221000 - plumbing piping.doc
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- Construct Addition/Fire Suppression B104
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- FA6656-09-R-0005
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Specification Section 22 10 00 Plumbing Piping
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SECTION 22 10 00
PLUMBING PIPING
PART 1 - GENERAL
1.01 Related Documents
A.
Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.
1.02
SECTION INCLUDES:
A.
Pipe and pipe fittings
B.
Valves
C.
Sanitary sewer piping system to 5'-0" outside building including connection to main
D.
Domestic water piping system to 5'-0" outside building including connection to main
E.
Natural gas piping system including connection to meter manifold.
1.03
RELATED SECTIONS:
A.
Section 22 01 00 - General Plumbing Requirements
B.
Section 22 05 29 - Pipe Hangers and Supports for Plumbing Piping
C.
Section 22 07 19 – Plumbing Piping Insulation
D.
Section 22 20 00 - Plumbing Specialties
E.
Section 22 30 00 - Plumbing Equipment
F.
Section 22 40 00 - Plumbing Fixtures
1.04
SUBMITTALS:
A.
Submit product data in accordance with Section 22 01 00.
B.
Include data on pipe materials, pipe fittings, and valves.
1.05
QUALITY ASSURANCE:
A.
Valves shall have manufacturer's name and pressure rating marked on valve body.
B.
Welding materials and procedures shall conform to ASME Code and applicable state regulations.
C.
Welder's certification shall be in accordance with ANSI/ASME Section 9.
D.
All pipe and fittings shall comply with the governing Plumbing Code.
1.06
DELIVERY, STORAGE, AND HANDLING:
A.
Deliver, store and protect products in accordance with Section 22 01 00.
B.
Deliver and store valves in shipping containers with labeling in place.
PART 2 - PRODUCTS
2.01
UNDERGROUND SANITARY PIPING, WITHIN FIVE FEET OF BUILDING:
A.
All sizes shall be PVC Schedule 40 DWV pipe and fittings. Shall be manufactured in accordance with either ASTM D3034 or F1866. The PVC material shall have a minimum cell classification of 12454-B as defined in ASTM D-1784.
2.02
ABOVEGROUND SANITARY WASTE AND VENT PIPING:
A.
All sizes shall be ASTM A888 service weight hubless cast iron pipe and cast iron no-hub fittings with CISPI-310 neoprene couplings, stainless clamps, and shields.
2.03
UNDERGROUND WATER PIPING, WITHIN FIVE FEET OF BUILDING:
A.
3" and smaller shall be ASTM B88 Type K copper tubing with ANSI B16.22 wrought copper solder joint fittings.
B.
4" and larger shall be ANSI A21.51 Class 53 ductile iron pipe with ANSI A21.10 push-on bell tight fittings with ANSI 21.11 rubber gaskets. Pipe and fittings to be cement lined ANSI A21.4.
2.04
ABOVEGROUND WATER PIPING:
A.
3" and smaller shall be ASTM B88 Type L copper tubing with ANSI B16.22 wrought copper solder joint fittings.
2.05
NATURAL GAS PIPING:
A.
Gas piping shall be Schedule 40, black steel ASTM A53. Use forged steel fittings, ASTM A234, and welded piping systems for sizes greater than 2" and use 150 psi malleable iron screwed fittings for piping 2" smaller.
2.06
UNIONS, FLANGES, AND COUPLINGS:
A.
Unions shall be 150 psig malleable iron for threaded ferrous piping 2" and smaller and bronze unions with soldered joints for copper piping 3" and smaller.
B.
Flanges shall be 150 psig forged steel slip-on types for ferrous piping 3" and larger with 1/16 inch preformed neoprene gaskets for gas service.
C.
Grooved and shouldered pipe end couplings shall be malleable iron housing clamps to engage and lock, designed to permit some angular deflection, contraction, and expansion; "C" shape composition sealing gasket; steel bolts, nuts, and washer; galvanized couplings for galvanized pipe.
D. Dielectric connections shall be unions with galvanized or plated steel threaded end, copper solder end, and water impervious isolation barrier.
E. All PVC pipe joints shall be gasketed, bell and spigot, push-on type conforming to ASTM D3212.
2.07
ACCEPTABLE MANUFACTURERS - VALVES:
A.
Nibco
B.
Crane
C.
Powell
D.
Apollo
2.08
GATE VALVES:
A.
3 Inches: Bronze body, non-rising stem and hand wheel, inside screw, wedge disc, solder ends. Nibco S-113.
2.09
BALL VALVES:
A.
