha- trary to the provisions of this code,or other pertinent laws or ordi-
bilitation, demolition or removal in accordance with the proce- nances implemented through the enforcement of this code, the
dures set forth in the Dangerous Buildings Code or such alternate building official may order the work stopped by notice in writing
procedures as May have been or as may be adopted by this jurisdic- served on any persons engaged in the doing or causing such work
tion.As an alternative,the building official,or other employee or to be done,and any such persons shall forthwith stop such work
official of this jurisdiction as designated by the governing body, until authorized by the building official to proceed with the work.
1-1
104'2'5 1997 UNIFORM L�ALDING CODE
106.2
104.2.5 Occupancy violations. Whenever any building or Test methods shall be as specified by this code or by other rec-
structure or equipment therein regulated by this code is being used ognized test standards.If there are no recognized and accepted test
contrary to the provisions of this code,the building official may methods for the proposed alternate,the building official shall de-
order such use discontinued and the structure,or portion thereof, termine test procedures.
vacated by notice served on any person causing such use to be con- All tests shall be made by an approved agency.Reports of such
tinued.Such person shall discontinue the use within the time pre- tests shall be retained by the building official for the period re-
scribed by the building official after receipt of such notice to make quired for the retention of public records.
the structure,or portion thereof,comply with the requirements of
this code. 104.2.10 Cooperation of other .officials and officers. The
building official may request,ant1stiall receive,the assistance and
104.2.6 Liability. The building official charged with the en- cooperation of other officials of this jurisdiction so far as is re-
forcement of this code,acting in good faith and without malice in quired in the discharge of the duties required by this code or other
the discharge of the duties required by this code or other pertinent pertinent law or ordinance.
law or ordinance shall not thereby be rendered personally liable
for damages that may accrue to persons or property as a result of an
act or by reason of an act or omission in the discharge of such du- SECTION 105—BOARD OF APPEALS
ties.A suit brought against the building official or employee be-
cause of such act or omission performed by the building official or 105.1 General. In order to hear and decide appeals of orders,de-
employee in the enforcement of any provision of such codes or cisions or determinations made by the building official relative to
other pertinent laws or ordinances implemented through the en- the application and interpretation of this code,there shall be and is
forcement of this code or enforced by the code enforcement hereby created a board of appeals consisting of members who are
agency shall be defended by this jurisdiction until final termina- qualified by experience and training to pass on matters pertaining
tion of such proceedings,and any judgment resulting therefrom to building construction and who are not employees of the juris-
shall be assumed by this jurisdiction. diction.The building official shall be an ex officio member of and
shall act as secretary to said board but shall have no vote on any
This code shall not be construed to relieve from or lessen the re- matter before the board.The board of appeals shall be appointed
sponsibility of any person owning, operating or controlling any by the governing body and shall hold office at its pleasure.The
building or structure for any damages to persons or property board shall adopt rules of procedure for conducting its business,
caused by defects, nor shall the code enforcement agency or its and shall render all decisions and findings in writing to the appel-
parent jurisdiction be held as assuming any such liability by rea- lant with a duplicate copy to the building official.
son of the inspections authorized by this code or any permits or
certificates issued under this code. 105.2 Limitations of Authority. The board of appeals shall
have no authority relative to interpretation of the administrative
104.2.7 Modifications. When there are practical difficulties in- provisions of this code nor shall the board be empowered to waive
volved in carrying out the provisions of this code,the building of- requirements of this code.
ficial may grant modifications for individual cases.The building
official shall first find that a special individual reason makes the
strict letter of this code impractical and that the modification is in SECTION 106—PERMITS
conformance with the intent and purpose of this code and that such 106.1 Permits Required. Except as specified in Section 106.2,
modification does not lessen any fire-protection requirements or no building or structure regulated by this code shall be erected,
any degree of structural integrity.The details of any action grant- constructed, enlarged, altered, repaired, moved, improved, re-
ing modifications shall be recorded and entered in the files of the moved,converted or demolished unless a separate permit for each
code enforcement agency. building or structure has first been obtained from the building offi-
104.2.8 Alternate materials,alternate design and methods of cial.
construction. The provisions of this code are not intended to pre- 106.2 Work Exempt from Permit. A building permit shall not
vent the use of any material, alternate design or method of be required for the following:
construction not specifically prescribed by this code, provided
any alternate has been approved and its use authorized by the 1. One-story detached accessory buildings used as tool and
building official. storage sheds, playhouses, and similar uses, provided the floor
-).
The building official may approve any such alternate,provided area
the building official finds that the proposed design is satisfactory 2 Fences not over 6 feet(1829 mm)high.
and complies with the provisions of this code and that the material, 3. Oil derricks.
method or work offered is, for the purpose intended, at least the
equivalent of that prescribed in this code in suitability,strength, 4. Movable cases, counters and partitions not over 5 feet
effectiveness, fire resistance,durability,safety and sanitation. 9 inches(1753 mm)high.
The building official shall require that sufficient evidence or 5. Retaining walls that are not over 4 feet(1219 mm)in height
proof be submitted to substantiate any claims that may be made measured from the bottom of the footing to the top of the wall,un-
regarding its use.The details of any action granting approval of an less supporting a surcharge or impounding Class I,II or III-A liq-
alternate shall be recorded and entered in the files of the code en-
forcement agency. 6. Water tanks supported directly upon grade if the capacity
does not exceed 5,000 gallons(18 927 L)and the ratio of height to
104.2.9 Tests. Whenever there is insufficient evidence of com- diameter or width does not exceed 2:1.
pliance with any of the provisions of this code or evidence that any 7. platforms, walks and driveways not more than 30 inches
material or construction does not conform to the requirements of (762 mm)above grade and not over any basement or story below.
this code,the building official may require tests as proof of com-
pliance to be made at no expense to this jurisdiction. 8. Painting,papering and similar finish work.
1-2
108.8-109.6 1997 UNIFORM BUILDING CODE
TABLE 1-A
reinspection fee in accordance with Table I-A or as set forth in the 1. The building permit number.
fee schedule adopted by the jurisdiction.
2. The address of the building.
In instances where reinspection fees have been assessed, no 3. The name and address of the owner.
additional inspection of the work will be performed until the re-
quired fees have been paid. 4. A description of that portion of the building for which the
certificate is issued.
SECTION 109-CERTIFICATE OF OCCUPANCY 5. A statement that the described portion of the building has
been inspected for compliance with the requirements of this code
109.1 Use and Occupancy. No building or structure shall be for the group and division of occupancy and the use for which the
used or occupied,and no change in the existing Occupancy,classi- proposed occupancy is classified.
fica� tion of a building or structure or portion thereof shall be made 6. The name of the building oicial.
until the building official has issued a certificate of occupancy
therefor as provided herein. 109.4 Temporary Certificate. If the building official finds that
EXCEPTION:Group R,Division 3 and Group U Occupancies. no substantial hazard will result from occupancy of any building
or portion thereof before the same is completed,a temporary cer-
Issuance of a certificate of occupancy shall not be construed as tificate of occupancy may be issued for the use of a portion or por-
an approval of a violation of the provisions of this code or of other tions of a building or structure prior to the completion of the entire
ordinances of the jurisdiction.Certificates presuming to give au- building or structure.
thority to violate or cancel the provisions of this code or other ordi-
nances of the jurisdiction shall not be valid. 109.5 Posting. The certificate of occupancy shall be posted in a
conspicuous place on the premises and shall not be removed ex-
109.2 Change in Use. Changes in the character or use of a build- cept by the building official.
ing shall not be made except as specified in Section 3405 of this
code. 109.6 Revocation. The building official may, in writing, sus-
pend or revoke a certificate of occupancy issued under the provi-
109.3 Certificate Issued. After the building official inspects the cions of this code whenever the certificate is issued in error,or on
building or structure and finds no violations of the provisions of the basis of incorrect information supplied, or when it is deter-
this code or other laws that are enforced by the code enforcement mined that the building or structure or portion thereof is in viola-
agency,the building official shall issue a certificate of occupancy tion of any ordinance or regulation or any of the provisions of this
that shall contain the following: code.
