Specification_Package.pdf

DESCRIPTION/SPECIFICATIONS

FWS SPECIALIZED SPECIFICATIONS

WATER DRAIN LINE AND JUNCTION REPLACEMENT

AT

OURAY NATIONAL FISH HATCHERY

SPECIFICATION INDEX

DIVISION 31 – EARTHWORK

SECTION 312000 EARTH MOVING

SECTION 314100 SHORING AND BRACING

DIVISION 33 – UTILITIES

SECTION 030533 HIGH DENSITY POLYETHYLENE (HDPE) PIPE AND FITTINGS

EARTH MOVING 312000 - 1

SECTION 312000 - EARTH MOVING

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Excavating and backfilling for utility trenches.

1.2 DEFINITIONS

A. Backfill: Soil material used to fill an excavation.

1. Initial Backfill: Backfill placed beside and over pipe in a trench, including haunches to support sides of pipe.

2. Final Backfill: Backfill placed over initial backfill to fill a trench.

B. Bedding Course: Aggregate layer placed over the excavated subgrade in a trench before laying pipe.

C. Borrow Soil: Satisfactory soil imported from off-site for use as fill or backfill.

D. Excavation: Removal of material encountered above subgrade elevations and to lines and dimensions indicated.

E. Fill: Soil materials used to raise existing grades.

F. Structures: Buildings, footings, foundations, retaining walls, slabs, tanks, curbs, mechanical and electrical appurtenances, or other man-made stationary features constructed above or below the ground surface.

G. Utilities: On-site underground pipes, conduits, ducts, and cables, as well as underground services within buildings.

1.3 QUALITY ASSURANCE

A. Pre-excavation Conference: Conduct conference at Ouray National Fish Hatchery.

EARTH MOVING 312000 - 2

PART 2 - PRODUCTS

2.1 SOIL MATERIALS

A. General: Provide borrow soil materials when sufficient satisfactory soil materials are not available from excavations.

B. Subbase Material: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D 2940; with at least 90 percent passing a 1-1/2-inch sieve and not more than 12 percent passing a No. 200 sieve.

C. Base Course: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D 2940; with at least 95 percent passing a 1-1/2-inch sieve and not more than 8 percent passing a No. 200 sieve.

D. Engineered Fill: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D 2940; with at least 90 percent passing a 1-1/2-inch sieve and not more than 12 percent passing a No. 200 sieve.

E. Bedding Course: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D 2940; with 100 percent passing a 3/4-inch sieve and not more than 5 percent passing a No. 200 sieve.

PART 3 - EXECUTION

3.1 PREPARATION

A. Protect structures, utilities, and other facilities from damage caused by settlement, lateral movement, undermining, washout, and other hazards created by earth moving operations.

B. Protect and maintain erosion and sedimentation controls during earth moving operations.

3.2 EXCAVATION, GENERAL

A. Unclassified Excavation: Excavate to subgrade elevations regardless of the character of surface and subsurface conditions encountered. Unclassified excavated materials may include rock, soil materials, and obstructions. No changes in the Contract Sum or the Contract Time will be authorized for rock excavation or removal of obstructions.

1. If excavated materials intended for fill and backfill include unsatisfactory soil materials and rock, replace with satisfactory soil materials.

3.3 EXCAVATION FOR UTILITY TRENCHES

A. Excavate trenches to indicated gradients, lines, depths, and elevations.

EARTH MOVING 312000 - 3

B. Excavate trenches to uniform widths to provide the following clearance on each side of pipe or conduit. Excavate trench walls vertically from trench bottom to a minimum of 12 inches higher than top of pipe or conduit unless otherwise indicated.

1. Clearance: minimum 12 inches each side of pipe or conduit.

C. Trench Bottoms: Excavate and shape trench bottoms to provide uniform bearing and support of pipes and conduit. Shape subgrade to provide continuous support for bells, joints, and barrels of pipes and for joints, fittings, and bodies of conduits. Remove projecting stones and sharp objects along trench subgrade.

1. Excavate trenches minimum of 6 inches deeper than elevation required in rock or other unyielding bearing material, minimum of 4 inches deeper elsewhere, to allow for bedding course.

