HomeMy WebLinkAboutPlans amd spec on plumbing - Orono Senior Housing 1S hyo rry r3O
443 Lafayette Road N. MINNESOTA DEPARTMENT OF (651) 284-5005
St. Paul, Minnesota 551551-800-DIAL-DLI* ABOR 84 INDUSTRY (65
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LABOR TTY: 651 297-4198
Division of Construction Codes and Licensing
REPORT ON PLANS e! /VEI
Plans and specifications on plumbing: Orono Senior Housing,Highway 12 &Luce Line Trail, Orono, Hennepin 30
County, Minnesota, Plan No. PLB1106-00212 (,`/ tJ'
OFORONO
OWNERSHIP: Kraus-Anderson Realty Co., 4210 West Old Shakopee Road, Bloomington, MN 55437
SUBMITTER(S): Associated Mechanical Contractors Inc., 1257 Marschall Road, Shakopee,MN 55379
Plans Dated: June 7, 2011 with revisions dated August 9, 2011
Date Received: August 25, 2011, August 15, 2011, August 2, 2011, June 21, 2011
Date Reviewed: August 26, 2011
SCOPE: This review is limited to the design of this particular project only insofar as the provisions of the
Minnesota Plumbing Code, as amended, apply, and does not cover the water supply or sewerage system to which
this plumbing system is connected. The review is based upon the supposition that the data on which the design is
based are correct, and that necessary legal authority has been obtained to construct the project. The responsibility
for the design of structural features and the efficiency of equipment must be taken by the project designer.
Approval is contingent upon satisfactory disposition of any requirements included in this report. Special care
should be taken to insure that the material and installation of the plumbing system are in accordance with the
provisions of the Minnesota Plumbing Code. A copy of the approved plans,specifications,and this Report on
Plans must be retained at the project location for future reference.
INSPECTIONS: All plumbing installations must be tested and inspected in accordance with the requirements of
the Minnesota Plumbing Code. As specified in Minnesota Rules, part 4715.2830, no plumbing work may be
covered prior to completing the required tests and inspections. Provisions must be made for applying an air test at
the time of the roughing-in inspection as outlined in Minnesota Rules, part 4715.2820, subpart 2, of the code. A
manometer test, as specified in Minnesota Rules, part 4715.2820, subpart 3, is required at the time of the finished
plumbing inspection. It is the responsibility of the contractor/installer to notify the Minnesota Department of Labor
and Industry when an installation for a state contract job, Minnesota Department of Health licensed healthcare
facility, or project in an area where there is no local administrative authority is ready for an inspection and test. To
schedule inspections, contact the state plumbing standards representative for your region. For your regional
inspector's contact information,visit our website at http://www.dli.mn.gov/CCLD/CCLDContactus.asp
REQUIREMENT(S):
1. The plans indicate a grease interceptor in a detail drawing, but the floor plan and waste and vent riser
diagram do not indicate a grease interceptor. This item was not addressed in the response to our request for
additional information dated August 5, 2011. Accordingly, a grease interceptor may not be installed unless
the floor plan and riser diagram are revised to show the grease interceptor installation, and submitted to this
office with the required $70 plan review fee.
2. Pot or scullery sinks must be provided with waste outlets not less than 2 inches in diameter(see Minnesota
Rules, part 4715.1390, subpart 1). A single 2-inch trap and waste may serve the three-compartment sink if
the trap is located not more than 30 inches from each compartment outlet(see Minnesota Rules,
part 4715.0900). Locating the trap beneath the center compartment will meet this requirement in most
instances.
This information can be provided to you in alternative formats(Braille, large print or audio).
An Equal Opportunity Employer
Orono Senior Housing
Plumbing
Plan No. PLB 1106-00212
August 26, 2011
Page 2
3. Assuming a maximum developed length of pipe between the meter and the most remote outlet of 340 feet,
and a building water pressure at the meter between 46 and 60 psi, and using Minnesota Rules, part
4715.3800: Water distribution branches serving two kitchen hand sinks must be at least 3/4-inch in size.