TABLE 1-A-BUILDING PERMIT FEES
TOTAL VALUATION FEE
S 1.00 to$500.00 $23.50
$501.00 to$2,000.00 $23.50 for the first$500.00 plus$3.05 for each additional$100.00,or fraction thereof,to and
including 52,000.00
$2,001.00 to 525,000.00 $69.25 for the first$2,000.00 plus$14.00 for each additional S1,000.00,or fraction thereof,to
and including$25,000.00
525,001.00 to S50,000.00 5391.25 for the first$25,000.00 plus S 10.10 for each additional S1,000.00,or fraction thereof,
to and including$50,000.00
$50,001.00 to 5100,000.00 5643.75 for the first$50,000.00 plus$7.00 for each additional S 1,000.00,or fraction thereof,
to and including S 100,000.00
$100,001.00 to$500,000.00 $993.75 for the first S100,000.00 plus$5.60 for each additional 51,000.00,or fraction thereof,
to and including S500,000.00
$500,001.00 to$1,000,000.00 S3,233.75 for the first 5500,000.00 plus$4.75 for each additional$1,000.00,or fraction
thereof,to and including S 1,000,000.00
S1,000,001.00 and up $5,608.75 for the first 51,000,000.00 plus$3.15 for each additional 51,000.00,or fraction
thereof
Other Inspections and Fees:
1. Inspections outside of normal business hours .......................................................................
(minimum charge-two hours) $47.00 per hours
2. Reinspection fees assessed under provisions of Section 305.8 .......................................................... S47.00 per hours
3. Inspections for which no fee is specifically indicated ................................................................. $47.00 per hourt
(minimum charge-one-half hour)
4. Additional plan review required by changes,additions or revisions to plans ....................................
g ........... 547.00 per hours
(minimum char, hour)
5. For use of outside consultants for plan checking and inspections,or both .................................................... Actual costs2
iOr the total hourly cost to the jurisdiction,whichever is the greatest.This cost shall include supervision,overhead,equipment,hourly wages and fringe benefits of
the employees involved.
2Actual costs include administrative and overhead costs.
1-6
i
TABLE NO.5-A—WALL AND OPENING PROTECTION OF OCCUPANCIES BASED ON LOCATION ON PROPERTY
TYPES If ONE-HOUR,11-N AND V CONSTRUCTION:For exterior wall and opening protection of Types II One-hour,II-N and V
buildings,see table below and Sections 504,709,1903 and 2203. Z
This table does not apply to Types I,II-F.R.,III and IV construction,see Sections 1803,1903,2003 and 2103. -n
FIRE RESISTANCE OF OPENINGS IN 0
GROUP DESCRIPTION OF OCCUPANCY EXTERIOR WALLS EXTERIOR WALLS'
I—Any assembly building or portion of a building with a legitimate stage W
and an occupant load of 1,000 or more Not applicable(See Sections 602 and 603) C
1=
v
2—Any building or portion of a building having an assembly room with an Z
A occupant load of less than 1,000 and a legitimate stage 2 hours less than 10 Not permitted less than M
See also —Any building or portion of a building having an assembly room with an 5 feet A
I hour less than
Section occupant load of 300 or more without a legitimate stage,including such feet, Protected less than O
602 buildings used for educational purposes and not classed as a Group E or 40 feet 10 feet m
Group B,Division 2 Occupancy
3—Any building or portion of a building having an assembly room with an Not permitted less than
occupant load of less than 300 without a stage,including such buildings 2 hours less than 5 feet, 5 feet i
used for educational purposes and not classed as a Group E or Group B, I hour less than 20 feet' Protected less than
Division 2 Occupancy 10 feet
4—Stadiums,reviewing stands and amusement park structures not included I hour less tht Protected less than
an 10 fee
within other Group A Occupancies 10 feet
l—Repair garages where work is limited to exchange of parts and
maintenance requiring no open flame,welding,or use of Class 1,II or
III-A liquids
B 2—Drinking and dining establishments having an occupant load of less than Not permitted less than z
See also 50,wholesale and retail stores,office buildings,printing plants,police I hour less than 20 feet 5 feet
Section and fire stations,factories and workshops using material no i hly Protected less than
702 Flammable or combustible storage an saes rooms for combus ib a 10 feet
goods,paint stores wit out bulk handling
Buildings or portions of buildings having rooms used for educational
purposes,beyond the 12th grade,with less than 50 occupants in any room
Ur
cn (Continued) D
1997 UNIFORM BUILDING CODE TABLE 3-A
TABLE 3-A—DESCRIPTION OF OCCUPANCIES BY GROUP AND DIVISION1
GROUPAND
DIVISION SECTION DESCRIPTION OF OCCUPANCY
A-1 A building or portion of a building having an assembly room with an occupant load of 1,000 or more and a
legitimate stage.
A-2 A building or portion of a building having an assembly room with an occupant load of less than 1,000 and a
legitimate stage.
A-2.1 A building or portion of a building having an assembly room with an occupant load of 300 or more without a
303.1.1 legitimate stage,including such buildings used for educational purposes and not classed as a Group E or Group B
Occupancy.
A-3 Any building or portion of a building having an assembly room with an occupant load of less than 300 without a
legitimate stage,including such buildings used for educational purposes and not classed as a Group E or Group B
Occupancy.
A-4 Stadiums,reviewing stands and amusement park structures not included wit*other Group A Occupancies.
B 304.1 A building or structure,or a portion thereof,for office,professional or service-type transactions,including storage of
C;(rrecords and accounts;eating and drinking establishments with an occupant load of less than 50.
E-1 Any building used for educational purposes through the 12th grade by 50 or more persons for more than 12 hours
per week or four hours in any one day.
E-2 305.1 Any building used for educational purposes through the 12th grade by less than 50 persons for more than 12 hours
per week or four hours in any one day.
E-3 Any building or portion thereof used for day-care purposes for more than six persons.
F-1 Moderate-hazard factory and industrial occupancies include factory and industrial uses not classified as Group F,
Division 2 Occupancies.
306.1
F_2 Low-hazard factory and industrial occupancies include facilities producing noncombustible or nonexplosive
materials that during finishing,packing or processing do not involve a significant fire hazard.
H-1 Occupancies with a quantity of material in the building in excess of those listed in Table 3-D that present a high
explosion hazard as listed in Section 307.1.1.
n H-2 Occupancies with a quantity of material in the building in excess of those listed in Table 3-D that present a moderate
f'
307explosion hazard or a hazard from accelerated burning as listed in Section 307.1.1.
S H-3 '1 Occupancies with a quantity of material in the building in excess of those listed in Table 3-D that present a high fire
or physical,hazard as listed in Section 307.1.1.
H-4 Repair garages not classified as Group S,Division 3 Occupancies.
H-5 Aircraft repair hangars not classified as Group S,Division 5 Occupancies and heliports.
H-6 307.1 Semiconductor fabrication facilities and comparable research and development areas when the facilities in which
and hazardous production materials are used,and the aggregate quantity of material is in excess of those listed in Table
307.11 3-D or 3-E.
H-7 307.1 Occupancies having quantities of materials in excess of those listed in Table 3-E that are health hazards as listed in
Section 307.1.1.
1-1.1 Nurseries for the full-time care of children under the age of six(each accommodating more than five children),
hospitals,sanitariums,nursing homes with nonambulatory patients and similar buildings(each accommodating more
than five patients).
1-1.2 Health-care centers for ambulatory patients receiving outpatient medical care which may render the patient
308.1 incapable of unassisted self-preservation(each tenant space accommodating more than five such patients)-
1-2 Nursing homes for ambulatory patients,homes for children six years of age or over(each accommodating more than
five persons).
I-3 Mental hospitals,mental sanitariums,jails,prisons,reformatories and buildings where personal liberties of inmates
are similarly restrained.
M 309.1 A building or structure,or a portion thereof,for the display and sale of merchandise,and involving stocks of goods,
wares or merchandise,incidental to such purposes and accessible to the public.
R-1 310.1 Hotels and apartment houses,congregate residences(each accommodating more than 10 persons).
R-3 Dwellings,lodging houses,congregate residences(each accommodating 10 or fewer persons).
S-1 Moderate hazard storage occupancies including buildings or portions of buildings used for storage of combustible
materials not classified as Group S,Division 2 or Group H Occupancies.
S-2 Low-hazard storage occupancies including buildings or portions of buildings used for storage of noncombustible
materials.
S-3 311.1 Repair garages where work is limited to exchange of parts and maintenance not requiring open flame or welding,
and parking garages not classified as Group S,Division 4 Occupancies.
S-4 Open parking garages.
S-5 Aircraft hangars and helistops.
U-1 312.1 Private garages,carports,sheds and agricultural buildings.
