333000 sanitary sewer.pdf

F5W61608 USPFO Warehouse Ohio Army National Guard Rev. 0 Defense Supply Center Columbus, Ohio 30 January 2009 Bid Final

SANITARY SEWER 333000 - 1

SECTION 333000 - SANITARY SEWER

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. CONTRACTOR shall pay for all permits required under this Specification.

1.2 DESCRIPTION

A. Work Under This Section Shall Include:

1. Sanitary sewer installation

2. Materials

3. Restoration

4. Testing

1.3 REFERENCE STANDARDS

A. ASTM: American Society for Testing and Materials

B. AASHTO: American Association of State Highway and Transportation

PART 2 - PRODUCTS

2.1 PIPE MATERIAL

A. PVC Sewer Main

1. Sizes 8 inches through 15 inches: ASTM D3034, SDR 35.

2. Sizes 18 inches through 27 inches: ASTM F679.

3. Joints: Elastomeric conforming with ASTM D3212.

B. PVC Sewer Service

1. Conform with ASTM D1784 and D1785.

2. Sizes 4 inches and 6inches: Schedule 40.

3. Joints: Solvent weld conforming to ASTM D2855.

C. Concrete Reinforced Pipe.

1. Conform to ASTM C76.

2. Use "C" wall.

3. Joints: Bell and spigot conforming to ASTM with rubber O-ring gaskets.

SANITARY SEWER 333000 - 2

2.2 MANHOLES

A. Precast Manholes.

1. Conform with ASTM C478 for precast components.

2. Joints: Conform with ASTM C443.

3. Gasket: 1-1/4 inch thick butyl conforming with AASHTO M198.

B. Cast-In-Place Manholes.

1. Conform with drawing details.

2. Use only where called for on drawings.

C. Manhole Steps.

1. Shall be a 2 inch diameter grade 60 steel reinforcement rod encapsulated in copolymer polypropylene.

2. Steps shall be as manufactured by M.A. Industries, Inc., or equal.

D. Castings.

1. Conform to ASTM A48, Class 35.

2. Shall be AASHTO H-20 rated.

3. Lid shall be a non-rocking with concealed pick holes and self-seal gasket.

4. Use Neenah R-1500 or equal.

E. Frame and Chimney Seals.

1. Shall be a flexible internal rubber or PVC boot.

2. Boot shall seal from the manhole frame to manhole cone section.

3. Boot thickness: 3/16 inch minimum.

4. Compression rings, top and bottom.

a. 16 gauge minimum.

b. Type 304 stainless steel with stainless steel adjusters.

5. Acceptable manufacturers:

a. Cretex.

b. Sewer Seals, Inc.

c. An approved equal.

6. Tool for removal and installation.

a. Provide Owner with one tool per project.

SANITARY SEWER 333000 - 3

2.3 WYES, RISERS AND FITTINGS

A. Shall be the same type and class as the sewer service pipe.

2.4 INSULATION BOARD

A. Extruded polystyrene conforming with AASHTO M230.

B. Provide where required by plans.

2.5 STEEL CASING PIPE

A. Minimum yield strength of 35,000 psi.

B. Minimum wall thickness for E72 loading:

C. Increase casing wall thickness a minimum of 0.060 inches if installed without a protective coating.

2.6 PIPE BEDDING

A. Shall be 3/4 inch crushed stone, ASTM D448 - No. 67.

B. Loss due to sulfate soundness test shall not exceed 10%.

C. Loss due to abrasion test shall not exceed 40%.

Nominal Diameter (inches) Nominal Thickness (inches)

Less than 14

0.188

14 and 16

0.219

0.250

0.281

0.344

0.375

0.406

0.469

0.500

SANITARY SEWER 333000 - 4

D. Gradation:

Sieve Size % Passing By Weight

1"

3/4 "

90 - 100

3/8 "

20 - 55

No. 4

0 – 10

2.7 SELECT BACKFILL

A. Sand: Well-graded, unwashed bank run or crushed bank run free from clay lumps, organic matter, and other deleterious materials with a gradation as follows:

Sieve Size

% Passing By Weight

3/4"

