HomeMy WebLinkAboutRegarding roof drains 05/15/O1 TUE 05:42 FAX f�001
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MEMORANDUIVI
Aate: 14 May 2(1(11
To: Lyle Oman
�uilding O#ficial
Post Of�ice;Box 66
Crystal Ba;�, MN 55323
From: Patrick �te;�an
James llay�bn Design,Ltd.
R�: Minneton�k� �:enter for the Arts.
In your Fax on Ma.y 11 2001 regarding roof drains you brought up a few
questions. They addressed the following:
1. Section1506.1 �of the UBC regarding roof slope. The building has varying roof
slopes of 1/4" p�r foot over the office area, 3/16" per foot over the Sculpture and
Ceramics area, a;�d 1/8" per foot over the north classrooms. Section 1506.1 of
the UBC allows fc�r shallower pitched raofs than 1/4" per foot when they are
designed for wat�ir ponding in accordance with Section 1611 of the UBC. Our
project engineer i:� currently on vacation, but I will forward you that information
when he returns �i.ext week.
2. Sizes of the rc��f scuppe�s. Included is a copy of the Minnesota Plumbing
Code with the siz� of vertical leaders. Using the table in Section 4715.2710
subpart 5 Size of Vertical Leaders, we are able to calculate the areas for our
leaders as follow:�:
The roof o��er the offices is 4240 sqtt. and has one leader. This leader
serves the whole��240sqft. Using the table we are able to calculate its size to be
4 inches.
The roof od•er the Exhibition room is 2849 sqft. and has three leaders.
Each leader serv�:s 950sqft (2849 = 3 = 950) of roof. The table calculates their
sizes to be 2 1/2"'.inches. We will be using 4 inch leaders.
S- �6 = o r o��;.
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05/15/01 TUE 05:49 FA% �002
The roof ower the Painting Drawing room is 1082sqft, and has two leaders.
Each leader serv�:� 546sqft (1092 =2 =546) of roof. The table calculates their
sizes to be 2 inch:;s. We will be using 4 inch leaders.
The roof ov►er the classrovms is 14,053sqft. and has 6 leaders. Each
leader serves 23�2sqft (14,053 :6 = 2342) of roof. The table calculates their
sizes to be 4 inchas. We will be using 4 inch leaders.
The maximum recjuired drain size from above is 4 inches, we will be using 4 inch
drain for alf the le�ders for uniformity.
In Section 1506 0�the UBC Handbook you included, there is the description of
combined overfto�v and drain in one scupper. This seems to be our condition. If
so, the scupper size should be four times the drain size. - one time for the drain
itself and three tiri,�es for the required overflow with a minimum height of 4 inches.
The scupper size�rould be 4 inches high by i 6 inches wide. We will use this
size for all of our �cuppers. �
I will contact you �fter you have time to review this information to see if there are
any additional iter�ns you would like to discuss, or if there are any of these issues
we need to exami�e some more.
Thank you �
Patnck Regan ��
James Dayton De�ign.
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05/15/01 TUE 05:44 FA% �003
U5/14/2001 10:00 Fe1X 76359E�4.124 TS6 LG.�N COh[Pe1NIB5 1�002
• 4716.2T00 STORM 3�WER SYS7'EMS. The equivalent diameter of squsrt or rocynguiar k��y be
taloen as tht diameter of tbat cit�cle�vhich may be h�criba+d wirhiu
' Al)roofs shail be drained inco a,�p�ratc swnn Bewer system,or a ��u�oasl ar�a of the Ieader.