U-2 Fences over 6 feet(1829 mm)high,tanks and towers.
tFor detailed descriptions,see the occupancy definitions in the noted sections.
1-33
1997 UNIFORM BUILDING CODE 904.2.3.7
904.4
EXCEPTIONS: 1. Sprinklers are not required for stages 1,000 904.2.7 Group I Occupancies. An automatic sprinkler system
square feet(92.9 m2)or less in area and 50 feet(15 240 mm)or less in shall be installed in Group I Occupancies.In Group I,Division 1.1
height where curtains,scenery or other combustible hangings are not and Group I,Division 2 Occupancies,approved quick-response or
retractable vertically.Combustible hangings shall be limited to a single
main curtain,borders,legs and a single backdrop. residential sprinklers shall be installed throughout patient sleep-
2.Under stage areas less than 4 feet(1219 mm)in clear height used ing areas.
exclusively for chair or table storage and lined on the inside with EXCEPTION: In jails,prisons and reformatories,the piping sys-
5/8-inch(16 mm)Type X gypsum wallboard or an approved equal. tem may be dry,provided a manually operated valve is installed at a
904.23.8 Smoke-protected assembly seating. All areas continuously monitored location.Opening of the valve will cause the
P Y g piping system to be charged.Sprinkler heads in such systems shall be
enclosed with walls and ceilings in buildings or structures con- equipped with fusible el'mots or the system shall be designed as re-
taining smoke-protected assembly seating shall be protected with quired for deluge systems in UBC Standard 9-1.
an approved automatic sprinkler system. 904.2.8 Group M Occupancies. An automatic sprinkler system
EXCEPTION: Press boxes and storage facilities less than 1,000
square feet(92.9 m'-)in area and in conjunction with outdoor seating shall be installed in rooms classed as Group M Occupancies where '
facilities where all means of egress in the seating area are essentially the floor area exceeds 12,000 square feet(1115 m2)on any floor or
open to the outside. 24,000 square feet(2230 m'-)on all floors or in Group M Occupan-
904.2.4 Group E Occupancies. cies more than three stories in height.The area of mezzanines shall
be included in determining the areas where sprinklers are
904.2.4.1 General. An automatic fire sprinkler system shall be required.
installed throughout all buildings containing a Group E,Division 904.2.9 Group R, Division 1 Occupancies. An automatic
1 Occupancy. sprinkler system shall be installed throughout every apartment
EXCEPTIONS: 1. When each room used for instruction has at
' least one exterior exit door at ground level and when rooms used for house three or more stories in height or containing 16 or more
assembly purposes have at least one half of the required exits directly dwelling units,every congregate residence three or more stories in
to the exterior ground level,a sprinkler system need not be provided. height or having an occupant load of 20 or more,and every hotel
2.When area separation walls,or occupancy separations having a three or more stories in height or containing 20 or more guest
fire-resistive rating of not less than two hours subdivide the building rooms.Residential or quick-response standard sprinklers shall be
into separate compartments such that each compartment contains an used in the dwelling units and guest room portions of the building.
aggregate floor area not greater than 20,000 square feet(1858 m'-),an
automatic sprinkler system need not be provided. 904.3 Sprinkler System Monitoring and Alarms.
904.2.4.2 Basements. An automatic sprinkler system shall be 9043.1 Where required. All valves controlling the water sup-
installed in basements classified as Group E,Division 1 Occupan- ply for automatic sprinkler systems and water-flow switches on all
cies. sprinkler systems shall be electrically monitored where the num-
904.2.4.3 Stairs. An automatic sprinkler system shall be in- ber of sprinklers are:
stalled in enclosed usable space below or over a stairway in Group1. Twenty or more in Group I,Divisions 1.1 and 1.2 Occupan-
E,Division 1 Occupancies.See Section 1005.3.3.6. cies.
904.2.5 Group F Occupancies. 2. One hundred or more in all other occupancies.
Valve monitoring and water-flow alarm and trouble signals
904.2.5.1 Woodworking occupancies. An automatic fire sprin- shall be distinctly different and shall be automatically transmitted
kler system shall be installed inGroup F woodworking occupan- to an approved central station,remote station or proprietary moni-
cies over 2,500 square feet(232.3 m2)in area that use equipment, toring station as defined by national standards,or,when approved
machinery or appliances that generate finely divided combustible by the building official with the concurrence of the chief of the fire
waste or that use finely divided combustible materials. department,sound an audible signal at a constantly attended loca-
904.2.6 Group H Occupancies. tion.
EXCEPTION:Underground key or hub valves in roadway boxes
904.2.6.1 General. An automatic fire-extinguishing system provided by the municipality or public utility need not be monitored.
shall be installed in Group H,Divisions 1,2,3 and 7 Occupancies.
9043.2 Alarms. An approved audible sprinkler flow alarm shall
904.2.6.2 Group H, Division 4 Occupancies. An automatic be provided on the exterior of the building in an approved location.
fire-extinguishing system shall be installed in Group H,Division 4 An approved audible sprinkler flow alarm to alert the occupants
Occupancies having a floor area of more than 3,000 square feet shall be provided in the interior of the building in a normally occu-
(279 m'-). pied location.Actuation of the alarm shall be as set forth in UBC
904.2.63 Group H, Division 6 Occupancies. An automatic Standard 9-1.
fire-extinguishing system shall be installed throughout buildings 904.4 Permissible Sprinkler Omissions. Subject to the ap-
containing Group H,Division 6 Occupancies.The design of the proval of the building official and with the concurrence of the
sprinkler system shall not be less than that required under UBC chief of the fire department,sprinklers may be omitted in rooms or
Standard 9-1 for the occupancy hazard classifications as follows: areas as follows:
LOCATION OCCUPANCY HAZARD 1. When sprinklers are considered undesirable because of the
CLASSIFICATION
nature of the contents or in rooms or areas that are of noncombus-
Fabrication areas Ordinary Hazard Group 2 tible construction with wholly noncombustible contents and that
Service corridors Ordinary Hazard Group 2 are not exposed by other areas. Sprinklers shall not be omitted
Storage rooms without dispensing Ordinary Hazard Group 2 from any room merely because it is damp,of fire-resistive con-
Storage rooms with dispensing Extra Hazard Group 2 struction or contains electrical equipment.
' Corridors Ordinary Hazard Group 21 2. Sprinklers shall not be installed when the application of wa-
When the design area of the sprinkler system consists of a corridor protected ter or flame and water to the contents may constitute a serious life
by one row of sprinklers,the maximum number of sprinklers that needs to Y
be calculated is 13. or fire hazard,as in the manufacture or storage of quantities of alu-
1-95
TABLE 3-B
TABLE 3-C 1997 UNIFORM BUILDING CODE
TABLE 3-B—REQUIRED SEPARATION IN BUILDINGS OF MIXED OCCUPANCY1(HOURS)
A-1 A-2 A-2.1 A-3 A-4 B E F-1 _F2 _H2 H-3 H-4,5 H-6,7Z I M R-1 R-3 S-1 S-2 S-3 S-5 U-1
A-1 N N N N 3 N 3 3 4 4 4 4 3 3 1 1 3 3 4 3 l
A-2 N N N 1 N 1 1 4 4 4 4 3 1 1 1 1 1 3 1 1
A-2.1 N N t I N I 1 4 —4 -4 4 3 1 1 1 1 1 3 l 1
' A-3 N N I N I N N 4 4 4 3 2 N 1 1 N N 3 1 l
A-4 I N 1 1 4 4 4 4 3 I 1 1 1 1 3 1 1
' B 1 NS N 2 1 1 1 2 N 1 Ij N N 1 I I
E 1 1 4 4 4 3 1 1 I -1 l I 3 1 1
IF-1 I 2 l 1 I 3 NS 1 I N N t I 1
F-2 2 1 1 1 2 1 I 1 N N 1 1 l
H-1 —
NOT PERMITTED IN MIXED OCCUPANCIES.SEE SECTION 307.2.8
H-2 1 1 24 2 4 4 2 2 2 2 1
H-3 1 l 4 1 3 3 l I 1 1 1
H-4,5 1 4 1 3 3 1 1 1 1 1
H-6,7T 4 1 4 4 1 1 F l 1 3
2 1 1 2 2 4 3 I
M 1 1 la 14 l 1 1
R-1 N 3 1 3 I
R-3 1
l 1 1 1 1
S1 1 1 1 l
S-2 1 l N
S-3 1 I
S-4 OPEN PARKING GARAGES ARE EXCLUDED EXCEPT AS PROVIDED IN SECTION 311.2
S-5 N
N—No requirements for fire resistance.
