SOW Sewer Service Line (Pipe Bursting) - EsignAFB.pdf

Sewer Service Line (Pipe Bursting) Date: October 2024

Author: Andrew Banta Lift Station & Sewer Service Lines PE

STATEMENT OF WORK

1.01 SUMMARY OF WORK TO BE DONE BY CONTRACTOR

A. Furnish and install a gravity sewer service line and connection to community sewage system as shown on the drawings.

1.02 SITE LOCATION

A. 201 West Cummings Street, Henryetta, OK 74437

B. Latitude: 35.4438188 (N) Longitude: -95.9835202 (W)

C. Finding Directions: From Henryetta Homeland, go north 4 blocks to Cummings Street.

Go east 1 block to house on SW corner of 2nd and Cummings intersection.

1.03 CONSTRUCTION SCHEDULE

A. Contact the Project Oversight three business days before the start of any work.

B. Failure to perform work on the date scheduled shall require 24-hour notice for rescheduling the work.

C. Leave all work exposed until inspected and approved. Work not inspected before it is covered shall be re-exposed at the Contractor’s expense.

D. All work shall be performed Monday – Friday ONLY between the hours of 8:00 a.m. –

5:00 p.m. No work is to be performed on the weekends and/or federal holidays unless other work schedule arrangements are approved by the Project Oversight to do otherwise.

1.04 QUALITY ASSURANCE

A. Perform work under the direction of personnel licensed in the state of Oklahoma for plumbing.

B. Contractor must obtain plumbing/construction permit from City of Henryetta.

1.05 WARRANTY

A. Provide a minimum one-year warranty for all materials and labor, covering defects in the materials or workmanship.

1.06 GRAVITY SEWER SERVICE LINES

A. References (use latest versions)

1. ASTM D1785 Standard Specification for Rigid Poly(Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120

2. ASTM D2466 Standard Specification for Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40

B. PVC Pipe Material Requirements

1. ASTM D2241.

2. 4-inch nominal diameter.

3. Pressure rating: SCH40 (Class 200).

4. Twenty foot pipe lengths.

5. Solvent weld bell and spigot joints.

6. Recommended Manufacturer: Silver-Line Plastics or approved equal.

C. Fittings:

1. 4-inch nominal diameter.

2. Solvent sealed joints.

3. Shall not exceed 45⁰ bends.

4. Recommended Manufacturer: Charlotte Pipe and Foundry Co. or approved equal.

D. Two-Way Cleanouts:

1. 4-inch nominal diameter.

2. Compatible with sanitary sewerage piping material.

3. Sanitary tee.

4. PVC riser pipe with female adapter cap with square-nut threaded plug.

1.07 INSTALLATION

A. Contractor shall coordinate with the City of Henryetta and pay all necessary permit, inspection, and/or all other applicable fees associated with the work.

B. Chain link fencing will be taken down for site access and reattached to posts following construction activities by the Contractor.

1. This is an incidental item to the work and no separate payment will be made for this work.

C. Install sewer service lines and appurtenances in the locations, sizes and materials shown on the drawings.

1. Minimum slope for gravity flow sewer service lines is 1/8-inch per foot (1%).

2. Fittings are incidental to the sanitary sewer piping and shall not be paid separately.

D. Install cleanouts at the location specified in the drawings.

1. Install two-way cleanout such that the service can be rodded or snaked in either direction.

2. Install sanitary tee in the sanitary sewerage piping and connect riser pipe from the fitting to minimum 2 inches above existing grade.

3. Solvent seal the cleanout out plug to the end of the riser pipe.

E. Water and sewer service crossing and parallel installation.

1. Maintain a 30-inch horizontal separation between water and sewer services.

2. Maintain a 12-inch vertical separation for crossing water and sewer services. The water service is to be placed above the sewer service whenever possible.

3. Water service line splices or joints will not be permitted within 10 feet of a sewer line crossing.

F. Sewer service line shall be installed via open cut method from house to property line.

1. Existing concrete sidewalk next to home shall be undercut, without disturbing or damaging the concrete, to connect to cast iron sewer stubout of the house.

G. Sewer service line shall be installed via pipe bursting (directional drilling) method from property line to sanitary sewer piping to avoid disturbance to neighboring property.

1. Existing sewer service line is clay tile. There is a collapse underneath the neighboring property.

2. Directionally drill through existing sewer service line to sanitary sewer piping connection point.

3. Pull 4-inch SCH40 PVC back through drill hole to pipe burst the existing sewer service line.

H. Video inspection with CCTV equipment shall be conducted to ensure pipe integrity and grading of piping.

I. Connect to existing sanitary sewer piping with PVC wye, restrained saddle, or other approved fittings.

1. Utilize existing sewer connection if possible. Replace any defective material of the connection or install new connection while abandoning the old connection if beyond repair.

2. Connection fittings are incidental to the sanitary sewer tap and shall not be paid separately.

1.08 TRENCH

A. Depth: Minimum 12 inches to the top of the pipe for gravity sewer service lines.

B. Bottom: Free from stones greater than 3 inches, large dirt clods, and any frozen material.

C. Backfill: Restore trenches to initial grade.

1. Initial Backfill

a. Work material under and around the pipe to ensure full pipe support.

b. Hand tamp to prevent movement of the pipe during placement of material, avoiding contact between the pipe and compaction equipment.

c. Compact in lifts not to exceed 6 inches in loose measurement until 12 inches of backfill covers the top of the pipe.

2. Final Backfill

a. Compact in lifts not to exceed 12 inches in loose measurement with mechanical compacting equipment.

b. Compact all backfill to a density not less than the density of the surrounding undisturbed soil.

c. Mound the trench 3 -6 inches above existing grade to provide for settling.

d. Surplus materials shall be disposed of as directed by the Project Oversight.

e. Any excessive settlement, exceeding 3 inches, shall be corrected by the contractor.

D. Rock Excavation

1. Definition:

a. Solid rock: large masses or rock which cannot be excavated without hammering, ripping with a dozer, or other specialized equipment.

b. Loose rock: boulders and/or detached stone having a volume of one cubic yard or more.

2. Execution:

a. Rock excavation may be accomplished by any or all of the following methods:

ripping with a bull dozer or jack hammering.

b. Remove excavated rock from site in accordance with city, state, and federal regulations unless the property owner has requested to keep on property.

1.09 TESTING

A. Before joints are covered, test pipe for leaks.

B. Visually inspect all connections and fittings for leaks in the presence of the Project

Oversight.

C. Repair all leaks before backfilling.

D. Test system operation in presence of Project Oversight to ensure functionality of installed facilities.

1.10 CLOSEOUT ACTIVITIES

A. Restore the site as close as is practical to its original condition.

B. Any utility or facility damage is to be corrected in kind by the Contractor.

Date2_af_date: 2/25/25