SECTION 22 43 00 – DRAINAGE SYSTEM
PART 1: GENERAL
1.01
1.02
DESCRIPTION:
A.
General provisions and other plumbing systems are specified in other Sections of Division 22.
B.
This Section covers plumbing drainage systems and equipment.
C.
See Section 22 42 00, Plumbing Fixtures for fixtures and trim.
D.
See Section 22 44 00, Water Systems for water systems and equipment.
E.
See Section 22 48 00, Laboratory Systems for laboratory systems.
F.
Commissioning is specified in Section 22 00 90, Commissioning. This Section includes responsibilities
and obligations in support of the commissioning process specified therein.
QUALITY ASSURANCE:
A.
Conform to the following:
1.
ICC A117.1-2003.
2.
International Energy Conservation Code-2009.
3.
International Plumbing Code-2009.
PART 2: PRODUCTS
2.01
PIPING, FITTINGS, AND JOINTS:
A.
General:
1.
B.
C.
D.
Piping and fitting sizes listed are nominal inside diameter.
Soil, waste, vent, specialty waste, specialty vent, and rainwater, 15" and smaller, below slab-on-grade and
extending to 5' outside:
1.
Piping: hub and spigot cast iron, service weight, petroleum asphaltic-coated inside and out,
ASTM A74-2009.
2.
Fittings: hub and spigot cast iron, service weight, petroleum asphaltic-coated inside and out,
ASTM A74-2009.
3.
Joints: one-piece elastomeric compression gasket, ASTM C564-2009.
Rainwater, 15" and smaller, below slab-on-grade and extending to 5' outside:
1.
Piping: polyvinyl chloride (PVC), DWV, ASTM D2665-2011.
2.
Fittings: drainage pattern DWV PVC, ASTM D2665-2011.
3.
Joints: solvent cement, ASTM D2564-2004(2009)e1.
Soil, waste, vent, specialty waste, specialty vent, and rainwater, 10" and smaller, above slab-on-grade
throughout the building:
1.
Piping: no-hub cast iron, petroleum asphaltic-coated inside and out, ASTM A888-2009.
2.
Fittings: no-hub cast iron, petroleum asphaltic-coated inside and out, ASTM A888-2009.
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SECTION 22 43 00 – DRAINAGE SYSTEM
3.
Joints:
a.
Standard duty stainless steel couplings for all vent piping: mechanical compression type
with neoprene collars, stainless steel bands with transverse corrugations, and stainless
steel clamps and screws, conforming to CISPI 310-2004.
b.
Heavy duty stainless steel couplings for all drainage piping 2" and larger, and all
rainwater piping: mechanical compression type with neoprene collars and stainless steel
screws or bolts designed for a minimum of 80 lbf·in torque. Couplings shall have a
minimum pressure rating of 15 psig.
1)
c.
Extra heavy duty cast iron couplings: mechanical compression cast iron type designed
for a torque pressure of not less than 175 lbf·in, and a minimum pressure rating of 50
psig.
1)
E.
F.
G.
H.
I.
Manufacturer: Clamp-All 80, or Husky SD 4000.
Manufacturer: MG Coupling.
Concealed waste connections from lavatories, sinks, water fountains to cast iron:
1.
Piping: copper tubing, type DWV, hard drawn, ASTM B88-2009.
2.
Fittings: drainage pattern DWV wrought copper, ASME B16.29-2007.
3.
Joints: soldered with 95/5 tin/silver using a compatible flux, ASTM B813-2010 and NSF 612010a.
Waste arm connections from urinals:
1.
Piping: red brass, schedule 40, ASTM B43-2009.
2.
Fittings: drainage pattern DWV cast brass.
3.
Joints: threaded.
Indirect drain, 1" and smaller:
1.
Piping: copper tubing, type M, hard drawn, ASTM B88-2009.
2.
Fittings: wrought copper, ASME B16.22-2001 (R2005).
3.
Joints: soldered with 95/5 tin/silver using a compatible flux, ASTM B813-2010 and NSF 612010a.
Indirect drain, 1.25" and larger:
1.
Piping: copper tubing, type DWV, hard drawn, ASTM B88-2009.
2.
Fittings: drainage pattern DWV, ASME B16.29-2007.
3.
Joints: soldered with 95/5 tin/silver using a compatible flux, ASTM B813-2010 and NSF 61-2010
and NSF 61-2010a.