4. Showers and combination showers-baths shall be equipped with anti-scald control valves. These valves must
be of the thermostatic or pressure balance type in accordance with ANSI/ASSE Standard 1016-96 (see
Minnesota Rules, part 4715.1380, subpart 5). The installer must verify that the maximum temperature
setting from the factory is set or adjusted in accordance with the standard. It is recommended that the
maximum setting of the discharge temperature does not exceed 110 degrees F. This office could find no
evidence that the specified Cornerstone 45311 shower valve meets this requirement.
5. Whirlpool bathtubs and their installation must comply with the following requirements(see Minnesota Rules,
part 4715.1240):
a. Whirlpool bathtubs and their installation must comply with ANSI Standard A112.19.7. Whirlpool
bathtubs that are provided with a pressure sealed door must comply with ASME/ANSI Standard
A112.19.15.
b. The waste control device must be located at the tub outlet.
c. Panels must be provided to allow access to the pumping equipment.
d. If a shower spray is to be provided, it must be equipped with an approved backflow preventer and an
anti-scald control valve complying with ANSI/ASSE Standard 1016-96.
6. A water supply line to a spray/rinse hose on a shampoo sink shall be protected against backflow by the use of
an atmospheric vacuum breaker(see Minnesota Rules, part 4715.2110). Adjustable tailpiece sink systems
must comply with ASME Standard A112.19.12-2006. The tailpiece must be of rigid construction (see
Minnesota Rules, part 4715.1390, subpart 3).
7. Water closets in public bathrooms must have open-front seats, except closed-front seats may be used in
residential or dwelling-type occupancies(see Minnesota Rules, part 4715.1420). This shall include the water
closets in Room Nos. 108, 111, and 205.
8. A full-way valve must be provided on the cold water supply line to the water heater(see Minnesota Rules,
part 4715.1800). Equipment used for heating water or storing hot water shall be protected by approved
safety devices in accordance with Minnesota Rules,part 4715.2210 and part 4715.2230. Verify that a
temperature and pressure relief valve is provided for the water heater.
9. In each single-or multiple-unit dwelling, each family unit shall be controlled by an arrangement of shutoff
valves which will permit each group of fixtures or the individual fixtures to be shut off without interference
with the water supply to any other family unit or portion of the building(see Minnesota Rules,
part 4715.1800, subpart 5).
10. The direct connection between a potable water supply and the lawn irrigation system shall be provided with
an approved backflow preventer in accordance with Minnesota Rules, part 4715.2110, T, and
part 4715.2100.
11. The combination fire protection/domestic water service shall comply with the backflow protection
requirements of AWWA-M14, Chapter 6 (1990)with the exception that the following statement is deleted
from section 6.3: "At any time where the fire sprinkler piping is not an acceptable potable water system
material,there shall be a backflow-prevention assembly isolating the fire sprinkler system from the potable
water system."
Orono Senior Housing
Plumbing
Plan No. PLB1106-00212
August 26, 2011
Page 3
Fire sprinkler systems in which corrosion inhibitors or other chemicals may be introduced either directly or
by pumper connections require a reduced pressure zone (RPZ)backflow preventer on the public water
supply. Local jurisdictions may require additional backflow protection. Please contact the local water
purveyor for information concerning their requirements.
12. The installation of reduced pressure zone backflow preventers is permitted only when periodic testing is done
by a trained backflow preventer tester acceptable to the administrative authority. Testing intervals shall not
exceed one year, and records must be kept. All devices must be tested after initial installation to assure that
debris from the piping installation has not interfered with the functioning of the device. The devices shall be
overhauled at least once every five years. The installation of new backflow preventers must be at least
12 inches, but not more than 6 feet above the finished floor or ground level.
13. Water supply connections to fixtures or equipment which have submerged inlets, or inlets below the spill line
of the fixture or equipment, must be provided with an air gap arrangement, approved backflow preventer or
backflow preventer assembly as specified in Minnesota Rules, part 4715.2000 and part 4715.2010. This
shall include hand-held shower sprays, clothes washers,the coffee maker, and the ice maker.
