SECTION 15432 STORM DRAINAGE PIPING

This spec was part of the Des Plaines, IL River WRF project that bid Feb 26, 2015.


SECTION 15432 STORM DRAINAGE PIPING
PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes storm-drainage piping inside the building and to locations indi- cated.

B. Related Sections include the following:

1. Division 15 Section "Plumbing Specialties" for storm drainage piping system specialties.

1.2 DEFINITIONS

A. The following are industry abbreviations for plastic piping materials:

1. PE:  Polyethylene plastic.

2. PVC:  Polyvinyl chloride plastic.

1.3 PERFORMANCE REQUIREMENTS

A. Provide components and installation capable of producing piping systems with the fol- lowing minimum working-pressure ratings, unless otherwise indicated:

1. Storm Drainage Piping: 10-foot head of water.

1.4 QUALITY ASSURANCE

A. Piping materials shall bear label, stamp, or other markings of specified testing agency.

B. Comply with NSF 14, "Plastics Piping Systems Components and Related Materials," for plastic piping components. Include marking with "NSF-drain" for plastic drain pip- ing and "NSF-sewer" for plastic sewer piping.


PART 2 - PRODUCTS

2.1 PIPING MATERIALS

A. Refer to Part 3 "Piping Applications" Article for applications of pipe, tube, fitting, and joining materials.

2.2 CAST-IRON SOIL PIPING

A. Hub-and-Spigot Pipe and Fittings:  ASTM A 74, Service class.

1. Gaskets:  ASTM C 564, rubber.

B. Hubless Pipe and Fittings: ASTM A 888 or CISPI 301.

1. Couplings:   ASTM C 1277 assembly of metal housing, corrosion-resistant fas- teners, and ASTM C 564 rubber sleeve with integral center pipe stop.

a. Heavy-Duty,   Type 304,   Stainless-Steel   Couplings:   ASTM A 666, Type 304, stainless-steel shield; stainless-steel bands; and sleeve.

1) NPS 1-1/2 to NPS 4 (DN 40 to DN 100):   3-inch- (76-mm-) wide shield with 4 bands.
2) NPS 5 to NPS 10 (DN 125 to DN 250):   4-inch- (102-mm-) wide shield with 6 bands.

b. Compact, Stainless-Steel Couplings: CISPI 310 with  ASTM A 167, Type 301, or ASTM A 666, Type 301, stainless-steel corrugated shield; stainless-steel bands; and sleeve.

1) NPS 1-1/2 to NPS 4 (DN 40 to DN 100):  2-1/8-inch- (54-mm-) wide shield with 2 bands.
2) NPS 5 and NPS 6 (DN 125 and DN 150):   3-inch- (76-mm-) wide shield with 4 bands.
3) NPS 8 and NPS 10 (DN 200 and DN 250):  4-inch- (102-mm-) wide shield with 4 bands.
4) NPS 12 and NPS 15 (DN 300 and DN 375):  5-1/2-inch- (140-mm-)
wide shield with 6 bands.

2.3 PVC PIPING

A. PVC Pipe:  ASTM D 2665, solid-wall drain, waste, and vent.

1. PVC Socket Fittings:  ASTM D 2665, made to ASTM D 3311, drain, waste, and vent patterns.

B. PVC Special Fittings:   ASTM F 409, drainage-pattern tube and tubular fittings with ends as required for application.


PART 3 - EXECUTION

3.1 EXCAVATION

A. Refer to Division 2 Section "Earthwork" for excavating, trenching, and backfilling.

3.2 PIPING APPLICATIONS

A. Transition and special fittings with pressure ratings at least equal to piping pressure rat- ings may be used in applications below, unless otherwise indicated.

B. Flanges may be used on aboveground pressure piping, unless otherwise indicated.

C. Aboveground Storm Drainage Piping: Use any of the following piping materials for each size range:

1. Hubless, cast-iron soil piping and one of the following:

a. Couplings:  Heavy-duty, Type  304, stainless steel.
b. Couplings:  Compact, stainless steel.