No. 4

90 - 100

No. 10

45 - 90

No. 40

15 - 45

No. 200

0 – 10

PART 3 - EXECUTION

3.1 SEWER MAIN INSTALLATION

A. Grade and alignment shall be established with laser equipment.

1. Sewers shall be laid with straight alignment between manholes.

2. Slope between manholes shall be uniform with no ponding water.

B. Bed pipe on a minimum of 4 inches of crushed rock conforming to ASTM D448 - No.

67. The bedding material shall be brought up to the springline of the pipe:

1. Initially cover pipe with a minimum of 12 inches of clean earth fill compacted to 95% Standard Proctor Density. Clean earth fill shall be void of the following:

SANITARY SEWER 333000 - 5

a. Gravel larger than 1-1/2 inches.

b. Organic content.

c. Silty clays with high plasticity.

d. Manmade rubble.

e. Fill contaminated with hazardous waste.

C. Pipe Laying.

1. Conform with section: "Trenching, Backfilling and Compacting".

2. Lay pipe upgrade with spigot pointing in direction of flow.

3.2 SERVICE CONNECTIONS

A. Unless indicated otherwise, terminate services at the property line.

B. Services shall conform with all plumbing codes for depths and installation. Service depth shall be sufficient to accommodate the lowest service point or eleven (11) feet deep at the property line, whichever is greater.

C. Clean-outs required by the plumbing code or ordinances shall be incidental to the service installation.

D. When a service is not immediately connected:

1. Mark in accordance with details. The Contractor shall record the location, length and depth for record drawings.

2. Provide a watertight cap on end of service.

E. Install Wye Branches where directed.

1. New sewers: Utilize a factory made wye.

2. Existing sewers: Utilize a saddle type wye.

3. Wyes connected to concrete pipe shall be core drilled and installed with a flexible watertight connector which can be mechanically expanded into the cored opening.

4. Wyes shall be oriented at a ten (10) or two (2) o'clock position from the main.

F. Riser Installation.

1. Install where requested by Contracting Officer’s Representative.

2. Conform with appropriate details.

3. Bends shall be 45°.

4. Place risers on a minimum of 6 inches of crushed stone conforming to ASTM

D448 - No. 67 compacted to 95% Standard Proctor Density.

5. Risers shall be installed at a forty-five (45) degree angle from horizontal.

SANITARY SEWER 333000 - 6

3.3 MANHOLES

A. Installation.

1. Place manholes on a minimum of 6 inches of crushed rock conforming to ASTM D448 - No. 67, compacted to 95% Standard Proctor Density.

2. Establish flowline and rim elevations from grade stake provided.

3. Furnish manholes in 4 foot diameter (standard diameter) when dimensions are not shown.

4. Manholes shall be precast construction, unless shown otherwise

5. Provide manhole riser sections in a combination of lengths which will minimize the number of joints.

6. Seal manhole joints with 1-1/4 inch Butyl-Lok preformed tape or equal, conform-ing the AASHTO M-198.

7. Set casting frames and adjusting rings on a full bed of mortar.

a. Pitch castings to match street crowns.

8. Pipe shall enter manholes through a flexible, watertight gasket or connector manufactured in accordance with ASTM C443 or C923.

a. Whenever practical, pipe opening shall be factory made using A-Lok or equal.

9. The following shall be filled with mortar and finished smooth:

a. Interior joints and lift holes

b. Annular space around pipes: Interior bottom half only.

B. Inverts:

1. Furnish precast manholes with shop manufactured inverts.

2. Shape and slope flowline of invert to match largest connecting pipe.

3. Slope invert bench upward to manhole wall.

C. Drop Manholes:

1. Furnish where shown on plans and conform with plan details.

2. Drop size:

a. For sewers 8 inch diameter through 18 inch diameter: 8 inch drop.

b. For sewers 21 inch diameter through 30 inch diameter: 12 inch drop.

3. Encase drop in 3,000 psi concrete.

D. Contractor shall furnish the Owner two (2) manhole cover removing tools (suitable for concealed pick hole) per contract.

SANITARY SEWER 333000 - 7

3.4 BORING AND JACKING CASING PIPE

A. Install casing pipe to the limits and elevation which will allow the carrier pipe to be installed to the required line and grade.