-. .'�c�biped sewer system wl�e auc�systems ete availabk,or f�o a -
of dis�wsal sarisfactory w th�administrative awhoriry. 1n Subp.6. Vah�es�coationoas 6ow. IE U�ere is a conoouous ar
� o case shsl1 waoer Crom cvofs be aGawcd co flow upon the public ��npn����harge iAoo the building sco�m dratn vr bu�d.
sidew�lk 5w�m wster shall not het�rsintd irt�v sewets iet�ended ing swrm sewer�as from a pump�ejector.air-coaditioning plant,
fur sanitary sewage only. . o�sirnllar deviee.each gsqon per minute of die dischage mus�be
STAT AUTH;MS s 326.37 co 3Z6i�5 ����������'t tO��uare Peet of rooFarea,bamed
4715.2710 SI� OF �1l.DING STORM sTA'Y'Av�:MS s �t�-s�m Yq•7s;326.37 00 326.as
ORAINS AND� �;EADEI�S. �"r 23 sR 6a6
Subpact t_ S�e of ba�lding stottn�ram. Thc sire of We build-
4715�7Z0 SUBSOIL DRAINS. °
ing swRd dt�n or soy of ies�ariwatal b�rdnche�haviag a slope of
�; aoe-hslf inch or less per fook sha11�K based�pon d�e maximum �°t�subsoii�aia foc e buildio�is subjeu co badcwamr�ic
prvjec�ed roof or psvad area w be!�awdled aeoo�dfng co s�bpacc 4. shaall be p�qec�ed by ao aec�Wy loeared b�ekwater vaiv�e. Su�
. soil d�ains raay disc6arge into a P�NY�pped atea�aio a
5u6p_�. 5�se ot�l kad�5- Ve�cal ksde�s shsll be sized �"�' Such sumPs do not cequtce vtnts_(Se�pa�s q�7]S.Z430
on thc maaimum Proiected mQf ar�i,according ta subpart 5_ asd 4715.?�440.)
Su6p.3. Redactioo io atis Qrahibitsd. S�onn drain piping shall �AT AUTH:MS s 326.37 W 3?.6.45
not m�iuoe in siza in the direction cf flow, including changes in 4715.273Q 6UILDING SUBDRAIN$,
di�ecbon from horizonc�l to weracaF�
Subp.a. Slte of horixont�l sborrn�►rains B�1d�8 subdraias,�eceiving subsoil�rai�,la�ted b�lo�w the
Ma�[imum projected RoofArea for public�kvd sh�ll disebsrga inro a smap a roedving�k
Diamaa of Drain �i^aias of V�rinas Sloprs the cvnornls o[which shall be wwmaticdly ltfted and disrharged
7ncbes 1/$in.Slope 1/�in.Sbpe 1/Z in.S1ope � iprO�drainagesyste�na�taquuedf�buildmgs�p�,(Seep�
, 4715.?�430aad 49�5_244Q) .
�'� l Square Fte[ Sf uiu�e Foet Square Feec �
1 3 822 1;`160 �,64q, 3'�'ATALITH:bLS s 3�637 to 326.45
� 4 I.SBa x,550 3.760 �
5 3,�ao ��20 �,6� 4715.2740TRAPS ON ST�RM DRAINS
6 5,3so �„5so �o,7ao AND LEADERS.
8 11500 . IG,300 3,000 �
10 20.70U 2:�.200 4r,4pp No traps shai!be requmed for stamwacer drains whid��,e coA-
12 33.300 •�;:OQp �.600 ncctod to a sewec carrying s0ocm walu ea�clusiv�ely_
15 59.500 �3a:o00 119,000
Usc e raoe of rainfall of fo�r indtas p�hvur for sius not bs�ed in Tsaders and scocm drains tha['a,e caieecoed b s oombinod s�wcr
tbis rabla shall be ttspped iF
Subp.S. gise oi verad lesdeis. : A. tho Orain is located wi[hin ten feac of any door.window.
� or othcr opening irt�o an occupied arra;a�
Sixe of Lcadcr or Conducmr M a�;imum proj�ted Roof A,�ea '
tnches ;' Square�eci B. an ou�side leadairoFshoe�.metal is cone�cte�ro�l�e scwm
drain and th�joint of connecoon is withi�oen fcsc af any door.win-
2 � 720 dow,or othar openirg inw an oecupied a�sa. Such eonnocl�on shail
2-1l� . ��pp be az lcasc six inchea abave grade. Tl�e ba�r shaD be laea��d iaside
3 2,Zpp d�e building and be pnovided wQh an acoeas�'blc c1eaoout
¢ ' 4,600
5 � 8,650 STATAUTS:MS s 326.37 eo 326.a5
� 6 13,SQ0
8 : 29,000
Usc a rate uFrai�fall of four i�;�er hour for sizes r�oc liscad;n
this wbk. . .