IFor detailed requirements and exceptions,see Section 302.4. 642-t 30Z.4
217or special provisions on highly toxic materials,see the Fire Code.
3For agricultural buildings,see also Appendix Chapter 3.
4See Section 309.2.2 for exception.
7 5For Group F,Division 1 woodworking establishments with more than 2,500 square feet(232.3 m'-),the occupancy separation shall be one hour.
TABLE 3-C—REQUIRED SEPARATION OF SPECIFIC-USE AREAS IN GROUP I,
DIVISION 1.1 HOSPITAL AND NURSING HOMES
DESCRIPTION OCCUPANCY SEPARATION
1. Employee locker rooms None
2. Gift/retail shops None
3. Handicraft shops None
4. Kitchens None
5. Laboratories that employ hazardous materials in quantities less than
that which would cause classification as a Group H Occupancy One hour
6. Laundries greater than 100 square feet(9.3 m2)1 One hour
7. Paint shops employing hazardous substances and materials in
quantities less than that which would cause classification as a Group H
Occupancy One hour
8. Physical plant maintenance shop One hour
9. Soiled linen room) One hour
10. Storage rooms 100 square feet(9.3 m'-)or less in area storing
combustible material None
11. Storage rooms more than 100 square feet(9.3 m'-)storing combustible
material
One hour
12. Trash-collectiorrioomsi One hour
IFor rubbish and linen chute termination rooms,see Section 711.5.
1-34
1997 UNIFORM BUILDING CODE 301
302.4
Chapter 3
USE OR OCCUPANCY
SECTION 301 -OCCUPANCY CLASSIFIED An occupancy shall not be located above the story or height set
forth in Table 5-13, except as provided in Section 506. When a
Every building, whether existing or hereafter erected, shall be mixed occupancy building contains a Group H,Division 6 Occu-
classified by the building official according to its use or the char- pancy,the portion containin&-tGroup H,Division 6 Occupancy
br
acter of its occupancy,as set forth in Table 3-A, as a building of shall not exceed three stories 55 feet(16 764 mm)in height.
one of the following occupancy groups:
Group A-Assembly (see Section 303.1.1) 302.2 Forms of Occupancy Separations. Occupancy separa-
tions shall be vertical or horiz ntal or both or,when necessary,of
Group B-Business(see Section 304.1) such other form as may be required to afford a complete separa-
Group E-Educational (see Section 305.1) tion between the various occupancy divisions in the building.
Group F-Factory and Industrial(see Section 306.1) Where the occupancy separation is horizontal,structural mem-
bers supporting the separation shall be protected by equivalent
Group H-Hazardous(see Section 307.1) fire-resistive construction.
Group I-Institutional(see Section 308.1) 302.3 Types of Occupancy Separations. Occupancy separa-
Group M-Mercantile (see Section 309.1) tions shall be classed as "four-hour fire-resistive," "three-hour
fire-resistive," "two-hour fire-resistive" and "one-hour fire-
Group R-Residential (see Section 310.1) resistive."
Group Storage(see Section 311.1) 1. A four-hour fire-resistive occupancy separation shall have
Group U-Utility(see Section 312.1) no openings therein and shall not be of less than four-hour fire-
resistive construction.
Any occupancy not mentioned specifically or about which 2. A three-hour fire-resistive occupancy separation shall not
there is any question shall be classified by the building official be of less than three-hour fire-resistive construction.All openings
and included in the group that its use most nearly resembles, in walls forming such separation shall be protected by a fire
based on the existing or proposed fire and life hazard. assembly having a three-hour fire-protection rating. The total
For changes in use,see Section 3405. width of all openings in any three-hour fire-resistive occupancy
separation wall in any one story shall not exceed 25 percent of the
length of the wall in that story and no sin le opening shall have an
SECTION 302- MIXED USE OR OCCUPANCY area greater than 120 square feet(11 m2).
302.1 General. When a building is used for more than one occu- All openings in floors forming a three-hour fire-resistive occu-
pancy purpose, each part of the building comprising a distinct pancy separation shall be protected by shaft, stairway, ramp or
"occupancy," as described in Section 301, shall be separated escalator enclosures extending above and below such openings.
from any other occupancy as specified in Section 302.4. The walls of such enclosures shall not be of less than two-hour
EXCEPTIONS:1.When an approved spray booth constructed in
fire-resistive construction and all openings therein shall be pro-
accordance with the Fire Code is installed,such booth need not be sep-
tected by a fire assembly having a one- and one-half-hour fire-
arated from Group B,F,H,M or S Occupancies. protection rating.
2.The following occupancies need not be separated from the uses EXCEPTION:When the walls of such enclosure extending below t
to which they are accessory: the three-hour fire-resistive occupancy separation to the foundation
2.1 Assembly rooms having a floor area of not over 750 square are provided with a fire-resistive rating of not less than three hours with
feet(69.7 m'-). openings therein protected as required for walls forming three-hour
occupancy separations,the enclosure walls extending above such floor
2.2 Administrative and clerical offices and similar rooms that used as the three-hour fire-resistive occupancy separation may have a
do not exceed 25 percent of the floor area of the major use one-hour fire-resistive rating,provided:
when not related to Group H,Division 2 and Group H,Divi-
sion 3 Occupancies. 1. The occupancy above is not required to be of Type I or If fire-
2.3 Gift shops, administrative offices and similar rooms in resistive construction,and
Group R,Division 1 Occupancies not exceeding 10 percent 2• The enclosure walls do not enclose an exit stairway,a ramp or an
of the floor area of the major use. escalator required to have enclosure walls of not less than two-hour
2.4 The kitchen serving the dining area of which it is a part. fire-resistive construction.
2.5 Customer waiting rooms not exceeding 450 square feet 3. A two-hour fire-resistive occupancy separation shall not be
(41.8 m'-)when not related to Group H Occupancies and of less than two-hour fire-resistive construction. All openings in
when such waiting rooms have an exit directly to the Such separation shall be protected by a fire assembly having a
exterior. one-and one-half-hour fire-protection rating.
3.An occupancy separation need not be provided between a Group 4. A one-hour fire-resistive occupancy separation shall not be
R,Division 3 Occupancy and a carport having no enclosed uses above, of less than one-hour fire-resistive construction. All openings in
provided the carport is entirely open on two or more sides. such separation shall be protected by a fire assembly having a
4.A Group S,Division 3 Occupancy used exclusively for the park- one-hour fire-protection rating.
ing or storage of private or pleasure-type motor vehicles need not be
separated from a Group S,Division 4 Occupancy open parking garage 302.4 Fire Ratings for Occupancy Separations. Occupancy
as defined in Section 311.1. separations shall be provided between the various groups and di-
When a building houses more than one occup: ncy, each por- visions of occupancies as set forth in Table 3-13.For required sep-
tion of the building shall conform to the requirements for the oc- aration of specific uses in Group I, Division 1 hospitals and
cupancy housed therein. nursing homes,see Table 3-C. See also Section 504.6.1.
1-13
1003.2.2.2.3 1997 UNIFORM BUILDING CODE
1003.2.8.2
1003.2.2.2.3 Areas with fixed seats. For areas having fixed 1003.2.3.3 Maintaining width.If the minimum required width
seats,the occupant load for such areas shall be determined by the of the means of egress system increases along the path of exit trav-
number of fixed seats installed therein. el based on cumulative occupant loads served, such width shall
For areas having fixed benches or pews,the occupant load shall not be reduced or otherwise diminished to less than the largest
not be less than the number of seats based on one person for each minimum width required to that point along the path of exit travel.