14. The water softener shall be provided with a bypass valve which will permit the equipment to be serviced or
removed without the need for shutting off the water service completely(see Minnesota Rules,
part 4715.5200).
15. The water service line and fire hydrants must be installed at least 10 feet horizontally from any manhole,
catchbasin, or the sewer forcemain(see Minnesota Rules, part 4715.1710, subpart 3). This isolation distance
must be measured from the outer edge of the pipe or hydrant and the outer edge of the contamination source.
16. Reinforced concrete pipe must meet ASTM C76(see Minnesota Rules,part 4715.0540). p038
17. Draintile pipe which is directly connected to the storm sewer system is classified as storm sewer. Since all
portions of storm sewer located within 10 feet of the water service must be tested,the piping located within
10 feet of the new water service must be hard piped, relocated, or removed. It must be verified that all
draintile inlet elevations to the catch basins are above the storm sewer outlet elevations.
18. Cleanouts must be provided at intervals not to exceed 100 feet for sanitary sewers (see Minnesota Rules,part
4715.1010). Cleanouts may be placed at greater intervals in the forcemain if the owner retains equipment
capable of cleaning the forcemain over the maximum distance proposed between cleanouts. Specifications
for the owner-retained cleaning equipment must be provided to the city of Orono prior to installation of the
forcemain. Alternately,the owner may contract with a cleaning company retaining such equipment. A copy
of the contract must be provided to the city of Orono indicating the capabilities of the cleaning equipment
prior to installation of the sewer.
19. Each horizontal drain branch, including floor drain branches, shall be provided with a cleanout at its upper
terminal with the following exceptions(see Minnesota Rules, part 4715.1000):
a. A fixture trap or a fixture with an integral trap, readily removable without disturbing concealed piping,
may be accepted as a cleanout equivalent for this purpose.
b. A floor drain cleanout may be omitted if the floor drain or fixture branch line is less than 5 feet in
length.
c. Floor drains used for shower drains, recessed slop, or similar receptors may have the full-sized cleanout
installed on the individual vent pipe serving the fixture or on the fixture.
Orono Senior Housing
Plumbing
Plan No. PLB 1106-00212
August 26, 2011
Page 4
20. Cleanouts shall be of the same nominal size as the pipes they serve up to 4 inches in size(see Minnesota
Rules, part 4715.1010). A cleanout must be installed where there is an increase in pipe size from 2 inches to
3 inches and from 3 inches to 4 inches.
21. Ductile iron pipe(DIP)used for water service must comply with ANSI/AWWA Standard C115/A21.15 or
Cl51/A21.51 (see Minnesota Rules, part 4715.0510).
22. The PVC plastic pipe material to be used for the storm sewer must meet one of the following
ASTM Standards: D3034, F789, D2665, F891, or F949. The installation must comply with ASTM
Standard D2321 (see Minnesota Rules,part 4715.0540).
23. The PVC plastic pipe material to be used for the gravity building sewer must meet one of the following
ASTM Standards: D3034,F789, D2665, or F891. ASTM Standard D2241 pipe may be used for sewers 6-
inch and larger. The installation must comply with ASTM Standard D2321, which requires a continuous
granular bed(see Minnesota Rules, part 4715.0530).
24. If plastic pipe is used for the drain, waste and vent system:
a. PVC plastic pipe shall comply with ASTM Standard D2665, D2949, F891.
b. It must be installed in accordance with Minnesota Rules, part 4715.0580(F)and part 4715.0600.
Above-grade horizontal runs of plastic waste and vent pipe cannot exceed 35 feet in total length.
Above-grade vertical stacks constructed of plastic pipe may exceed 35 feet in total height only if an
approved expansion joint is used.
c. Solvent weld joints in PVC and CPVC pipe must include use of a primer which is of contrasting color to
the pipe and cement(see Minnesota Rules, part 4715.0810, subpart 2).