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05/15/01 TUE 05:46 FA% I�004
�ay-11-ZODi 1�:OZam From-CITY OF•ORONo +g5ZZ4946i6 T-OZ7 P.004/005 F-B95
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TWo excepdom p�u�vide for�idviced venatavon under cectain Fxc�pt for Group R.Division 3 �►d Group U Ovc�cies�
condidons-These ezccpnons�s�e b�permiued�a�da dx De- d�codo prohibics ivof dtainagc wa[rx�ro�n a bwZaiag[o Aow
�-/ pa:tmenc of Hoasiag and Urb��lopmenc minimua�praper� over public pa�p�rq►.71�a in�ant is aot aecessadly pr�►�naing
[y sca�datds and►hc CABO On�and T►vo Farnily Dwe7lin,g Code &ait►�ge ws�at fra�flowit�g evet'p�tblic p�apeity"in gencrdl.
pormaay years wi�oui nap,��ve zxpzeienae and.tbus.represeat bu�rathe��revendng draia�e N►aoa from flowmg ov�r a sid�
etcepcable al�crnatives_ , a►alk�or ptdesQia�walkway c6a�Is between eh�buuldib8 end d1c
pvblic sweet a��hezoug4fa�e.
, lbere ane at ksst two probleios tbat eri�e vrt►en roof dwina,�
S�CTION 7506--ROOF DfiAINAOE a+�'is allowad�o floy►wer a public sidewal�
� i- Undec pYopet eonditfoas ot L�hc and uampasoua. algae
Pes;xive mof drain�e i�r�eqy;red fo�es�"l1QaUy two re�tsons- wili fo�w6oie che wa�cr$o'ws saoas t'�e,sidew8lk aAd
1. ?o pravaac ponding of�+s.�ccr and tl�consogv�et rapid de- create a h�dous.slippery wa�hng su�fact.
[eriorarion of th�roof-�a��ariug ma�al,including po�ao- ? Durin$heavy tsIDsw�ms.the velodry and fioroe of�e a►�
dal for earlr failura oF�t�;roof covetipg. ur�rmiairg fra�th�drai�ca�,�rea�e ha�ous wallang
2_ To prevenc ponding an��e resulaag failure ef c6t roof coadirions fur ped�esoriae�s.
soKcnu+e e�� alternad�•e�y. d�e deR►u�d for ine[eased The.eefore,the usual p�ocedme is m carry tbe mo+f deain lines
SR'engch of�toof SQuce�u�c w wppor�ponding inside d�building�6 th�wsll of che b,alding and Wndet the
A1rlwugh tbe U8C offe�s �:aloecnadve af sav�rel]y de- sidewalk�rougb a curb e�pening inm tbe gunrr.
sfgning$r�f w snpporc any ��cumuladon of water e�mofs�
wacer pondin�is highiy deulrcu:<�ral co tbc roof cov�ing and,as SEG770N 150T—aoo�-coveqiNG au►t�Ara�s
a rP.,�uh.rha roof must be desi�,-�d wi�h a�ive dtaina$e slape
of►/,unic veracal w 13 unia hnrizonnl(396 slope).This dtain- AND APPLICATI�N
a�e slope genrrally ws�l p�ovid.a posi�i�e d�ainag�e sad w�l ro� I50?.2 Idaiei�inboo.CzrrBinly�uoofing msrerials mus�com•
��'"�P°°��' pIy wich gaaliry s�ar�dards�nbodiod in d�e UBC s�and�rds for
v�th�re�he poof does not dr�ir vver�he adge.�CJBC roquires C6apar 15.Fur�hecmor�e,ideAdfica�ia�n of the mofing maaa'ia1�
soof draias w be�ovided at e:s�t►low poine of ckre roof.�� i�mandaw�►ia oed�t'w v�ify thu�e�r co�nply wirh�}►e 4ualiry
cbe da' of nc�noof drrins s:-�id be sach as io con �6�e w�. s�andards.