B. Fit the carrier pipe with banded wood skids or manufactured spacers which shall:

1. Allow grade adjustments.

2. Prevent floating and buckling of the carrier pipe.

3. Provide a low friction coefficient so the carrier pipe can be slid into place with-out splitting bells.

C. Provide skid/spacers at each pipe joint, and at the center of each pipe (approximate spacing six feet to eight feet).

D. Fill annular space between casing and carrier pipe with sand or pea gravel.

3.5 FIELD QUALITY CONTROL

A. Leakage Tests

B. Test all sanitary sewer in accordance with the Construction and Materials Specifications, adopted October 1, 2002 by the City of Columbus and as modified by this Specification.

C. Low Pressure Air Test.

1. Test all sewer in accordance with ASTM C828.

2. Contractor shall provide testing equipment, safety equipment and personnel.

3. Contractor shall provide a means to determine the groundwater elevation.

4. Determine test time as follows:

a. Test times for pipeline segments with uniform pipe size shall be taken from the test timetable list.

5. Specified test time (in minutes) required for a pressure drop from 3.5 psi to 2.5 psi:

a. If pipe to be tested is submerged in groundwater, add 0.5 psi per foot of groundwater over the low end of the segment being tested.

b. If pressure drops more than 1.0 psi during the test period, the test will be considered failed.

Low Pressure Air Test Duration (Minutes)

Pipe Diameter "D" in Inches

SANITARY SEWER 333000 - 8

0.3

0.3

0.45

0.52

0.60

0.74

0.89

1.04

1.19

1.50

1.82

0.5

0.7

0.89

1.04

1.20

1.49

1.78

2.08

2.39

3.01

3.64

0.8

1.1

1.34

1.57

1.80

2.23

2.67

3.12

3.58

4.51

5.45

1.1

1.4

1.78

2.09

2.40

2.97

3.56

4.16

4.77

6.01

7.27

1.4

1.8

2.23

2.61

3.01

3.72

4.45

5.20

5.96

7.51

9.09

1.7

2.2

2.67

3.13

3.61

4.46

5.34

6.24

7.16

9.02

10.91

2.0

2.6

3.12

3.65

4.21

5.21

6.23

7.28

8.35

10.5

12.73

2.3

2.9

3.56

4.17

4.81

5.95

7.12

8.32

9.54

12.0

14.54

2.6

3.3

4.01

4.70

5.41

6.69

8.01

9.36

10.7

13.5

16.36

2.9

3.7

4.45

5.22

6.01

7.44

8.90

10.4

11.9

15.0

18.18

3.2

4.0

4.90

5.74

6.61

8.18

9.79

11.4

13.1

16.5

20.00

3.5

4.4

5.34

6.26

7.21

8.92

10.6

12.4

14.3

18.0

21.81

3.8

4.8

5.79

6.78

7.81

9.67

11.5

13.5

15.5

19.5

23.63

4.1

5.1

6.23

7.30

8.41

12.4

14.5

16.7

21.0

25.45

Pipeline Segment Length (Feet)

4.4

5.5

6.68

7.83

9.02

11.1

13.3

15.6

17.8

22.5

27.27

SANITARY SEWER 333000 - 9

4.7

5.9

7.12

8.35

9.62

11.9

14.2

16.6

19.0

24.0

29.09

5.0

6.3

7.57

8.87

10.2

12.6

15.1

17.6

20.2

25.5

30.90

5.3

6.6

8.01

9.39

10.8

13.3

16.0

18.7

21.4

27.0

32.72

5.6

7.0

8.46

9.91

14.1

16.9

19.7

22.6

28.5

34.54

5.9

7.4

8.90

14.8

20.8

23.8

30.0

36.36

6.2

7.7

9.35

10.9

12.6

15.6

18.7

21.8

25.0

31.5

38.18

6.5

8.1

9.79

13.2

16.3

19.5

22.8

26.2

33.0

39.99

6.8

8.5

10.2

13.8

17.1

20.4

23.9

27.4

34.5

41.81

7.1

8.9

10.6

12.5

14.4

21.3

24.9

28.6

36.0

43.63

c. Test times for non-uniform pipe sizes and segments can be calculated with the appropriate formulas in ASTM C828.

END OF SECTION 333000