18 inches(457 mm)of length of pew or bench.Where fixed booths EXCEPTION:In other than Group H,Divisions 1,2,3 and 7 Occu-
are used in dining areas,the occupant load shall be based on one panties,the width of exterior exit doors from an exit enclosure may be
person for each 24 inches(610 mm)of booth length.Where fixed based on the largest occupant load of all levels served by such exit en-
benches, pews or booths are curved,the larger radius shall deter- closure multiplied by a factor of 0.2(5.08).
mine the booth length. 1003.2.3.4 Exiting from adjacent levels.No cumulative or con-
tributing occupant loads from adjacent building levels need be
1003.2.2.2.4 Outdoor areas.The occupant load of yards,patios, considered when determining the required width of means of
courts and similar outdoor areas shall be assigned by the building egress components from a give%level.
official in accordance with their anticipated use. Such outdoor Where an exit enclosure from an upper floor and a lower floor
areas accessible to and usable by the building occupants shall be converge at an intermediate floor, the width of the exit from the
provided with a means of egress as required by this chapter.Where intermediate floor shall be based on the sum of the occupant loads
an outdoor area exits only through a building,the occupant load of of such upper and lower floors.
such outdoor area shall be considered in the design of the means of
egress system of that building. 1003.2.3.5 Two-way exits.Where exit or exit-access doorways
serve paths of exit travel from opposite directions, the width of
1003.2.2.2.5 Reviewing stands, grandstands and bleachers. such exit or exit-access doorways shall be based on the largest oc-
The occupant load for reviewing stands,grandstands and bleach- cupant load served.Where such exit or exit-access doorways are
ers shall be calculated in accordance with Section 1003.2.2.2 and required to swing in the direction of exit travel by Section
the specific requirements contained in Section 1008. 1003.3.1.5, separate exit width for each path of exit travel shall be
1003.2.2.3 Maximum occupant load.
provided based on the occupant load of the area that is served.
1003.2.4 Height.Except as specified elsewhere in this chapter,
1003.2.2.3.1 Assembly occupancies. The maximum occupant the means of egress system shall have a clear height of not less
load for an assembly occupancy shall not exceed the occupant than 7 feet(2134 mm)measured vertically from the walking sur-
load determined in accordance with Section 1003.2.2.2. face to the lowest projection from the ceiling or overhead struc-
EXCEPTION:When approved by the building official,the occu- ture.
pant load for an assembly occupancy may be increased,provided the EXCEPTION: Sloped ceilings permitted by Section 310.6.1.
maximum occupant load served does not exceed the capacity of the 1003.2.5 Exit continuity.The path of exit travel along a means of
means of egress system for such increased number of occupants. egress shall not be interrupted by any building element other than
For temporary increases of occupant loads in places of assem- a means of egress component as specified in this chapter.Obstruc-
bly,see the Fire Code. tions shall not be placed in the required width of a means of egress
1003.2.2.3.2 Other occupancies.For other than assembly occu- except projections permitted by this chapter.The required capac-
pancies,an occupant load greater than that determined in accord- ity of a means of egress system shall not be diminished along the
ante with Section 1003.2.2.2 is permitted;however,the means of Path of exit travel.
egress system shall comply with the requirements of this chapter 1003.2.6 Changes in elevation. All exterior elevation changes
for such increased occupant load. and interior elevation changes of 12 inches (305 mm) or more
along the path of exit travel shall be made by steps,stairs or stair-
1003.2.2.4 Minimum occupant load. An occupant load less ways conforming with the requirements of Section 1003.3.3.3 or
than that determined in accordance with Section 1003.2.2.2 shall ramps conforming with the requirements of Section 1003.3.4.
not be used.
Interior elevation changes of less than 12 inches (305 mm)
1003.2.2.5 Revised occupant load.No increase in occupant load along the path of exit travel serving an occupant load of 10 or more
shall be made to any existing building or structure unless the shall be by ramps conforming with the requirements of Section
means of egress system is made to comply with the requirements 1003.3.4.
of this chapter for such increased occupant load.See Section 3405. EXCEPTIONS: 1.In Group R,Division 3 Occupancies and within
individual dwelling units of Group R,Division l Occupancies.
1003.2.3 Width. 2.Along aisles adjoining seating areas.
1003.2.3.1 General.The width of the means of egress system or 1003.2.7 Elevators or escalators. Elevators or escalators shall
any portion thereof shall be based on the occupant load served. not be used as a required means of egress component.
1003.2.3.2 Minimum width.The width,in inches(mm),of any 1003.2.8 Means of egress identification.
component in the means of egress system shall not be less than the 1003.2.8.1 General. For the purposes of Section 1003.2.8, the
product determined by multiplying the total occupant load served term"exit sign"shall mean those required signs that indicate the
by such component by the applicable factor set forth in Table path of exit travel within the means of egress system.
10-B.In no case shall the width of an individual means of egress 1003.2.8.2 Where required.The path of exit travel to and within
component be less than the minimum required for such compo- exits in a building shall be identified by exit signs conforming to
compo-
nent as specified elsewhere in this chapter.
the requirements of Section 1003.2.8. Exit signs shall be readily
Where more than one exit or exit-access doorway serves a visible from any direction of approach.Exit signs shall be located
building or portion thereof,such calculated width shall be divided as necessary to clearly indicate the direction of egress travel.No
approximately equally among the means of egress components point shall be more than 100 feet(30 480 mm) from the nearest
serving as exits or exit-access doorways for that area. visible sign.
1-106
1997 UNIFORM BUILDING CODE 1003.2.8.2
1003.3.1.2
EXCEPTIONS: 1. Main exterior exit doors that obviously and the means of egress system shall comply with the requirements of
clearly are identifiable as exit doors need not have exit signs when this section. These means of egress components may be selec-
approved by the building official. tively included in the exit access,the exit or the exit discharge por-
t.Rooms or areas that require only one exit or exit access. tions of the means of egress system.
3.In Group R,Division 3 Occupancies and within individual units
of Group R,Division 1 Occupancies. 1003.3.1 Doors.
4.Exits or exit access from rooms or areas with an occupant load of 1003.3.1.1 General. For the purposes of Section 1003.3.1, the
less than 50 where located within a Group I,Division 1.1, 1.2 or 2
Occupancy or a Group E,Division 3 day-care occupancy. term"exit door"shall mean all of those doors or doorways along
the path of exit travel anywhere in a means of egress system.
1003.2.83 Graphics.The color and design of lettering,arrows f
and other symbols on exit signs shall be in high contrast with their Exit doors serving the means of egress system shall comply
background.Exit signs shall have the word"EXIT"on the sign in with the requirements of Section 1003.3.1. Where additional
block capital letters not less than 6 inches(152 mm)in height with doors are installed for egress purposes,they shall conform to all
a stroke of not less than 3/4 inch(19 mm).The word"EXIT"shall requirements of this section.OBuildings or structures used for
have letters having a width of not less than 2 inches (51 mm) human occupancy shall have at least one exterior exit door that
except for the letter"I"and a minimum spacing between letters of meets the requirements of Section 1003.3.1.3.
not less than 3/8 inch(9.5 mm).Signs with lettering larger than the Exit doors shall be readily distinguishable from the adjacent
minimum dimensions established herein shall have the letter construction and shall be easily recognizable as exit doors.Mir-
width,stroke and spacing in proportion to their height. rors or similar reflecting materials shall not be used on exit doors,
1003.2.8.4 Illumination.Exit signs shall be internally or exter- and exit doors shall not be concealed by curtains,drapes,decora-
nally illuminated. When the face of an exit sign is illuminated tions and similar materials.
from an external source,it shall have an intensity of not less than 1003.3.1.2 Special doors. Revolving, sliding and overhead
5 footcandles(54 lx)from either of two electric lamps.Internally doors serving an occupant load of 10 or more shall not be used as
illuminated signs shall provide equivalent luminance and be listed required exit doors.
for the purpose. EXCEPTIONS: 1.Approved revolving doors having leaves that
EXCEPTION:Approved self-luminous signs that provide evenly will collapse under opposing pressures may be used,provided
illuminated letters that have a minimum luminance of 0.06 foot lambert 1.1 Such doors have a minimum width of 6 feet 6 inches(1981
(0.21 cd/m'-). mm).
1003.2.8.5 Power source.All exit signs shall be illuminated at 1.2 At least one conforming exit door is located adjacent to
all times.To ensure continued illumination for a duration of not each revolving door.
less than 11/2 hours in case of primary power loss,the exit signs 1.3 The revolving door shall not be considered to provide any
shall also be connected to an emergency electrical system pro- required width when computing means of egress width in
vided from storage batteries,unit equipment or an on-site genera- accordance with Section 1003.2.3.
for set, and the system shall be installed in accordance with the 2•Horizontal sliding doors complying with UBC Standard 7-8 may
Electrical Code.For high-rise buildings,see Section 403. be used2.1 In elevator lobby separations.
EXCEPTION:Approved self-luminous signs that provide contin- 2.2 In other than Groups A and H Occupancies,where smoke
uous illumination independent of an external power source. barriers are required.