[rr -��aeeca � u�anr oo .
`�� n- Y enea5,such ss chc'�"ou[h.wesc,lu�ve mfi�equ.ent rsin- In addicion to bearing rhe manuEe,c�urer s label or ideociCying
�f.aad it is qui�t pzobaEk drac��oof drai��s will ba�blockad maz�k on�he marMial.prap�d r�oo�ng and builaup zootuy�n�
due Lo ah a�uu►ulsuon of laav.�s and otDer dzbris.FoC thli�a- ���1ui�ed by du cod�io a,�try a label of an ap�oved
r�on d�e CBC Ta�uir�ti►sc ov�-�;low drains be providzd for ench �ncy having�savicx for ins on of ma�erial and�it�isf�
mof drsia lho inle�flow lind cl the ovzetloa drain musc be lo- ����"�g�'���- 's,in es9a�ce,refers�o�c in-
catzd ao more tban�inc6es(Sl anm)abov2 d'le low poia�of�e �don ses�+ice�pro�ded b otg2�izarinns such a>Underwti[
roo� ers Lsbo�stosies Ync. (UL�and Faetory Muussl(Fbn.Ot�er
organi�ons also provido chis rypa of strvire�aad�hey can ba
Wbeu the rnof drain is loe:,�w3 a4iacen<<o a parapec wsT],nc� de�a�mined by refeiri�� w rhe avalusrioa repor�s issued by
code pcovides thae overAow s�upp�rs in tha adjacenL P�� ICBO ES. •
may ba u3od�pRovided iheY ha.ye an area �hr��s �ha�r�e- $eeausa UL and FM gtnelally do noc provid.inspecdon a�d
quired far�e rovf dcaia sn�d c}� Inl�t flow liae is]ocauzd no labellt�servioes for sbingles(excepe wt�en spoeifically a+csud
mor��Z incbes(Si mrN 3q,c,va me low poiA�of che rovf. foc fac reeardmney),the code requires chat�be ideud�ed
y nn.alarnaoe w the sepamtr-Qvc�'low scupper and roof drain by an appcovtd inspecrioh but'eau or agen�cy sbo�►ius�be arode
is w pravide in oac scuppa�x�tnbined ovedtew�nd d�aia.Fig- of rhe materisL The ase of che w�d•'appsovtd"by zhe cod�in-
urt 1506-1 sbows a sch�madc zle�'1 of this rype of d�sin.The �nds �o eonvey �he meaaiag e�cablisbod�for che de�'mido�oE
opeaing is fouc umes dis req,�-�d drain 51ze—ohe dme fa��6e •'spprovad" in Cbap� 3. These agencios are quioe oft�n
d�ain icself and duoe tiracs wc t6e reguired overFtow a+i�h a exaQe-rela�ed agencies�d tbcir tis�cao be found ia�he evabr
mininnna lu6gltt of-0�inches(l�fii2 mtq).T1��s�cail bas tbe ad- r�ion nposzs o�IC$O ES_
vat��ge o�erzaong f�ewe�hok•s in d�e rooF d�ac a�+e pooenaal ava- q��t is roq�ic+ed by the eods t4 eany m�oA indi�[-
nues of I,ak�.It is also of sv$i�i�ent size w prevea�r�s a�cvawla• iag�he flasb.polm of chC anaxzria�and[be nsme of the manufao-
dop of nash aad debris-For�1,i,;�Pc eE de�sil.flashing�us�be amr.Fires ip roofing'ksttl�s at�jobsirs oxnr ofiaea eaou,Qt►ro
eazrtaUy darailed ar�d�xecu�ai in rho field �o easure�rhe �C�C��ve l�ai�fc A9S�l QojOt be ideud6od.
flashing �nds up �c para��[ abova thc highest probable
wa«slinz at�te low poinL of�hz roof. Farous �+ooSng msc�rials sub f�eaecs ia gcnaal are m
To�c�wn the iiu�enc af�he ct?�ie.che LTBC s�e �at over- qui=ed by rhe codc w be comosion�esist�t Clcazly,nc�roof Wn71
q�� be svbjec6ed W Asaistute a�d, th�a�, cot=+osiw►,resls�a
flow dc8ins bc conqoccad w disin lincs d�a[ sa�independent maaberials aad fasr�ners are nq�.