Pumped discharge from elevator sump pumps:
1.
Piping: copper tubing, type L, hard drawn, ASTM B88-2009.
2.
Fittings: wrought copper, ASME B16.22-2001 (R2005).
3.
Joints: soldered with 95/5 tin/silver using a compatible flux, ASTM B813-2010 and NSF 612010a.
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SECTION 22 43 00 – DRAINAGE SYSTEM
2.02
2.03
2.04
UNIONS:
A.
For copper piping 2" or smaller: cast brass or bronze with copper soldered connections.
B.
For piping larger than 2": flange and gasket type. Flanges in steel piping shall be cast iron.
C.
For galvanized piping: galvanized.
P-TRAPS:
A.
For floor drains and floor sinks: standard type with trap primer.
B.
For service sinks: deep seal type.
C.
Exposed: brass cleanout plugs.
D.
For plumbing fixtures: as specified in Section 22 42 00, Plumbing Fixtures.
CLEANOUTS:
A.
For exterior piping: cast iron inside caulk with adjustable housing, ABS cleanout plug, and heavy duty
scoriated cast iron tractor cover.
1.
B.
For concealed piping in finished area floors: cast iron with internal ABS cleanout plug, adjustable housing,
polished nickel-bronze top, and gasket seal outlet. For cleanouts in floors above grade, provide with
flashing clamp.
1.
C.
Manufacturer: Josam 55000-1-SD-Y, Smith 4111L, Wade 6000-Z-TY-1, or Zurn ZN-1400-HDNL.
For concealed piping in wall construction: no-hub cleanout tee and tapped bronze cleanout plug, with a
stainless steel wall access cover.
1.
2.05
Manufacturer: Josam 57000-Y, Smith 4031L, Wade 6000TY, or Zurn ZN-1400-ZN-NL-T.
For concealed piping in mechanical and equipment room floors: cast iron with internal ABS cleanout plug,
adjustable housing, polished nickel-bronze top, and gasket seal outlet. For cleanouts in floors above
grade, provide with flange.
1.
D.
Manufacturer: Josam 56040-X, Smith 4245C, Wade 6000-Z, or Zurn Z-1400-HD-IC.
Manufacturer: Josam 58910 with 58600 cover, Smith 4532-Y, Wade 8560E+8480R, or Zurn Z1446-BP-NH.
DRAINS:
A.
B.
General:
1.
Outlets shall be same size as the drainage pipe.
2.
Drains shall be from the same manufacturer, unless otherwise indicated.
3.
Provide drain outlets as follows:
a.
Drains in roofs and floors above grade: push-on or inside caulk.
b.
Drains in floors on grade: push-on or inside caulk.
c.
Specialty drains, where specified herein, in roof and floors: threaded.
Finished Area Drains (Series D1):
1.
D1A: cast iron body, trimmed with adjustable 6" square nickel-bronze grate with vandal-resistant
screws and reversible flashing collar.
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SECTION 22 43 00 – DRAINAGE SYSTEM
a.
2.
D1B: cast iron body, trimmed with recessed grate and 1" anti-splash rim, 7" round nickel bronze
grate, trap primer connection, and flashing clamp.
a.
C.
D2A: cast iron shallow body, trimmed with 12" round cast iron round heavy duty grate, sediment
bucket, and flashing clamp.
a.
2.
Manufacturer: Josam 32330X, Smith 2240, Wade 1240-TD, or Zurn Z538.
Roof Drains (Series D3):
1.
D3A: cast iron body, trimmed with 11" round aluminum dome, combined flashing clamp and
gravel stop, adjustable solid insulation extension, sump receiver, and under deck clamp.
a.
2.
Manufacturer: Josam 21000X, Smith 1015, Wade 3000AE, or Zurn Z100-EA.
D3B: cast iron body, trimmed with 11" round aluminum dome, combined flashing clamp and
gravel stop, solid insulation extension, 2" high interior standpipe, sump receiver, and under deck
clamp.
a.
Manufacturer: Josam 26010X, Smith 1070, Wade 3000-DFS, or Zurn Z100-W-2.
Laboratory Drains (Series D4):
1.
D4A: cast iron body, trimmed with 8" round nickel-bronze secured full grate, seepage holes,
chemical-resistant coated interior, sediment bucket, flashing clamp, and anchor flange.
a.