1003.2.9 Means of egress illumination. 2.3 In other than Group H Occupancies,where serving an occu-
pant load of less than 50.
1003.2.9.1 General.Any time a building is occupied,the means Power-operated doors complying with UBC Standard 10-1 may
of egress shall be illuminated at an intensity of not less than 1 foot- be used for egress purposes. Such doors,where swinging, shall
candle(10.76 Ix)at the floor level. have two guide rails installed on the swing side projecting out
EXCEPTIONS:1.In Group R,Division 3 Occupancies and within from the face of the door jambs for a distance not less than the wid-
individual units of Group R,Division 1 Occupancies. est door leaf.Guide rails shall not be less than 30 inches(762 mm)
2. In auditoriums, theaters, concert or opera halls, and similar in height with solid or mesh panels to prevent penetration into
assembly uses,the illumination at the floor level may be reduced dur- door swing and shall be capable of resisting a horizontal load at top
ing performances to not less than 0.2 footcandle(2.15 Ix),provided that of rail of not less than 50 pounds per lineal foot(730 N/m).
the required illumination be automatically restored upon activation of
a premise's fire alarm system when such system is provided. EXCEPTIONS:1.Walls or other types of separators may be used
in lieu of the above guide rail,provided all the criteria are met.
1003.2.9.2 Power supply.The power supply for means of egress 2.Guide rails in industrial or commercial occupancies not accessi-
illumination shall normally be provided by the premises' electri- ble to the public may comply with the exception to Section 509.3.
cal supply. In the event of its failure, illumination shall be auto- 3. Doors swinging toward flow of traffic shall not be permitted
matically provided from an emergency system for Group I, unless actuating devices start to function at least 8 feet 11 inches(2718
Divisions 1.1 and 1.2 Occupancies and for all other occupancies mm)beyond the door in an open position and guide rails extend 6 feet
where the means of egress system serves an occupant load of 100 5 inches(1956 mm)beyond the door in an open position.
or more.Such emergency systems shall be installed in accordance Clearances for guide rails shall be as follows:
with the Electrical Code.
1. Six inches (152 mm) maximum between rails and leading
For high-rise buildings,see Section 403. edge of door at the closest point in its arc of travel.
1003.2.10 Building accessibility.In addition to the requirements 2.Six inches(152 mm)maximum between rails and the door in
of this chapter,means of egress,which provide access to,or egress an open position.
from, buildings for persons with disabilities, shall also comply 3.Two inches(51 mm)minimum between rail at hinge side and
with the requirements of Chapter 11. door in an open position.
10033 Means of egress components. Doors, gates, stairways 4.Two inches (51 mm)maximum between freestanding rails
and ramps that are incorporated into the design of any portion of and jamb or other adjacent surface.
1-107
1997 UNIFORM BUILDING CODE 1003.3.1.10
1003.3.3.6
3. The egress-control device shall be capable of being deacti- 1003.3.3.3 Rise and run.The rise of steps and stairs shall not be
vated by a signal from a switch located in an approved location. less than 4 inches(102 mm)nor more than 7 inches(178 mm).The
4. An irreversible process that will deactivate the egress-con-
greatest riser height within any flight of stairs shall not exceed the
smallest by more than
trol device shall be initiated whenever a manual force of not more /$inch(9.5 mm).Except. permitted in
than 15 pounds(66.72 N)is applied for two seconds to the panic Sections 1003.3.3.8.1, 1003.3.3.8.2 and 1003.3.33.8.3, the run
bar or other door-latching hardware. The egress-control device shall not be less than I1 inches(279 mm)as measured horizontally
shall deactivate within an approved time period not to exceed a between the vertical planes of the furthermost projection of adja-
total of 15 seconds. The time delay established for each egress- cent treads or nosings. Stair treads shall be of uniform size and
control device shall not tfield adjustable. shape,except the largest tread run within any flight of stairs shall
not exceed the smallest by tri*than 3/g inch(9.5 mm).
5. Actuation of the panic bar or other door-latching hardware EXCEPTIONS: 1.Private steps and stairways serving an occupant
shall activate an audible signal at the door. load of less than 10 and stairways to unoccupied roofs may be
constructed with an 8-inch- aximum (203 mm) rise and a 9-inch-
6. The unlatching shall not require more than one operation. minimum(229 mm)run.
A sign shall be provided on the door located above and within 2.Where the bottom or top riser adjoins a sloping public way,walk
12 inches(305 mm)of the panic bar or other door-latching hard- or driveway having an established grade(other than natural earth)and
ware reading: serving as a landing,the bottom or top riser may be reduced along the
slope to less than 4 inches(102 mm)in height with the variation in
KEEP PUSHING.THIS DOOR WILL OPEN IN height of the bottom or top riser not to exceed 1 unit vertical in 12 units
SECONDS.ALARM WILL SOUND. horizontal(8.3%slope)of stairway width.
Sign lettering shall be at least 1 inch(25 mm)in height and shall 1003.3.3.4 Headroom. Every stairway shall have a headroom
have a stroke of not less than 1/8 inch(3.2 mm). clearance of not less than 6 feet 8 inches(2032 mm).Such clear-
ances shall be measured vertically from a plane parallel and tan-
Regardless of the means of deactivation, relocking of the gent to the stairway tread nosings to the soffit or other construction
egress-control device shall be by manual means only at the door. above at all points.
1003.3.1.11 Safety glazing identification. Regardless of the 1003.3.3.5 Landings.There shall be a floor or a landing at the top
occupant load served, glass doors shall conform to the require- and bottom of each stairway or stair run.Every landing shall have
ments specified in Section 2406. a dimension measured in the direction of travel not less than the
width of the stairway.Such dimension need not exceed 44 inches
1003.3.2 Gates. (1118 mm)where the stair has a straight run. At least one inter-
mediate landing shall be provided for each 12 feet(3658 mm)of
1003.3.2.1 General. Gates serving a means of egress system vertical stairway rise measured between the horizontal planes of
shall comply with the requirements of Section 1003.3.2. adjacent landings. Landings shall be level except that exterior
1003.3.2.2 Detailed requirements.Gates used as a component landings may have a slope not to exceed 1/4 unit vertical in 12 units
in a means of egress system shall conform to the applicable horizontal(2%slope).For landings with adjoining doors,see Sec-
tion 1003.3.1.7.
requirements of Section 1003.3.1.
EXCEPTIONS: 1.In Group R,Division 3,and Group U Occupan-
EXCEPTION:Gates surrounding stadiums may be of the horizon- cies and within individual units of Group R,Division I Occupancies,
tal sliding or swinging type and may exceed the 4-foot(1219 mm)max- such length need not exceed 36 inches(914 mm)where the stair has a
imum leaf width limitation. straight run.
1003.3.3 Stairways. 2.Stairs serving an unoccupied roof are exempt,from these require-
ments.
1003.3.3.1 General. Every stairway having two or more risers 1003.3.3.6 Handrails. Stairways shall have handrails on each
serving any building or portion thereof shall comply with the side,and every stairway required to be more than 88 inches(2235
requirements of Section 1003.3.3. For the purposes of Section mm)in width shall be provided with not less than one intermediate
1003.3.3,the term"stairway"shall include stairs,landings,hand- handrail for each 88 inches(2235 mm)of required width.Inter-
rails and guardrails as applicable.Where aisles in assembly rooms mediate handrails shall be spaced approximately equally across
have steps, they shall comply with the requirements in Section with the entire width of the stairway.
1004.3.2. EXCEPTIONS: 1. Stairways less than 44 inches (1118 mm) in
EXCEPTION:Stairs or ladders used only to attend equipment or width or stairways serving one individual dwelling unit in Group R,
window wells are exempt from the requirements of this section. Division I or 3 Occupancy or a Group R,Division 3 congregate resi-
For the purpose of this chapter,the term"step"shall mean those dence may have one handrail.
portions of the means of egress achieving2.Private stairways 30 inches(76_'
mm)or less in height may have
a change in elevation by a handrail on one side only.
means of a single riser. Individual steps shall comply with the 3.Stairways having less than four risers and serving one individual
detailed requirements of this chapter that specify applicability to dwelling unit in Group R,Division I or 3,or a Group R,Division 3 con-
steps. gregate residence or Group U Occupancies need not have handrails.