2. PVC pipe, PVC socket fittings, and solvent-cemented joints.

D. Underground Storm Drainage Piping: Use any of the following piping materials for each size range:

1. Service class, cast-iron soil piping; gaskets; and gasketed joints.

2. PVC pipe, PVC socket fittings, and solvent-cemented joints.

3.3 PIPING INSTALLATION

A. Install cleanouts at grade and extend to where building storm drains connect to building storm sewers.

B. Install cleanout fitting with closure plug inside the building in storm drainage force- main piping.

C. Install cast-iron sleeve with water stop and mechanical sleeve seal at each service pipe penetration through foundation wall. Select number of interlocking rubber links re- quired to make installation watertight. Refer to Division 15 Section "Basic Mechanical Materials and Methods" for sleeves and mechanical sleeve seals.

D. Install wall penetration system at each service pipe penetration through foundation wall. Make installation watertight. Refer to Division 15 Section "Basic Mechanical Materials and Methods" for wall penetration systems.

E. Install cast-iron soil piping according to CISPI's "Cast Iron Soil Pipe and Fittings Handbook," Chapter IV, "Installation of Cast Iron Soil Pipe and Fittings."

1. Encase  underground  piping  with  PE  film  according  to  ASTM A 674  or AWWA C105.

F. Make changes in direction for storm piping using appropriate branches, bends, and long-sweep bends. Do not change direction of flow more than 90 degrees. Use proper size of standard increasers and reducers if pipes of different sizes are connected. Re- ducing size of drainage piping in direction of flow is prohibited.

G. Lay buried building drain piping beginning at low point of each system. Install true to grades and alignment indicated, with unbroken continuity of invert. Place hub ends of piping upstream. Install required gaskets according to manufacturer's written instruc- tions for use of lubricants, cements, and other installation requirements. Maintain swab in piping and pull past each joint as completed.

H. Install storm drainage piping at the following minimum slopes, unless otherwise indi- cated:

1. Building Storm Drain:  1 percent downward in direction of flow.

2. Horizontal Storm-Drainage Piping: 2 percent downward in direction of flow.

I. Sleeves are not required for cast-iron soil piping passing through concrete slabs-on- grade if slab is without membrane waterproofing.

J. Install PVC storm drainage piping according to ASTM D 2665.

K. Install underground PVC storm drainage piping according to ASTM D 2321.

L. Do not enclose, cover, or put piping into operation until it is inspected and approved by authorities having jurisdiction.

3.4 JOINT CONSTRUCTION

A. Refer to Division 15 Section "Basic Plumbing Materials and Methods" for basic piping joint construction.

B. Cast-Iron, Soil-Piping Joints:  Make joints according to CISPI's "Cast Iron Soil Pipe and Fittings Handbook," Chapter IV, "Installation of Cast Iron Soil Pipe and Fittings."

1. Gasketed Joints:  Make with rubber gasket matching class of pipe and fittings.

2. Hubless Joints: Make with rubber gasket and sleeve or clamp.

C. Soldered Joints:  Use ASTM B 813, water-flushable, lead-free flux; ASTM B 32, lead- free-alloy solder; and ASTM B 828 procedure, unless otherwise indicated.

D. PVC Nonpressure Piping Joints: Join piping according to ASTM D 2665.

3.5 HANGER AND SUPPORT INSTALLATION

A. Refer to Division 15 Section "Hangers and Supports" for pipe hanger and support de- vices.  Install the following:

1. Vertical Piping: MSS Type 8 or Type 42, clamps.

2. Individual, Straight, Horizontal Piping Runs:  According to the following:

a. 100 Feet (30 m) and Less: MSS Type 1, adjustable, steel clevis hangers.
b. Longer Than 100 Feet (30 m):  MSS Type 43, adjustable roller hangers.
c. Longer Than 100 Feet (30 m), if Indicated:  MSS Type 49, spring cushion rolls.

3. Multiple, Straight, Horizontal Piping Runs 100 Feet (30 m) or Longer:   MSS Type 44, pipe rolls.  Support pipe rolls on trapeze.