2.06
Manufacturer: Josam 32200X-SD, Smith 2233, Wade 1210-27, or Zurn Z541.
D2B: cast iron deep body, trimmed with 10" round medium duty cast iron grate, sediment bucket,
and flashing clamp.
a.
E.
Manufacturer: Josam 30000X-7E1, Smith 2010-F37, Wade 1100 STD-EF4, or Zurn
Z415-7I.
Mechanical Room Drains (Series D2):
1.
D.
Manufacturer: Josam 30000X-S, Smith 2010B, Wade 1100 G, or Zurn ZN415-S.
Manufacturer: Josam 49220X, Smith 3041, Wade 9010-27, or Zurn ZN-1960-K23.
PUMPS:
A.
Sump Pumps with Oil Control Systems:
1.
Pumps: submersible type, with cast iron or stainless steel body, stainless steel shaft, bronze or
glass fiber-reinforced impeller, mechanical seals, permanently lubricated ball bearings, strainer,
float or micro-switch controls, power cord, and direct connected motor.
2.
Controllers: packaged control system with a NEMA 4x control panel, float switches to start and
stop the pump, a float switch to indicate high liquid level alarm, connecting cables, stainless steel
oil sensor probe interlocked with the pump to prohibit pumping when oil is present, and local
audible and visual alarm at the panel with audible silence button. Provide dry contacts for
communication to the building automation system for pump running, high liquid level, and oil
detected and pump not running.
3.
Manufacturer: Stancor, Zoeller, Liberty, or Weil with Oil Smart Simplex Control Panel.
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SECTION 22 43 00 – DRAINAGE SYSTEM
2.07
GREASE INTERCEPTORS:
A.
2.08
Outside Oil/Water Separators:
1.
Separator shall be a 2 chamber packaged passive unit, designed and manufactured for
underground installation, and ready for installation from the factory. Separator shall be
manufactured in accordance with UL 58 and shall comply with NFPA 30.
2.
Construction:
a.
Tanks shall be constructed of double-wall carbon steel, with a minimum 75 mil
polyurethane exterior coating, and an interior coating compatible with petroleum oils.
b.
Chamber shall have a underflow baffle, a sludge baffle, and velocity head diffuser.
Center over each chamber a 24" diameter access opening with extension and lid up to a
36" diameter access collar at grade. The access collar shall have an AASHTO H-20
wheel loading with the cover installed flush with the finished grade, and designed so that
no vehicle weight is transferred to the underground tank.
c.
Separator shall have inlet and outlet connections, wear plate, striker plates under
openings, pump-out fitting and riser tube and gauge opening, vent openings, coalescer
plates, coalescer screen, sludge baffles, and lifting lugs.
3.
Separator shall be designed to remove oil to 10 mg/L, under flows ranging from 0 to 100 gpm.
Separator total capacity shall be 1000 gallons, with oil storage capacity equal to 43% of total
volume and emergency oil spill capacity equal to 80% of total vessel volume. Separator retention
time shall be minimum 10 minutes.
4.
Separator shall be supplied with an audible and visual alarm system to indicate high oil level,
critical high oil level, and hydrocarbons or water in the separator interstice. Audible alarms shall
be silenceable. Control panel shall contain both level sensor and leak detection control. Control
panel shall be NEMA 4.
5.
Separator shall be provided with a minimum of two reinforced concrete deadman anchors having
tie down irons. Concrete shall have a minimum compressive strength of 4,000 psi. Separator
shall also be furnished with polyester hold-down straps and turn buckles with hook ends.
6.
Furnish with each unit an identification plate, a scaled drawing of the interceptor, a third party
certificate of compliance with the federal requirements for FOG removal and UL 58 compliance
for construction, and the manufacturer's written 30 year warranty.
7.
Manufacturer: Highland Tank HTC-1000 with CDA-15.
ACCESSORIES:
A.
Bolts and nuts: ASTM A307-2007b, Grade B.
B.
Downspout covers: fabricated stainless steel flange with secured hinged perforated grate, and vandalresistant screws.
1.
Manufacturer: Smith SQ-9-2333, Wade 3950-SS, or Zurn Z-1471-79.
PART 3: EXECUTION
3.01
PIPING INSTALLATION:
A.
General:
1.
Piping shall be cut to measurements established at the site and worked into place without
springing or forcing.