1003.3.3.2 Width.The width of stairways shall be determined as The top of handrails and handrail extensions shall not be placed
specified in Section 1003.2.3,but such width shall not be less than less than 34 inches(864 mm)nor more than 38 inches(965 mm)
44 inches(1118 mm),except as specified herein and in Chapter 11. above landings and the nosi.:g of treads.Handrails shall be contin-
Stairways serving an occupant load less than 50 shall not be less uous the full length of the stairs and at least one handrail shall
than 36 inches(914 mm)in width. extend in the direction of the stair run not less than 12 inches 365
mm eyon t e to riser nor less than 12 inches m e
myond
Handrails may project into the required width a distance of the b om riser.Ends shall be return— e-3 or shah have rounded ter-
31/2 inches (89jnm) from each side of a stairwa,:. Stringers and minations or bends.
other projections such as trim and similar decorative features may EXCEPTIONS:1.Private stairways do not require handrail exten-
project into the required width 11/2 inches(38 mr +from each side. sions.
1-109
1003.3.3.6 1997 UNIFORM BUILDING CODE
1003.3.4.4
2.Handrails may have starting or volute newels within the first tread EXCEPTIONS:1.Group R.Division 3 Occupancies.
on stairways in Group R,Division 3 Occupancies and within individual 2.Protection of exterior wall openings is not required where the
dwelling units of Group R,Division 1 Occupancies. exterior openings in the interior stairway are protected by fixed or self-
The handgrip portion of handrails shall not be less than closing fire assemblies having a three-fourths-hour fire-protection
11/4 inches (32 mm) nor more than 2 inches (51 mm)in cross- rating-
sectional dimension or the shape shall provide an equivalent grip- 3.Protection of openings is not required for open parking garages
ping surface. The handgrip portion of handrails shall have a conforming to Section 405.
smooth surface with no sharp comers.Handrails projecting from a 1003.3.3.11 Stairway to roof.In buildings four or more stories in
wall shall have a space of not less than 11/2 inches (38 mm) height, one stairway shall exte4,to the roof surface,unless the
between the wall and the handrail. roof has a slope steeper than 4 units vertical in 12 units horizontal
10033.3.7 Guardrails.Stairways open on one or both sides shall (33%slope).
have guardrails as required by Section 509. 1003.3.3.12 Roof hatches. All )required interior stairways that
extend to the top floor in any building four or more stories in
10033.3.8 Alternative stairways. height shall have, at the highest point of the stair shaft, an
approved hatch openable to the exterior not less than 16 square
10033.3.8.1 Circular stairways. Circular stairways conform- feet(1.5 m2)in area and having a minimum dimension of 2 feet
ing to the requirements of this section may be used as a means of (610 mm).
egress component in any occupancy.The minimum width of run
shall not be less than 10 inches(254 mm)and the smaller stairway EXCEPTION:A roof hatch need not be provided on pressurized
radius shall not be less than twice the width of the stairway. enclosures or on stairways that extend to the roof with an opening onto
that roof.
100333.8.2 Winding stairways.In Group R,Division 3 Occu- 1003.3.3.13 Stairway identification. Stairway identification F
panties and in private stairways in Group R,Division 1 Occupan- signs shall be located at each floor level in all enclosed stairways F
cies,winding stairways may be used if the required width of run is in buildings four or more stories in height.Such signs shall iden- F
provided at a point not more than 12 inches(305 mm)from the tify the stairway,indicate whether or not there is roof access,the F
side of the stairway where the treads are narrower,but in no case floor level,and the upper and lower terminus of the stairway.The F
shall the width of run be less than 6 inches(152 mm)at any point. sign shall be located approximately 5 feet(1524 mm)above the F
landing floor in a position that is readily visible when the door is in F
10033.3.8.3 Spiral stairways.In Group R,Division 3 Occupan- either the open or closed position. Signs shall comply with F
cies and in private stairways within individual units of Group R, requirements of UBC Standard 10-2. F
Division 1 Occupancies,spiral stairways may be installed.A spi-
ral stairway is a stairway having a closed circular form in its plan 1003.3.4 Ramps.
view with uniform section shaped treads attached to and radiating 1003.3.4.1 General.Ramps used as a component in a means of
about a minimum diameter supporting column. Such stairways egress system shall conform to the requirements of Section
may be used as a required means of egress component where the 1003.3.4.
area served is limited to 400 square feet(37.16 m2).
EXCEPTION:Ramped aisles within assembly rooms shall con-
The tread shall provide a clear walking area measuring at least form to the requirements in Section 1004.3.2.
26 inches(660 mm)from the outer edge of the supporting column 1003.3.4.2 Width.The width of ramps shall be determined as
to the inner edge of the handrail.The effective tread is delineated specified in Section 1003.2.3,but shall not be less than 44 inches
by the nosing radius line,the exterior arc(inner edge of railing)
and the overlap radius line (nosing radius line of tread above). serving
mm),except as specified herein and in Chapter 11.Ramps
s
Effective tread dimensions are taken along a line perpendicular to servingoccupant load of less than 50 shall not be less than
the center line of the tread.A run of at least 71/2 inches(191 mm) 36 inchess(914 mm)in width.
shall be provided at a point 12 inches(305 mm)from where the Handrails may project into the required width a distance of
tread is the narrowest. The rise shall be sufficient to provide a 31/2 inches(89 mm)from each side of a ramp.Other projections,
headroom clearance of not less than 6 feet 6 inches(1981 mm); such as trim and similar decorative features,may project into the
however,such rise shall not exceed 91/2 inches(241 mm). required width 11/2 inches(38 mm)from each side.
100333.9 Interior stairway construction. Interior stairways 1003.3.4.3 Slope.The slope of ramps required by Chapter 11 that
shall be constructed based on type of construction requirements as are located within an accessible route of travel shall not be steeper
specified in Sections 602.4,603.4,604.4,605.4 and 606.4. than 1 unit vertical in 12 units horizontal(8.3%slope).The slope
of other ramps shall not be steeper than 1 unit vertical in 8 units
Except where enclosed usable space under stairs is prohibited horizontal(12.5%slope).
by Section 1005.3.3.6,the walls and soffits of such enclosed space
shall be protected on the enclosed side as required for one-hour 1003.3.4.4 Landings.Ramps having slopes steeper than 1 unit
fire-resistive construction. vertical in 20 units horizontal(5%slope)shall have landings at the
Stairways exiting directly to the exterior of a building four or top and bottom,and at least one intermediate landing shall be pro-
more stories in height shall be provided with a means for emer- vided for each 5 feet(1524 mm)of vertical rise measured between
gency entry for fire department access.(See the Fire Code.) the horizontal planes of adjacent landings.Top landings and inter-
mediate landings shall have a dimension measured in the direction
1003.3.3.10 Protection of exterior wall openings.All openings of ramp run of not less than 5 feet(1524 mm).Landings at the bot-
in the exterior wall below and within 10 feet(3048 mm),measured tom of ramps shall have a dimension in the direction of ramp run of
horizontally, of openings in an interior exit stairway serving a not less than 6 feet(1829 mm).
building over two.stories in height or a floor level having such Doors in any position shall not reduce the minimum dimension
openings in two or more floors below,shall be protected by fixed of the landing to less than 42 inches (1067 mm) and shall not
or self-closing fire assemblies having a three-fourths-hour fire- reduce the required width by more than 7 inches(178 mm)when
protection rating.See Section 1006.3.3.1. fully open.
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CHAPTER 1306
DEPARTMENT OF ADMINISTRATION
MINNESOTA STATE BUILDING CODE
SPECIAL FIRE PROTECTION SYSTEMS
1306.0100 SPECIAL FIRE PROTECTION SYSTEMS (OPTIONAL).
1306.0100 SPECIAL FIRE PROTECTION SYSTEMS (OPTIONAL).
Subpart 1. General. This part authorizes optional
provisions for the installation of on-premises fire subpression
systems in new buildings, buildings increased in floor area, and
buildings which have the occupancy classification changed.
Subp. 2. Municipal option. The sprinkler system
requirements in subpart 3 may be adopted with the selection of
either item "8" or item "8a" based on local fire suppression
capabilities, but without further change by a municipality which
has adopted the code. When adopted, the requirements are
applicable throughout the municipality for new buildings,
buildings increased in floor area, and buildings which will have
the occupancy classification changed.
Subp. 3. Requirements. Automatic sprinkler systems must
be installed and maintained in operable condition in buildings
in the occupancy classifications listed in items 1 through 11.