3.4 STORAGE OF SOIL MATERIALS

A. Stockpile borrow soil materials and excavated satisfactory soil materials without intermixing.

Place, grade, and shape stockpiles to drain surface water. Cover to prevent windblown dust.

1. Stockpile soil materials away from edge of excavations. Do not store within drip line of remaining trees.

3.5 UTILITY TRENCH BACKFILL

A. Place backfill on subgrades free of mud, frost, snow, or ice.

B. Place and compact bedding course on trench bottoms and where indicated. Shape bedding course to provide continuous support for bells, joints, and barrels of pipes and for joints, fittings, and bodies of conduits.

C. Place and compact initial backfill of subbase material, satisfactory soil, free of particles larger than 1 inch in any dimension, to a height of a minimum of 12 inches over the pipe or conduit.

1. Carefully compact initial backfill under pipe haunches and compact evenly up on both sides and along the full length of piping or conduit to avoid damage or displacement of piping or conduit. Coordinate backfilling with utilities testing.

D. Place and compact final backfill of satisfactory soil to final subgrade elevation.

3.6 COMPACTION OF SOIL BACKFILLS AND FILLS

A. Place backfill and fill soil materials in layers not more than 8 inches in loose depth for material compacted by heavy compaction equipment, and not more than 4 inches in loose depth for material compacted by hand-operated tampers.

B. Compact soil materials to not less than the following percentages of maximum dry unit weight according to ASTM D 698.

EARTH MOVING 312000 - 4

1. For utility trenches, compact each layer of initial and final backfill soil material at 95% of maximum dry density weight.

3.7 PROTECTION

A. Protecting Graded Areas: Protect newly graded areas from traffic, freezing, and erosion. Keep free of trash and debris.

B. Repair and reestablish grades to specified tolerances where completed or partially completed surfaces become eroded, rutted, settled, or where they lose compaction due to subsequent construction operations or weather conditions.

C. Where settling occurs before Project correction period elapses, remove finished surfacing, backfill with additional soil material, compact, and reconstruct surfacing.

1. Restore appearance, quality, and condition of finished surfacing to match adjacent work, and eliminate evidence of restoration to greatest extent possible.

3.8 DISPOSAL OF SURPLUS AND WASTE MATERIALS

A. Remove surplus satisfactory soil and waste materials, including unsatisfactory soil, trash, and debris, and legally dispose of them off Owner's property.

END OF SECTION 312000

06/10/2024 Section 314100

SHORING AND BRACING

TECHNICAL SPECIFICATIONS

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes: Work required for protection of an excavation and structures through shoring and bracing.

B. Related Work Specified In Other Sections Includes:

1. Section 312000 – EARTH MOVING

1.2 SUBMITTALS

A. CONTRACTOR's Submittals: All shoring and bracing shall be the responsibility of the CONTRACTOR to retain qualified design services for these systems, and to be completed with strict adherence to OSHA regulations. As part of the project requirements, submit complete design calculations and working drawings of proposed shoring and bracing which have been prepared, signed and sealed by a Licensed Professional Structural Engineer in the state of Utah, experienced in shoring, sheeting and bracing design, before starting excavation for jacking pits and structures.

Contracting Officer's Representative review of calculations and working drawings will be limited to confirming that the design was prepared by a licensed professional engineer and that a soil pressure diagram was used.

B. Trench boxes, shore boxes, and/or trench shields shall not be used as a type of trench protective system under this project.

1.3 REFERENCES

A. Design: Comply with all Federal and State laws and regulations applying to the design and construction of shoring and bracing.

B. N.B.S. Building Science Series 127 "Recommended Technical Provisions for

Construction Practice in Shoring and Sloping Trenches and Excavations.

1.4 QUALITY ASSURANCE

A. Regulatory Requirements: Do work in accordance with the U.S. Department of Labor Safety and Health Regulations for construction promulgated under the Occupational Safety Act of 1970 (PL 91-596) and under Section 107 of the Contract Work Hours and Safety Standards Act (PL 91-54), and the Utah Labor Commission Utah Occupational Safety and Health Division. The

CONTRACTOR shall also observe 29 CFR 1910.46 OSHA’s regulation for Confined Space Entry.