� fr�m t5e roof dreins.If the e��dswias are conaecord w a com-
� mon dtaitt line,it io�comes easilY appe�u�hat a blotkage of� 15073 tbroogb 1507.]r1�l�,pplicstio�. U�rm Blt�ldr�g Cod�
�on dram lioe woald a�ecF'baeh�he�of dtsin md�e ova- Tabtes 15 8-1 thmugh 15 F eoncatn i�he 6ssie�quarmmez o�
flow aad woubd ds�feat�be pucp�e�se af d►e ovetflo�v. �c UBC foc�bc insealtaiioa of du various:nof-oov�ng maa=N
258 �
05/15/01 TUE 05:50 FA% �1005
1��-31-YOQI ]0:01am Fram-CITY ����OR0�10 +952Z494616 T-OZS P.005/0�5 F�B95
' 1997 YBG FUNDeOOK
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'o aadtion.ihe fnlla�wing psra�pt��ivar addiacmad spe- .�faa rbe�pIy bas beea asracl�ed w r1�e dak d�e soazs-
�.lappi�io�tbquitemen�, si.►e plies are�en e�mbadderd ie 20 Pound�(9-071cg)o�hoc a�
Sil�aup roo$.Figunes 1507-1 tl�au�6.,I507-3 shoar d�ree P�Pa'roofing squame,wbich is appliod continuously so�1taz
YP��Pla o�tbe gpplicaCca�vf buik np soo6ug m bom at no place w�71 adjace4c plies o��elc touch.Thas.t�e aspbah
�all�ble and s1ol�ailaWe deck4_k sbould T��a no�od for b�n7�-up m�ast aat o�iy be app&d coa�nuoasly,bo[mpst a190 be of a Auid
:oofs as arsll as for o�tt's dia[the code rhq�n�as d,e carian �of�6e rPoofin ffeh�d���d�rhe
r
�b�made�o cJean a�d dry dock�w clean�d dty is esaan- S asphslc by�e use o�f a
.inl w ohrain prop�adhaian of� �oo�nremb�c w�6e broom w smooch ouc the p1Y�d.obcaID p3opes s��n Go dlo
�ecic wlw,iF�he deck is na dry.me eA�pped moismr�w�71 ��t below the P1Y)•
we�ttt�lly work ics way w the svtfscc of d�Toofl�$membssne �► flood coa� of 50 po�nds (2?.68
mda pcessurz and eausa blisoe�ing. : 1�gJ of hot as�al� or
60�c��.az r,��h«���,�ne�y,�� t�
In addioon to slu spo�[ moPP�B sf�ow� in Fi�ur�e 1507-3, to che wp s�trt'acc of tbe felt�, ssnnd �irher 300 or 40U prn�usds
anonc�r merhod u w nse sQiP�FPm3 or,�sam�mne�used in (136.1 or 181-�1�of svo�ng a�tcgat�is spread i�co�he flood
he indusn�y.d►e��chat�r.l m�ppiag."The Natio�al Roo�iag ceez AIuT�va�.a mioecal satfaced c�p st►e�ec may ba uszd 4n
�onasc�or'�wssociaaon prefers applica�6n by,a mec6anica1 linu of�he joo�fng agg�eSs�e.p�cu]arly oai ihe sceeper Toof
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530 NORTH TMIRD STREET
� SUITE 330
MINNFAPOIIS MN 55401
6 1 2 . .i 3 !i . l l l l 11 5
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BUILDING CODE ANALYSI5 MINNETONKA CENTER FOR THE ARTS
10/OS/00
1. Occupancy Classification(UBC Chapter 3)
A. Exhibition Space (5,657sfl Group A.3
303.1.1 Group A Division 3 Occupancies Defined. A building or portion of a building having
an assembly room with an occupancy load of less than 300 without a legitimate stage,
including such buildings used for educational purposes and not classed as Group B or E
Occupancies.