2.
Use concentric reducing fittings between different size pipes.
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SECTION 22 43 00 – DRAINAGE SYSTEM
B.
C.
D.
3.
Ream steel, and copper pipe after cutting, turn on end and knock loose dirt, scale, and filings
from interior of pipe.
4.
Install horizontal drainage piping 2" and smaller with a slope of 0.25" per foot, and piping 3" and
larger with a slope of 0.125" per foot unless otherwise noted on the Drawings.
5.
Pitch/grade: piping shall be installed with sufficient pitch to ensure drainage and venting.
Underground Piping:
1.
Install drainage piping outside the building in trenches separate from water piping.
2.
Excavation and backfill: as specified in Section 22 00 10, General.
3.
Underground piping shall be connected to the exterior service lines, or capped or plugged if the
exterior service is not in place.
4.
Piping installed below the level of footings shall be installed 12" horizontally from the footing for
each 12" of depth below the footing.
Piping Joints:
1.
Make changes in the horizontal direction of gravity drainage piping with drainage pattern fittings.
2.
Solder joint connections shall be cut, deburred, cleaned and assembled in accordance with
ASTM B828-2002.
3.
Threaded connections: screw-thread joints shall be made with cut tapered threads. Joints shall
be made tight with Teflon tape. Not more than 2 threads shall show after the joint is made tight,
except no threads shall show in exposed chromium-plated piping.
4.
Flanged joints: at connections to equipment, flanged joints shall be made with ring type gaskets,
extending to inside of bolt holes. Flanged connections to equipment shall be made with full-face
gaskets to match flanges on equipment.
5.
Mechanical couplings on drainage piping: during the torque process, if any one band of the
coupling breaks, replace the entire coupling.
6.
Isolate joints between dissimilar metals and connections to tanks with dielectric fittings.
7.
Provide adaptors where copper or steel pipes connect to cast iron pipe.
8.
Provide adapters where cast iron pipe connects to ductile iron, concrete, or clay pipe, or where
field cuts are made in vitrified earthenware or concrete piping. Adapters shall be sized to fit into
the bell of pipes with hubs, or over the barrel of pipes without hubs.
Coordination:
1.
Pipes shall be installed to permit free expansion and contraction without damage to joints,
hangers, or the building. Arrange piping to minimize stresses caused by expansion and
contraction.
2.
Install piping so as to preserve access to valves and equipment and to provide the maximum
headroom possible.
3.
Provide offsets as required to maintain ceiling height and to coordinate with other trades.
4.
Install exposed piping such that when insulation is applied it will not come in contact with adjacent
surfaces.
5.
Provide flanges or unions at connections to valves and apparatus.
6.
Piping to fixtures and equipment shall be braced so that there is no horizontal or vertical
movement in the piping.
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SECTION 22 43 00 – DRAINAGE SYSTEM
3.02
3.03
3.04
3.05
3.06
3.07
3.09
Pipe supports shall be isolated from copper tubing with rubber sleeves.
8.
Install food service piping above slab-on-grade to allow for rapid changes in temperature.
HUB AND SPIGOT CAST IRON PIPE AND FITTINGS:
A.
Do not use tee fittings in horizontal drainage piping.
B.
Install with hubs upstream.
C.
Joints and fittings shall be made with compression type gaskets.
NO-HUB CAST IRON PIPE AND FITTINGS:
A.
Do not use tee fittings in horizontal drainage piping.
B.
Extend vent piping 12" above the roof.
C.
Torque coupling bolts in accordance with manufacturer's recommendations.
D.
Where extra heavy duty couplings are required for underground connections, coat the stainless steel bolts
with asphaltic paint sealer.
COPPER TUBING AND FITTINGS:
A.
Uninsulated piping installed in masonry construction shall be painted with 2 coats of asphaltum paint.
B.
Clean, prime, and paint exposed uninsulated piping with 2 coats of glossy silver paint.
POLYVINYL CHLORIDE PIPE AND FITTINGS:
A.
Piping, fittings and couplings shall be joined with PVC cement. Piping, fittings, and couplings shall be
cleaned with purple primer before applying cement.
B.
Piping joints shall be in compression during the cement setting time, in accordance with manufacturer's
requirements.
C.
Underground polyvinyl chloride piping shall be placed on a bed of compacted sand, minimum 4" thick.