For purposes of this chapter, area separation walls do not
establish separate buildings. The square footage requirements
stated in the following items establish the threshold where the
provisions apply; in the case of mixed occupancies the threshold
number of the most restrictive occupancy applies to the entire
building, except for minor additions that do not increase the
occupant load or significantly increase the fire load.
1. Group A-1 occupancies.
2. Group A-2 occupancies with an occupant load of 300 or
more.
3. Group A-2.1 occupancies.
4. Group A-3 occupancies with an accumulative occupant
load of 300 or more.
5. Group S-3 service stations with 3,000 or more gross
square feet of floor area, not including canopies.
6. Group S-3 parking garages with 5,000 or more gross
square feet of floor area.
7. Group B offices and postsecondary classrooms with 8,500
or more gross feet of floor area or three or more stories in
height.
8. Group M mercantile, S storage, or F factory occupancies
with 2,000 or more gross square feet of floor area or three or
more stories in height.
8a. Group M mercantile, S storage, or F factory
occupancies with 5,000 or more gross square feet of floor area
or three or more stories in height.
9. Group E-1 and E-2 occupancies with 8,500 or more gross
147
CHAPTER 1306
DEPARTMENT OF ADMINISTRATION
MINNESOTA STATE BUILDING CODE
SPECIAL FIRE PROTECTION SYSTEMS
1306.0100 SPECIAL FIRE PROTECTION SYSTEMS (OPTIONAL),
1306.0100 SPECIAL FIRE PROTECTION SYSTEMS (OPTIONAL).
Subpart 1. General. This part authorizes optional
provisions for the installation of on-premises fire suppression
systems in new buildings, buildings increased in floor area, and
buildings which have the occupancy classification changed.
Subp. 2. Municipal option. The sprinkler system
requirements in subpart 3 may be adopted with the selection of
either item "8" or item "8a" based on local fire suppression
capabilities, but without further change by a municipality which
has adopted the code. When adopted, the requirements are
applicable throughout the municipality for new buildings,
buildings increased in floor area, and buildings which will have
the occupancy classification changed.
Subp. 3. Requirements. Automatic sprinkler systems must
be installed and maintained in operable condition in buildings
in the occupancy classifications listed in items l through 11.
For purposes of this chapter, area separation walls do not
establish separate buildings. The square footage requirements
stated in the following items establish the threshold where the
provisions apply; in the case of mixed occupancies the threshold
number of the most restrictive occupancy applies to the entire
building, except for minor additions that do not increase the
occupant load or significantly increase the fire load.
1. Group A-1 occupancies.
2. Group A-2 occupancies with an occupant load of 300 or
more.
3. Group A-2.1 occupancies.
4. Group A-3 occupancies with an accumulative occupant
load of 300 or more.
5. Group S-3 service stations with 3,000 or more gross
square feet of floor area, not including canopies.
6. Group S-3 parking garages with 5,000 or more gross
square feet of floor area.
7. Group B offices and postsecondary classrooms with 8,500
or more gross feet of floor area or three or more stories in
height.
8. Group M mercantile, S storage, or F factory occupancies
with 2,000 or more gross square feet of floor area or three or
more stories in height.
8a. Group M mercantile, S storage, or F factory
occupancies with 5,000 or more gross square feet of floor area
or three or more stories in height.
9. Group E-1 and E-2 occupancies with 8,500 or more gross
147
+ 1997 UNIFORM BUILDING CODE 106.2
106.4.1
9. Temporary motion picture,television and theater.stage sets Plans for buildings of other than Group R,Division 3 and Group '
and scenery. U Occupancies shall indicate how required structural and fire-
10. Window awnings supported by an exterior wall of Group R, resistive integrity will be maintained where penetrations will be
Division 3,and Group U Occupancies when projecting not more made for electrical, mechanical, plumbing and communication
conduits,pipes and similar systems.
than 54 inches(1372 mm).
11. Prefabricated swimming pools accessory to a Group R,Di- 1063.4 Architect or engineer of record.
vision 3 Occupancy in which the pool walls are entirely above the 1063.4.1 General. When it is required that documents be pre-
adjacent grade and if the capacity does not exceed 5,000 gallons pared by an architect or engineer,the building official may require
(18 927 L). the owner to engage and des-igp ate on the building permit applica-
Unless otherwise exempted,separate plumbing,electrical and tion an architect or engineer Ao shall act as the architect or engi-
mechanical permits will be required for the above-exempted neer of record. If the circumstances require, the owner may
items. designate a substitute architect or engineer of record who shall
perform all of the duties requited of the original architect or engi-
Exemption from the permit requirements of this code shall not neer of record.The building official shall be notified in writing by
be deemed to grant authorization for any work to be done in any the owner if the architect or engineer of record is changed or is un-
manner in violation of the provisions of this code or any other laws able to continue to perform the duties.
or ordinances of this jurisdiction. The architect or engineer of record shall be responsible for re-
1063 Application for Permit. viewing and coordinating all submittal documents prepared by
others,including deferred submittal items,for compatibility with
1063.1 Application. To obtain a permit,the applicant shall first the design of the building.
file an application therefor in writing on a form furnished by the 106.3.4.2 Deferred submittals. For the purposes of this section,
code enforcement agency for that purpose.Every such application deferred submittals are defined as those portions of the design that
shall: are not submitted at the time of the application and that are to be
1. Identify and describe the work to be covered by the permit submitted to the building official within a specified period.
for which application is made. Deferral of any submittal items shall have prior approval of the
2. Describe the land on which the proposed work is to be done building official.The architect or engineer of record shall list the
by legal description,street address or similar description that will deferred submittals on the plans and shall submit the deferred sub-
readily identify and definitely locate the proposed building or mittal documents for review by the building official.
work. Submittal documents for deferred submittal items shall be sub-
3. Indicate the use or occupancy for which the proposed work is mitted to the architect or engineer of record who shall review them
intended. and forward them to the building official with a notation indicat-
ing that the deferred submittal documents have been reviewed and
4. Be accompanied by plans, diagrams, computations and that they have been found to be in general conformance with the
specifications and other data as required in Section 106.3.2. design of the building.The deferred submittal items shall not be
5. State the valuation of any new building or structure or any installed until their design and submittal documents have been ap-
addition,remodeling or alteration to an existing building. proved by the building official.
6. Be signed by the applicant, or the applicant's authorized 106.3.5 Inspection and observation program. When special
agent. inspection is required by Section 1701,the architect or engineer of
7.Give such other data and information as may be required by record shall prepare an inspection program that shall be submitted
the building official. to the building
g official for approval prior to issuance of the build-
ing permit.The inspection program shall designate the portions of
1063.2 Submittal documents. Plans,specifications,engineer- the work that require special inspection and the name or names of
ing calculations, diagrams,soil investigation reports,special in- the individuals or firms who are to perform the special inspec-
spection and structural observation programs and other data shall tions,and indicate the duties of the special inspectors.
constitute the submittal documents and shall be submitted in one The special inspector shall be employed by the owner,the engi-
or more sets with each application for a permit.When such plans neer or architect of record,or an agent of the owner,but not the
are not prepared by an architect or engineer,the building official contractor or any other person responsible for the work.
may require the applicant submitting such plans or other data to When structural observation is required by Section 1702,the in-
demonstrate that state law does not require that the plans be pre- spection program shall name the individuals or firms who are to
pared by a licensed architect or engineer. The building official perform structural observation and describe the stages of
may require plans,computations and specifications to be prepared construction at which structural observation is to occur.
and designed by an engineer or architect licensed by the state to
The inspection program shall include samples of inspection re-
practice as such even if not required by state law.
ports and provide time limits for submission of reports.
EXCEPTION:The building official may waive the submission of
plans, calculations, construction inspection requirements and other 106.4 Permits Issuance.
data if it is found that the nature of the work applied for is such that re-
viewing of plans is not necessary to obtain compliance with this code. 106.4.1 Issuance. The application, plans, specifications, com-
putations and other data filed by an applicant for a permit shall be
106.33 Information on plans and specifications. Plans and reviewed by the building official.Such plans may be reviewed by
specifications shall be drawn to scale upon substantial paper or other departments of this jurisdiction to verify compliance with
cloth and shall be of sufficient clarity to indicate the location,na- any applicable laws under their jurisdiction.If the building official
ture and extent of the work proposed and show in detail that it will finds that the work described in an application for a permit and the
conform to the provisions of this code and all relevant laws,ordi- plans,specifications and other data filed therewith conform to the
nances,rules and regulations. requirements of this code and other pertinent laws and ordinances,
1-3