B. Classrooms & Office (12,706sfl Group E.1
305.1 Group E Division 1 Occupancies Defined. Any building used for the educational
purposes through the 12`h Grade by 50 or more persons for more than 12 hours per week or
four hours in any one day.
C. Office (2,830s� Group B
304.1 Group B Occupancies Defined. Group B Occupancies shall include buildings,
structures,or portions,thereof,for office,professional or service-type transactions, which are
not classified as Group H Occupancies. Such occupancies include occupancies for the
storage of records and accounts,and eating and drinking establishments with an occupant
load of less than 50.
2. Required Separation in Buildings of Mixed Occupancy (UBC Table 3-B)
A. Between Group E 1 and Group A 3: None
B. Between Group E 1 and Group B: 1 hour
C. Between Group A 3 and Group B: None
Heating Equipment Room Occupancy Separation(UBC 302.5)
In Groups A,B,E ,F,M and S Occupancies,rooms containing a boiler,central heating plant or
hot-water supply boiler shall be separated from the rest of the building by not]ess than a one-hour
occupancy separation.
EXCEPTIONS: In Groups A,B,E,F,M and S Occupancies,boilers,central heating plants or hot-
water Supply boilers where the largest piece of fuel equipment does not exceed 400,00 Btu per
hour(117.2kW) input.
3.Requirements in Group E Occupancies(UBC 305)
A. Special Hazards(UBC 305.2.4)
Laboratories,vocarional shops and similar areas containing hazardous materials shall
separated form each other and from other portions of the building by not less than a one-hour fire
resistive occupancy separation.
When the quantities of hazardous material in such uses do not exceed those listed in Table 3-D or
3-E,the requirements for Sections 307.5.2(Ventilation)and 307.8(chimneys and heating
apparatus) shall apply.
When the quantities of hazardous materials in such uses exceed those listed in Table 3-D or 3-E,
the use shall be classified as the appropriate Group H Occupancy.
r
B. Special Hazards(UBC 305.8)
Chimneys and heating apparatus shall conform to the requirements of Chapter 31 of this code
(UBC)and the Mechanical Code.
All exterior openings in a boiler room or rooms containing central heating equipment,if located
below openings in another story of if less than 10 feet from other doors or windows of the same
building,shall be protected by a fire assembly having a three-fourths-hour fire protection rating.
Such fire assemblies shall be fixed,automatic closing or self-closing.
C.Fire Alarms (UBC 305.9)
An approved fire alarm system shall be provided for Group E Occupancies with an Occupant load
of 50 or more persons. In Group E Occupancies provided with an automatic sprinkler system or
detection system,the operation of such systems shall automatically activate the school's fire
alarm system,which shall include an alarm mounted on the exterior or the building.
4. Type of Construction(UBC 603)
Type IIN For Group E 1 and Group B and Group A-3
5. Full Automatic Sprinkler System
6.Allowable Area Type II N Construction (UBC Table 5-8)
The allowable area of the Group E portion is 13,SOOsqft.
The allowable area of the Group A 3 portion on a building is 9,100sqft..
The allowable area of the Group B portion of a building is 12,OOOsqft.
7.Allowable Area Increases.
1. (UBC 505.1.3)Separation on all sides. Where public ways or yards more than 20 feet
in width extend on all sides of a building and adjoin the entire perimeter, floor area may
be increased at a rate of 5 percent for each foot by which the minimum width exceeds 20
feet. Such increases shall not exceed 100 percent,..
Min separation is 79' to North Prop Line:
79'-20'=59' X a rate on 5%increase per foot=295%> 100%= 100%increase
Group E allowable azea =27,OOOsqft
Group A 3 allowable area = 18,200sqft
Group B allowable area =24,OOOsqft
,
2. (UBC 305.2.1) Buildings or parts of building classed in Group E because of the use
or character of the occupancy shall be limited to the types of construction set forth in
Table 5-B and shall not exceed, in area or height, the limits specified in Sections
504, 505, 506, excent that the area may be increased b,�50 percent when the
maximum travel distance specified in Section 1004.2.5 is reduced bv 50 percent.