Backfill space above piping 12" thick with sand.
ROOF PENETRATIONS:
A.
Flash and counter-flash pipes passing through the roof with 4 psf sheet lead, not less than 18" square.
B.
Installation of roof drains in metal deck construction: provide supplemental steel on 2 sides of each drain,
running perpendicular and welded to roof joists.
UNIONS:
A.
3.08
7.
Provide in each connection to each piece of equipment, except where flanges are used, so it may be
removed.
P-TRAPS:
A.
Set traps true and level.
B.
Provide in rainwater piping connecting to combination sewers.
CLEANOUTS:
A.
Provide cleanouts in drainage piping as indicated on the Drawings, and as follows:
1.
At the bottom of each exposed fixture trap which is not integral with the fixture.
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SECTION 22 43 00 – DRAINAGE SYSTEM
3.10
2.
At the beginning of each branch drainage line.
3.
At each change of a horizontal direction greater than 45º.
4.
At the foot of each stack.
5.
In horizontal drain lines at intervals of not more than 50' for inside piping and 100' for outside
piping.
B.
Cleanouts outside the building shall extend up to grade and be set flush with finished grade in a 18" x 18" x
8" thick concrete pad.
C.
Cleanouts for horizontal piping above grade located above the ceiling shall extend through the floor above,
and shall be set flush with that finished floor.
D.
Sanitary cleanouts shall not be installed in return air plenums.
E.
Cleanouts that occur in carpeted floors shall be installed flush with the floor slab and marked with a
stainless steel carpet marker.
F.
Locate cleanouts so that they are accessible, and in compliance with the code.
DRAINS:
A.
B.
C.
General:
1.
Cover the top of each drain with wood, plastic, or a manufacturer-supplied cover during
construction to prevent entry of foreign matter. Do not use duct tape to cover drains.
2.
Remove and clean drain grate, set-screws, insides of drain bodies, and sediment buckets before
substantial completion.
3.
Drains shall not be field modified.
4.
Where waterproof liners are used in the building construction, secure the liners to drain bodies
with clamping rings, making watertight connections.
Floor Drains:
1.
Set top of floor drains flush and level with the finished floor, unless noted otherwise on the
Drawings.
2.
Install drains with recessed grates and anti-splash rims, with the rims flush with the finished floor.
3.
Omit grates of drains receiving piped discharge from mechanical equipment so pipes can turn
down into basket, unless provided otherwise.
4.
Where trap primer connections are made to drain tailpieces, cap or eliminate the trap primer
connection on the drain body.
5.
Set square drainage grates with sides parallel to the adjacent walls.
Roof Drains:
1.
Provide for each roof drain a sheet of 4 psf lead flashing extending at least 8" from the clamping
ring in all directions.
2.
The horizontal portion of scupper drains shall pitch down in the direction of flow not less than
0.25" per foot.
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SECTION 22 43 00 – DRAINAGE SYSTEM
3.11
OIL/WATER SEPARATOR:
A.
Outside:
1.
3.12
Install units as indicated on the Drawings and in accordance with manufacturer's instructions and
municipality requirements. Providing bedding material for oil/water separator per manufacturer's
instructions.
PIPING AND JOINTS TESTS:
A.
Piping and piping joints shall be leak free.
B.
Test soil, waste, vent, and rainwater systems piping and joints by capping or plugging all openings, and
filling each system with a 10' head of water, then allowing to stand filled for 1 hour without any leak down.
Where a system is tested in sections, each section shall be subjected to the same test.
C.
General:
D.
E.
1.
Test piping and joints under floor slabs before slabs are poured.
2.
Tests shall be made while piping and joints are exposed to view.
3.
Submit a statement certifying that piping and joints are tight and have passed the specified test.
Leakage Requirements:
1.
Screwed and flanged joints that leak shall be taken apart and reassembled.
2.
Soldered and solvent cement joints that leak shall be cut-out and replaced.
3.
Cast iron hub and spigot joints that leak shall be taken apart and reassembled with new joining
materials.
4.
Cast iron no-hub joints that leak shall be taken apart and reassembled with new couplings.
Flow Test:
1.
Ensure a smooth and nonobstructed flow of liquid for every drainage pipe, free from construction
or natural sediment debris that may have entered during construction.
2.
Route clean and flush with clear water piping having an obstruction.
END OF SECTION 22 43 00
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