PART 2 PRODUCTS

2.1 MANUFACTURERS AND MATERIALS

A. Material Recommendations: Use manufacturers and materials for shoring and bracing as recommended by the Licensed Professional Engineer who designed the shoring and bracing.

1. Wood Materials: Oak, or treated fir or pine for wood lagging.

PART 3 EXECUTION

3.1 SHORING AND BRACING INSTALLATION

A. General: Provide safe working conditions, to prevent shifting of material, to prevent damage to structures or other work, to avoid delay to the work, all in accordance with applicable safety and health regulations. Properly shore and brace all excavations which are not cut back to the proper slope and where shown. Meet the general trenching requirements of the applicable safety and health regulations for the minimum shoring and bracing for trench excavations.

1. CONTRACTOR's Responsibility: Sole responsibility for the design, methods of installation, and adequacy of the shoring and bracing.

B. Arrange shoring and bracing so as not to place any strain on portions of completed work until the general construction has proceeded far enough to provide ample strength.

C. If Contracting Officer’s Representative is of the opinion that at any point the shoring or bracing are inadequate or unsuited for the purpose, resubmission of design calculations and working drawings for that point may be ordered, taking into consideration the observed field conditions. If the new calculations show the need for additional shoring and bracing, it should be installed immediately.

D. Monitoring: Periodically monitor horizontal and vertical deflections of shoring.

Contractor may submit these measurements for review.

E. Accurately locate all underground utilities and take the required measures necessary to protect them from damage. All underground utilities shall be kept in service at all times.

F. Permission for Removal: Obtain permission before the removal of any shoring or bracing. Retain the responsibility for injury to structures or to other property or persons from failure to leave such shoring and bracing in place even though permission for removal has been obtained.

3.2 SHORING LEFT IN PLACE FOR PROTECTION

A. Ordered Left in Place: In addition to shoring specified or shown to be left in place, the Contracting Officer’s Representative may order, in writing, any or all other shoring or bracing to be left in place for the purpose of preventing injury to the structures, pipelines or to other property or to persons.

1. Drive up tight any bracing remaining in place.

B. Right to Order: Do not construe the right to order shoring and bracing left in place as creating any obligation to issue such orders.

C. Payment: Shoring and bracing left in place, by written order, will be paid for under the appropriate Contract Items or where no such items exist, as changes in the work.

END OF SECTION 314100

HDPE SECTION 030533

SECTION 030533 - HIGH DENSITY POLYETHYLENE (HDPE) PIPE AND FITTINGS

PART 1

1.1 SCOPE

The work covered under this section consists of furnishing all equipment, labor, materials, and incidents necessary for the complete installation of water drain lines, junction and appurtenances, in strict accord-ance with applicable drawings and these specifications.

1.2 GENERAL

The water drain line shall be constructed in the locations and of the size shown on the drawings. Excavation, trenching and backfilling shall be in accordance with SECTION 312000 EARTH MOVING.

1.3 GENERAL

A. USE

a. High Density Polyethylene (HDPE) pipes/fittings shall be allowed for use as water drain lines where compatible with the specific conditions of the project.

B. MANUFACTURER

a. All HDPE pipe and fittings shall be from a single manufacturer, who is fully experi-enced, reputable and qualified in the manufacture of the HDPE pipe to be furnished. The pipe shall be designed, constructed and installed in accordance with the best practices and methods and shall comply with these Specifications. Qualified manufacturers shall be: Pacific Corrugated Pipe Co., Advanced Drainage Systems (ADS), or equal.

PART 2 -- PRODUCTS

2.1 MATERIALS FOR PIPE SIZES 4-INCH DIAMETER AND LARGER

A. High Density Polyethylene (HDPE) pipe shall comply with AWWA Specifications C906.

B. Dimensions and workmanship shall be as specified by ASTM F667. HDPE fittings and transitions shall meet ASTM D3350.

2.2 FITTINGS

A. All molded fittings and fabricated fittings shall be fully pressure rated to match the pipe pressure rating to which they are made. All fittings shall be molded or fabricated by the manufacturer. No Contractor fabricated fittings shall be used.