(1007.3.3.1 UBC)From Rooms: Max travel distance to corridor or exit =75'
In buildings not more than 2 stories with smoke detectors=90'
In buildings with automatic sprinkler system =110'
(1007.3.3.2 UBC)From Any Location: Max travel distance =150'
In buildings not more than 2 stories with smoke detectors=175'
In buildings with automatic sprinkler system =225'
Group E allowable area=27,OOOsqft X 50%=40,SOOsqft.
Total Allowable Area
Group E =40,SOOsqft
Group A 3 =18,200sqft
Group A 2.1 =27,OOOsqft
Group B =24,OOOsqft
8. Allowable Height
A. As per Table 5-B (UBC)the allowable height is the following:
Group E Type II N construction One Story 55 feet
Group A 3 Type II N construction One Story 55 feet
Group B Type II N construction Two Stories 55 feet
B. (506 UBC)The story limits set forth in Table 5-B may be increased by one story if the
building is provided with an approved automatic sprinkler system throughout.
Group E Type II N construction Two Story 55 feet
Group A 3 Type II N construction Two Story 55 feet
Group B Type II N construction Three Stories 55 feet
(The increase in the number of stories may not apply when the automatic sprinkler systems throughout aze installed
under the following provisions:..2. Section 505 for an increase in allowable uea. 3. Substitudon for one-hour fire
resistive construction pursuant to Section 508.)
C. (506 UBC) Exception to Height Limit. Towers, spires and steeples erected as part of a
building and not used for habitation or storage are limited as to height only by structural
design if completely of noncombustible materials, or may extent not to exceed 20 feet above
the height limit in Table 5-8 if or combustible materials.
D. City of Orono Height Limit. (Sec. 10.28.RR-1B One Family Rural Residential District.)
Subd.5. Area,Height,Lot Width and Yard Requirements.
A.Height.No structure or building shall exceed 2 1/2 stories or thirty feet in height
except as provided in Section 10.75.
Seciton 10.75 Height of Structures.
Subd. 1.Special provisions. The height limitations imposed by other provisions of this
Chapter may be increased by conditional use permit by 50 percent when applied to the
following structures.
L.Cooling Towers.
r '
6. Types of Construction-Fire Resistive Requirements(Table 6-A UBC)
A.Type II N Construction
Bearing Walls-Exterior No Rating Required
Bearing Walls-Interior No Rating Required
Non-Bearing Walls Exterior No Rating Required
Structural Frame No Rating Required
Partitions-Permanent No Rating Required
Shaft Enclosures One Hour
Floors and Ceilings No Rating Required
Roofs and Roof�eilings No Rating Required
Exterior poor and windows Sec.603.3.2
Stairways Sec.603.4
9.Parking.
(Orono Code). Community Center,Post Office,YMCA,YWCA,Physical Cultural Studio, Pool
Halls,Libraries,Private Clubs,Lodges,Museums. Ten spaces plus one for each 300 square feet of floor
area in excess of 2,000 square feet of floor space in the principle structure.
