Memorial Hermann Best Practices
July, 2013
SECTION 22 13 16 STORM WATER, SANITARY WASTE AND VENT PIPING
PART 1 - GENERAL
A.
RELATED WORK
B.
Section 22 05 00: Common Work Results for Plumbing
1.01
A.
1.02
A.
SUBMITTALS
Submit product data for review on piping and fittings. Submittal data shall include:
1.
Manufacturer of pipe.
2.
Tests or listing by recognized testing laboratory that certifies material composition is in
accordance with ANSI/ASTM requirements.
3.
Product data for pipe and fittings to be used on each piping system.
SUBMITTALS
Submit product data for review.
PART 2 - PRODUCTS
2.01
CAST IRON SOIL AND VENT PIPE
A.
Only pipe made in the United States of America will be accepted.
B.
Conform to ASTM A-74, A-888, and CISPI 301,310.
C.
Standard weight pipe with drainage fittings for:
1.
Sanitary waste, vent, and drainage pipe 2" and larger above ground.
2.
Building storm drains.
3.
Rainwater conductors inside building.
4.
Drain lines under buildings, and under exterior concrete or other paving. Extend cast iron
piping at least 5 feet outside of building.
5.
Extra heavy pipe with drainage fittings for:
a.
Grease waste and vent, 2" and larger.
D.
Joints in Cast Iron Pipe:
1.
Below grade: Bell and spigot with neoprene compression gaskets
2.
Above grade: No-Hub using stainless couplings, meeting CISPI 310-04
3.
Above grade (6" and larger and in extra heavy weight pipe): No-Hub using stainless
couplings, meeting CISPE 310-04 and designated heavy weight (HW) as manufactured
by Mission Rubber Company or equivalent. Flanged gasket to be made of Neoprene
rubber meeting the requirements of ASTM C564, with seating rings under each stainless
steel clamp.
2.02
DUCTILE IRON PIPE AND FITTINGS
A.
Manufactured in accordance with latest revision of ANSI A21.51/AWWA C151.
B.
Use Class 52 thickness or heavier for 12" diameter and less and Class 51 thickness or heavier
for 14" diameter and larger.
C.
Furnish pipe with standard thickness cement lining on inside with a bituminous seal coat and a
bituminous coating on the outside.
STORM WATER, SANITARY WASTE & VENT PIPING
22 13 16 - Page 1
Memorial Hermann Best Practices
July, 2013
D.
Clearly mark pipe exterior to indicate the manufacturer, date of manufacturer, pipe class and
weight.
E.
Provide for the following services:
1.
Pumped and forced sanitary sewer piping.
F.
Fittings:
1.
Acceptable Manufacturers: Fastite by Acipco, Tyton by U.S. Pipe Co., or Bell-Tite by
James B. Clow and Sons.
2.
Ductile iron, cement lined, bituminous coated, manufactured in accordance with the latest
revision of ANSI/AWWA C110.
3.
Furnish with mechanical joints conforming to ANSI A21.11 with 250 psi pressure rating.
2.03
PVC PIPE AND FITTINGS
A.
Polyvinyl chloride sewer pipe and fittings (4" to 15" diameters) shall be as manufactured by H and
W Industries Pipe Charlotte, or equal.
B.
PVC pipe, fittings, cement, and joint cleaner for entire project shall be supplied by a single
manufacturer.
C.
PVC schedule 40, Type I, DWV, ASTM D-2665, 1120, 160 PSI at 73 degrees F. Solvent cement
shall meet ASTM No. D-2564 for (PVC-DWV) plastic and pipe fittings. If permitted by governing
code authority, may be used for:
1.
Air handling unit condensate drains above grade only if room is not used as return air
plenum.
2.
Inside gravity, under floor slab sanitary and storm waste drainage systems, with waste
temperatures below 140 degrees F.
3.
Condensate drains from rooftop units shall be UV resistant where exposed.
D.