B. The manufacturer of the HDPE pipe shall supply all HDPE fittings and accessories as well as any adapters and/or specials required to perform the work as shown on the Draw-ings and specified herein.

C. All joint systems and fittings shall meet “watertight” requirements defined in ASTM D3212.

HDPE SECTION 030533

D. All transition from HDPE pipe to ductile iron or PVC shall be made per the approval of the HDPE pipe manufacturer’s recommendations and specifications.

PART 3 – EXECUTION

3.1 INSTALLATION

A. High Density Polyethylene (HDPE) Pipe shall be installed in accordance with the in-struction of the manufacturer, as shown on the Drawings and as specified herein.

B . HDPE shall be installed by Open Trench Construction. Care shall be taken in loading, transporting and unloading to prevent damage to the pipe. Pipe or fitting shall not be dropped. All pipe or fitting shall be examined before installation, and no piece shall be in-stalled which is found to be defective. Any damage to the pipe shall be repaired. If any defective pipe is discovered after it has been installed, it shall be removed and replaced with a sound pipe in a satisfactory manner by the contractor, at his own expense.

C. Under no circumstances shall the pipe or accessories be dropped into the trench.

D. Care shall be taken during transportation of the pipe such that it will not be cut, kinked or otherwise damaged. Ropes, fabric or rubber protected slings and straps shall be used when handling pipes. Chains, cables or hooks inserted into the pipe ends shall not be used. Two slings spread apart shall be used for lifting each length of pipe.

E. Pipes shall be stored on level ground, preferably turf or sand, free of sharp objects, which could damage the pipe. Stacking of the polyethylene pipe shall be limited to a height that will not cause excessive deformation of the bottom layers of pipes under anticipated tem-perature conditions. Where necessary due to ground conditions, the pipe shall be stored on wooden sleepers, spaced suitably and of such width as not to allow deformation of the pipe at the point of contact with the sleeper or between supports.

F. Pipe shall be stored on clean level ground to prevent undue scratching or gouging. The han-dling of the pipe shall be in such a manner that the pipe is not damaged by dragging it over sharp and cutting objects. The maximum allowable depth of cuts, scratches or goug-es on the exterior of the pipe is 5 percent of wall thickness. The interior pipe surface shall be free of cuts, gouges or scratches.

G. Sections of pipe with cuts, scratches or gouges exceeding 5 percent of the pipe wall thickness shall be removed completely and the ends of the pipeline rejoined.

HDPE 030533

a. All HDPE pipe must be at the temperature of the surrounding soil at the time of backfilling and compaction.

b. If a defective pipe is discovered after it has been installed, it shall be removed and replaced with a sound pipe in a satisfactory manner at no additional cost to the Owner. All pipe and fittings shall be thoroughly cleaned before installation, shall be kept clean until they are used in the work and when laid, shall conform to the lines and grades required.

Open Trench Installation:

1. SECTION 312000 – EARTH MOVING shall apply in its entirety.

2. Precautions shall be taken to prevent flotation of the pipe in the trench.

3. When moveable trench bracing such as moveable sheeting or shoring are used to support the sides of the trench, care shall be taken in placing and moving the supporting bracing to prevent movement of the pipe, or disturbance of the pipe bedding and the backfill.

3.2 CLEANING

A. At the conclusion of the work, thoroughly clean all of the new pipe lines to remove all dirt, stones, pieces of wood or other material which may have entered during the construction period by forcing a cleaning swab through all mains 4” or greater. Flushing velocities shall be a minimum of 2.5 feet per second. All flushing shall be coordinated with the Fish Hatchery. Debris cleaned from the lines shall be removed from the job site.

3 . 3 TESTING

A. Pressure testing shall be conducted per Manufacturer’s recommendations.

B. All HDPE water mains shall be disinfected prior to testing.

C. All HDPE mains shall be field-tested. Contractor shall supply all labor, equipment, material, gages, pumps, meters and incidentals required for testing. Each main shall be tested upon completion of the pipe laying and backfilling operations.

D. Pressure testing procedure shall be per Manufacturer’s recommendations.

E. All visible leaks are to be repaired regardless of the amount of leakage.

END SECTION