Usable floor area 21,192sqft-2000sqft=19,193sqfb300sqft=64+ 10=74 spaces
r �
10. Occupancy Load(Table 10-A)
Group E 12,706sqft
Room Name Area Occ.LF Occ.Load 2 e�cits
Painting/Drawing 111 1,448sqft 50 29
Multi Media l 112 919sqft 50 19
MM I Storage 112A 156sqft 300 1
Multi Media lI 113 866sqft 50 18
MM II Storage 113A 156sqft 300 1
Multi Media lII 114 741sqft 50 15
MM III Storage 114A 207sqft 300 1
Photo Prep 115 607sqft 50 13
Dark Room 115A 422sqft 50 9
Ceramics 116 1,970sqft 50 40
Kilns 118 677sqft 50 14
Glazing 120 296sqft 50 6
Glaze Mix 121 109sqft 50 3
Sculpture 123 2,766sqft 50 56 Req d
Grinding 124 243sqft 50 5
Secure Storage 125 75sqft 300 1
Cold Storage 126 204sqft 300 1
02 Storage 127 3lsqft 300 1
C2H2 Storage128 3lsqft 300 1
Storage 131 166sqft 300 1
Shop 132 516sqft 50 11
Clay Mix 133 100sqft 50 2
West Concourse 133 2,703sqft 7 386 Req d
*Accessor use. Calculate for exitin onl UBC 1003.2.2.2.1
Tota1248
Grou A.3 5 657s ft
Entry 100 1,098sqft 7 157 Req'd
*Accessor Use. Calculate for exitin onl UBC 1003.2.2.21
Reception 101 446sqft 15 32
Dining 103 1,255sqft 15 84 Req'd
Lecture 104 S 10sqft 50 26
Lecture Storage 104A 85sqft 300 1
Kitchen 105 498sqft 200 3
Storage 108 SOsqft 300 1
Exhibition 109 2,598sqft 15 174 Req d
Exhibition Support 109A 215sqft 300 1
East Concourse 134 942sqft 7 135 Req'd
*Accessor Use.Calculate for exitio onl UBC 1003.2.2.2.1
Tota1322
Grou B 2 830s ft
Open Office 201 1,129sqft 100 12
Copy Room 205 292sqft 100 3
Staff Area 206 186sqft 100 2
Office 207 97sqft 100 1
Office 208 97sqft 100 1
Office 209 167sqft 100 2
Office 210 136sqft 100 2
Office 211 130sqft 100 2
Conf.Room 212 377sqft 15 26
Director's Office 213 219sqft 100 3
Tota154
(
11.Plumbing Fixtures(Table A-29-A)
Group E 1 Requirements 254 Occupants
(12,706sqft;SOsqft per occ.=254 occupants)
Sex Occ WC Lav
Female 127 5 4
Male 127 5 4
Drinking fountains: 3
Group A 3.1 Requirements 189 Occupants
(5,657sqft;30sqft per occ.=189 occupants)
Sex Occ WC Lav
Female 95 3 3
Male 95 3 3
Drinking fountains: 3
Group B Requirements 14 Occupants
(2,830sqft;200sqft per occ.=14 occupants)
Sex Occ WC Lav
Female 7 1 1
Male 7 1 1
Drinking fountains: 1
Total Required
Female 9 8
Male 9 8
Total Included
Female 10 8
Male 9 8
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� SECOND FLODR PLAN EXITINCi
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new building as a portion of the existing building during construction. I believe this is allowed in
the Building code in Section 503.3.
To recap the other issues we discussed during the meeting on the Sth Oct. 2000.
The Art Center will be a mixed use occupancy. It will include a Group E occupancy for the
classroom areas, Group A.3 for the exhibit and dining areas, and Group B for the 2nd floor office
area.
There will be a Hallway running from the front entry North to the Classroom area,then running
East West to connect the Classroom areas. This can be a Hallway,not a corridor,because all of
the classrooms exit directly onto grade ;and the entire building will have an automatic sprinkler
system.
The areas which will need one hour separations will be:
around the Mechanical rooms,the elevator shaft, and the exit corridor on the north side of the
Dining room. (In addition to the Sculpture Room covered above).
The mechanical system is a heat pump system. The chiller will be in the cooling tower and the
make up air handlers will sit on the roof where they are required. The air handling units will be
in the spaces where they are required.
The building will be clad with galvanized wall panels,exterior steel panels, and an exterior wood
composite paneling.
The roof will predominantly be a flat roof with a 1/4" per foot slope. The roof will drain through
scuppers and downspouts. The other areas of the roof will be a galvanized standing seam roof.
Lyle will review the drawings further,and review them with the Fire Marshal. We will schedule
another meeting to review further developments,and as the design of the building progresses.
This information represents our understanding of the discussion that took place at the referenced meeting.
Please contact me with additions or changes within 10 days of receipt of these minutes.
Prepared by
Patrick Regan
James Dayton Design LTD.
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FLOOR AREA= 2,830sqft
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REVIEW
,� S-E[CO=ND FLOOR PLAN EXITING G—O O 2
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