Up to 2 Inches: Bronze body, stainless steel ball, teflon seats and stuffing box ring, lever handle, solder ends. Nibco S-580-BR.
2.10
GAS COCKS:
A.
Up to 2 Inches: Bronze body, bronze tapered plug, non-lubricated, teflon packing, threaded ends. Crane 270.
2.11
SWING CHECK VALVES:
A.
Up to 3 Inches: Bronze swing disc, renewable disc and seat, solder ends. Nibco S-413-B.
PART 3 - EXECUTION
3.01
PREPARATION:
A.
Ream pipe and tube ends and remove burrs. Bevel plain end ferrous pipe.
B.
Remove scale and dirt, on inside and outside, before assembly.
C.
Make piping connections to equipment with flanges or unions.
3.02
INSTALLATION:
A.
Provide non-conducting dielectric connections wherever joining dissimilar metals.
B.
Route piping in orderly manner and maintain gradient.
C.
Install piping to conserve building space and not interfere with use of space.
D.
Group piping whenever practical at common elevations.
E.
Install piping to allow for expansion and contraction without stressing pipe, joints, or connected equipment.
F.
Provide clearance for installation of insulation and access to valves and fittings.
G.
Provide access where valves and fittings are not exposed.
H.
Slope water piping and arrange to drain at low points.
I.
Excavation and backfill shall be in accordance with Paragraph 3.06.
J.
Install bell and spigot pipe with bell end upstream.
K.
Install valves with stems upright or horizontal, not inverted.
L.
Joints in copper lines shall be made with 95-5 tin antimony solder.
3.03
APPLICATION:
A.
Use grooved mechanical couplings and fasteners only in accessible locations.
B.
Install unions downstream of valves and at equipment or apparatus connections.
C.
Install ball valves for shut-off and to isolate equipment, parts of systems, or vertical risers in lines 2" and smaller and gate valves in lines 3" and larger.
D.
Install globe valves for throttling, bypass, or manual flow control.
3.04
DISINFECTION OF DOMESTIC WATER PIPING SYSTEM:
A.
Prior to starting work, verify system is complete, flushed, and clean.
B.
Ensure PH of water to be treated is between 7.4 and 7.6 by adding alkali (caustic soda or soda ash) or acid (hydrochloric).
C.
Inject disinfectant, free chlorine in liquid, powder, tablet or gas form, throughout system to obtain 50 to 80 mg/L residual.
D.
Bleed water from outlets to ensure distribution and test for disinfectant residual at a minimum of 15 percent of the outlets.
E.
Maintain disinfectant in the system for 24 hours.
F.
If the final disinfectant residual tests less than 25 mg/L repeat treatment.
G.
Flush disinfectant from system until the residual is equal to that of the incoming water or 1.0 mg/L.
3.05
PIPE TESTING:
A.
Water piping shall be hydrostatically tested to 125 psi in accordance with Section 15050.
B.
Storm and sanitary waste and vent piping shall be tested in accordance with the governing Plumbing Code.
C.
Natural gas piping shall be pneumatically tested to a pressure of one and one-half times the system working pressure, but not less than 50 psi in accordance with Section 220100.
3.06
EXCAVATION AND BACKFILL:
A.
The Contractor shall do all excavating and backfilling in connection with his work.
B.
Pipe trenches shall be cut to instrument grade, held to minimum width to accomplish the work, cut out for pipe hubs, and fittings to obtain a solid bed for all buried work. In the event trenches are cut too deep, they shall be filled with sand to correct elevation and material shall be mechanically tamped to secure the foundation required. In event that unsuitable material for adequate pipe support is encountered, same shall be removed to sufficient depth and backfill material installed to secure proper foundation.
C.
No piping shall be laid in water. Contractor shall provide and operate pumping equipment as may be necessary and shore trenches as may be necessary to prevent caving in of the work. Contractor installing the work shall be responsible for any damage to the work of other contractors as a result of underground work.
D.
Backfill shall be fine granular sand, to proper finished grade. Hand fill and hand tamp to not less than 12" above piping in 6" layers and complete backfill tamped in layers not to exceed 6". Backfill shall be compacted to 100% Standard Proctor.
E.
When or if rock is encountered, the tamped sand bed below the pipe shall be a minimum of 6".
F.
Excess excavated materials and debris shall be removed from the site by Contractor making the excavation.
END OF SECTION 22 10 00
22 10 00-2
PLUMBING PIPING
12910-330
Revised 3/2/09
12910-330
PLUMBING PIPING
22 10 00-1
Revised 3/2/09
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