4. Base of Vertical Piping:  MSS Type 52, spring hangers.

B. Install supports according to Division 15 Section "Hangers and Supports."

C. Support vertical piping and tubing at base and at each floor.

D. Rod diameter may be reduced 1 size for double-rod hangers, with 3/8-inch (10-mm) minimum rods.

E. Install hangers for cast-iron soil piping with the following maximum horizontal spacing and minimum rod diameters:

1. NPS 1-1/2 and NPS 2 (DN 40 and DN 50):  60 inches (1500 mm) with 3/8-inch (10-mm) rod.

2. NPS 4 (DN 100 and DN 125):  60 inches (1500 mm) with 5/8-inch (16-mm) rod.

3. NPS 6 (DN 150): 60 inches (1500 mm) with 3/4-inch (19-mm) rod.

4. NPS 8 to NPS 12 (DN 200 to DN 300):  60 inches (1500 mm) with 7/8-inch (22- mm) rod.

5. NPS 15 (DN 375): 60 inches (1500 mm) with 1-inch (25-mm) rod.

6. Spacing for 10-foot (3-m) lengths may be increased to 10 feet (3 m).  Spacing for fittings is limited to 60 inches (1500 mm).

F. Install supports for vertical cast-iron soil piping every 15 feet (4.5 m).

G. Install hangers for PVC piping with the following maximum horizontal spacing and minimum rod diameters:

1. NPS 1-1/2 and NPS 2 (DN 40 and DN 50):  48 inches (1200 mm) with 3/8-inch (10-mm) rod.

2. NPS 3 (DN 80): 48 inches (1200 mm) with 1/2-inch (13-mm) rod.

3. NPS 4 and NPS 5 (DN 100 and DN 125):   48 inches (1200 mm) with 5/8-inch (16-mm) rod.

4. NPS 6 (DN 150): 48 inches (1200 mm) with 3/4-inch (19-mm) rod.

5. NPS 8 to NPS 12 (DN 200 to DN 300):  48 inches (1200 mm) with 7/8-inch (22- mm) rod.

H. Install supports for vertical PVC piping every 48 inches (1200 mm).

I. Support piping and tubing not listed above according to MSS SP-69 and manufacturer's written instructions.

3.6 CONNECTIONS

A. Drawings indicate general arrangement of piping, fittings, and specialties.

B. Connect interior storm drainage piping to exterior storm drainage piping. Use transi- tion fitting to join dissimilar piping materials.

C. Connect storm drainage piping to roof drains and storm drainage specialties.

3.7 FIELD QUALITY CONTROL

A. During installation, notify authorities having jurisdiction at least 24 hours before in- spection must be made. Perform tests specified below in presence of authorities having jurisdiction.

1. Roughing-in Inspection: Arrange for inspection of piping before concealing or closing-in after roughing-in.

2. Final Inspection: Arrange for final inspection by authorities having jurisdiction to observe tests specified below and to ensure compliance with requirements.

B. Reinspection: If authorities having jurisdiction find that piping will not pass test or in- spection, make required corrections and arrange for reinspection.

C. Reports: Prepare inspection reports and have them signed by authorities having juris- diction.

D. Test storm drainage piping according to procedures of authorities having jurisdiction or, in absence of published procedures, as follows:

1. Test for leaks and defects in new piping and parts of existing piping that have been altered, extended, or repaired. If testing is performed in segments, submit separate report for each test, complete with diagram of portion of piping tested.

2. Leave uncovered and unconcealed new, altered, extended, or replaced storm drainage piping until it has been tested and approved. Expose work that was covered or concealed before it was tested.

3. Test Procedure: Test storm drainage piping except outside leaders, on comple- tion of roughing-in. Close openings in piping system and fill with water to point of overflow, but not less than 10-foot head of water (30 kPa). From 15 minutes before inspection starts to completion of inspection, water level must not drop. Inspect joints for leaks.

4. Repair leaks and defects with new materials and retest piping, or portion thereof, until satisfactory results are obtained.

5. Prepare reports for tests and required corrective action.

3.8 CLEANING

A. Clean interior of piping.  Remove dirt and debris as work progresses.

B. Protect drains during remainder of construction period to avoid clogging with dirt and debris and to prevent damage from traffic and construction work.

C. Place plugs in ends of uncompleted piping at end of day and when work stops.


END OF SECTION