25. The copper water distribution piping must meet ASTM Standard B88 (see Minnesota Rules,
part 4715.0520). All solder and flux used for the potable water distribution systems shall contain less than
0.2 percent lead. Use of 50-50 solder or flux containing more than 0.2 percent lead is prohibited in potable
water distribution systems. Any solder other than 95-5 tin-antimony or 96-4 tin-silver must be specifically
approved by the administrative authority prior to use(see Minnesota Statutes, Section 326B.439). Joints to
be soldered must be properly fluxed with noncorrosive paste-type flux complying with ASTM
Standard B813-00.
26. The installation of cross-link polyethylene(PEX)tubing was specified for the water distribution system. If
all of the following requirements cannot be met, a different material that complies with Minnesota Rules, part
4715.0520 must be used:
a. The tubing system must comply with ASTM Standard F877 and F876.
b. When installed as a system in accordance with ASTM Standard F877,the system tubing and fittings
must be of the same manufacturer.
c. When other fittings are used with ASTM Standard F877 and F876 tubing,the fittings must comply and
be marked with ASTM Standard F1807, F1960, F2080, F2098-01, or F2159. In addition,the tubing
must be marked to indicate the fitting standard and the corresponding tubing standard(e.g. ASTM
F877/F876/F 1960, F877/F876/F 1807, etc.).
d. The system must be installed by a factory trained installer of the particular PEX system to be installed.
Certain manufacturers require installation by licensed plumbers who have been trained to install their
material.
e. All persons installing PEX materials shall have a card on their possession documenting completion of
training by the manufacturer or his agent for the material to be installed.
f. The tubing and fittings must be marked as required by the applicable standard specification and with the
appropriate ASTM designations by the manufacturer.
g. The installation must be in accordance with the manufacturer's installation instructions.
Orono Senior Housing
Plumbing
Plan No. PLB 1106-00212
August 26, 2011
Page 5
27. The installation of chlorinated polyvinyl chloride(CPVC)pipe for water distribution systems must meet the
following requirements(see Minnesota Rules, part 4715.0520):
a. Pipes less than 21/2-inch in size must comply with ASTM Standard D2846.
b. Pipes 21/2-inch to 6-inch in size must be schedule 80 and must comply with ASTM Standard F441.
c. Solvent weld joints must either include the use of a primer which is of contrasting color to the pipe and
cement or a one-step solvent cement complying with ASTM Standard F493 and ASTM Standard D2846
(see Minnesota Rules, part 4715.0810, subpart 2).
d. The installation must be in accordance with International Association of Plumbing and Mechanical
Officials(IAPMO)Installation Standards 20 98.
If CPVC will be used for the water distribution mains, the water sizing may not be adequate due to the
reduced inside diameter of the pipe relative to copper pipe. Accordingly,the design engineer must ensure
that the water sizing meets the minimum requirements of Minnesota Rules, part 4715.3700 for the reduced
inside diameter.
28. The plumbing system shall be tested in accordance with Minnesota Rules, part 4715.2820. All portions of
the storm sewer system located within 10 feet of the building or water service line must be tested in
accordance with Minnesota Rules, part 4715.2820.
29. This office has received a copy of alternate material approval by the city of Orono for installation of AWWA
C906/ASTM F714 HDPE watermain and sanitary sewer forcemain by directional drilling. The alternate
material indicates that the pipe should be manufactured to ASTM F714 and AWWA C906. Please note tat
these items are mandatory.
NOTE(S):
1. The scope of this project consists of the construction of a new 62-unit apartment building. The plumbing
installation includes a bathroom and a kitchen sink for each unit, a commercial kitchen, clothes washers, mop
sinks, a whirlpool bathtub, a shampoo sink, an exterior sewage lift station, and a site storm drainage system.
2. This facility will be served by new municipal water and sewer services.
Authorization for construction in accordance with the approved plans may be withdrawn if construction is not
undertaken within a period of two years. The fact that the plans have been approved does not necessarily mean that
recommendations or requirements for change will not be made at some later time when changed conditions,
additional information, or advanced knowledge make improvements necessary.
Approved:
Bradley C. Erickson
Public Health Engineer
Plumbing Plan Review and Inspections Unit
651/284-5880
cc: Associated Mechanical Contractors .
Kraus-Anderson Realty Co.
City of Orono Building Official
Hennepin County EHS
File