CPVC schedule 80, ASTM D-2846, 230 psi at 73 degrees F. Solvent cement shall meet ASTM
No. F-493 for chlorinated polyvinyl chloride (CPVC) plastic pipe and fittings. If permitted by
governing code authority, may be used for:
1.
Inside gravity, under floor slab sanitary waste drainage systems, where temperature of
waste discharged into drainage system exceeds 140 degrees F.
2.
Under floor conduit for steam condensate drainage piping below slabs.
3.
Outside gravity, underground sanitary sewer drainage piping, from 5'0" outside the
building to the connections point to local municipality.
E.
Fittings:
1.
Permanently identify each fitting in accordance with MSS-SP-2241, and with
manufacturer's trademark.
2.
Include certification with submittal data that fittings and flanges meet applicable
requirements.
2.04
CONCRETE PIPE
A.
Pipe 10" in diameter and smaller: Class III, with rubber joint gaskets.
B.
Pipe 12" diameter and larger: Class III, reinforced concrete, with rubber joint gaskets.
C.
Use concrete pipe for:
1.
Exterior underground sanitary sewers
2.
Exterior underground storm sewers
STORM WATER, SANITARY WASTE & VENT PIPING
22 13 16 - Page 2
Memorial Hermann Best Practices
July, 2013
PART 3 - EXECUTION
3.01
INSTALLATION
A.
Pipe Jointing
1.
Clean inside of pipe before installing it. Keep installed piping clean, and protect ends
from foreign matter by capping or plugging them.
2.
Install pipe so that it does not interfere with opening of doors or apparatus, access to
equipment, or to electrical equipment.
3.
Run pipes in straight lines and square with building. Install risers plumb. Make offsets
only where indicated and where necessary.
4.
Do not install or route any pipes that contain liquids; water, chiller water, drain lines, etc.,
above electrical panels, distribution systems, or any other electrical gear, electrical
rooms, tele/data rooms, transformer rooms, audio/visual rooms, or elevator equipment
rooms.
a.
Fire protection piping runouts serving only these rooms shall be installed in these
rooms.
b.
Do not install piping above electrical equipment such as starters, electrical
panels, variable frequency drives, motor control centers, or disconnects. Also,
do not weld or tack weld within 25-feet of any installed variable frequency drive.
Maintain code required clearance above, below and to sides of electrical
equipment.
c.
Only install piping in elevator machine rooms that is serving that room.
d.
In so far as possible, drainage piping shall not be installed overhead, whether
exposed or above ceiling, in operating rooms, delivery rooms, nurseries, food
preparation or serving areas, and in rooms listed above. Where unavoidable and
with engineer of record approval, provide drain troughs or other means to carry
away leakage.
B.
Grading Pipes for Drainage:
1.
Uniformly place storm drainage pipes and footing drain pipes at elevations and slopes
indicated. If no elevations or slopes are indicated, slope pipes at not less than 1/8" per
foot.
2.
Uniformly place sanitary sewer pipes at elevations and slopes indicated.
C.
PVC Joints:
1.
Make joints in accordance with cement manufacturer's printed instructions.
D.
Cast Iron Pipe Joints:
1.
Install compression gaskets and No-Hub bands in accordance with CISPI installation
methods and manufacturer's instructions.
E.
Bracing Joints:
1.
Provide braces and bridle rods as required to reinforce joints.
2.
If mechanical lock type couplings are used, then prepare pipe ends and make joints in
accordance with pipe coupling manufacturer's printed instructions.
3.
Where large pipes underground are subject to shock because of sudden changes in
liquid flow rate, provide concrete thrust blocks at joints, fittings, and changes of pipe
direction. Provide thrust blocks in accordance with applicable pipe industry trade or
research organization recommendations.
a.
For example, for ductile iron pipe follow recommendations of Ductile Iron Pipe
Research Association.
END OF SECTION
STORM WATER, SANITARY WASTE & VENT PIPING
22 13 16 - Page 3