Crow WTP Valves Technical Specs.docx

PART 2 – TECHNICAL PROVISIONS

Crow WTP Isolation Valves BI-15-N24

Table of Contents Technical Provisions

01100 - SUMMARY OF WORK

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes the following:

1. Work covered by the Contract Documents.

2. Use of premises.

3. Owner's occupancy requirements.

4. Work restrictions.

1.2 WORK COVERED BY CONTRACT DOCUMENTS

A. Project Identification:

E. The Work consists of the following:

1. The Work includes installation of new and replacement valves and pipe to improve operations of the Crow Agency community water system

1.3 USE OF PREMISES

A. General: Contractor shall have full use of premises for construction operations, including use of Project site, during construction period. Contractor's use of premises is limited only by Owner's right to perform work or to retain other contractors on portions of Project.

B. Use of Site: Limit use of premises to work in areas within the Contract limits or as directed by Engineer. Do not disturb portions of Project site beyond areas in which the Work is indicated.

1.4 OWNER'S OCCUPANCY REQUIREMENTS

A. Full Owner Occupancy: Owner will occupy site during entire construction period. Cooperate with Owner during construction operations to minimize conflicts and facilitate Owner usage. Perform the Work so as not to interfere with Owner's day-to-day operations. Maintain existing exits, unless otherwise indicated.

PART 2 - PRODUCTS (Not Used) PART 3 - EXECUTION (Not Used)

END OF SECTION

Summary of Work Section 01100 Technical Provisions - Page 1

01220 - UNIT PRICES

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes administrative and procedural requirements for unit prices.

B. Engineer shall confirm actual quantities installed prior to submission of payment request.

C. It is the responsibility of the Contractor to arrange for inspection of work for confirmation of quantities installed.

1.2 DEFINITIONS

A. Unit price is price per unit of measurement for materials or services. Unit prices include all necessary material, labor, delivery costs, installation, insurance, overhead, and profit require to provide item, in place and ready for use.

B. Incidental Items: Incidental items are those items not listed on a bid schedule which are considered to be subsidiary to and a part of an applicable contract bid item. No payment shall be made for incidental items. The following is a partial list of common incidental items. This is not intended to be an all-inclusive list of incidental items:

1. Construction Safety: Includes compliance to all applicable safety laws and regulations, as well as compliance with established construction safety practices.

2. Excavation, backfill, and compaction, unless specifically denoted.

3. Pipeline restraint: Includes mechanical restraint, thrust blocking, or other items necessary to prevent pipeline movement.

4. Removal, transportation, and legal disposal of excess material as necessary.

5. Cleanup of site.

6. Delivery, freight, and storage of materials and equipment.

PART 2 - PRODUCTS (Not Used)

PART 3 - EXECUTION

3.1 GENERAL

A. General units of measurement and abbreviations:

1. Each (ea): Payment per complete individual item installed.

2. Lump sum (ls): Payment of a single sum for completion of a set of items or activity in whole.

3. Linear feet (lf): Payment per foot, measured along the centerline of the item.

4. Vertical linear feet (vlf): Payment per foot, measured vertically.

5. Square feet (sf): Payment per area installed, measured along a flat plane of the item installed.

6. Square yard (sy): Payment per area installed, measured along a flat plane of the item installed.

7. Cubic yard (cy): Payment per loose cubic yard installed or excavated, unless otherwise noted.

8. Hour (hr): Payment per hour actively engaged in a specific activity or installation.

B. Additional clarification specific to some unit prices is provided below.

3.2 LIST OF UNIT PRICES

A. Mobilization: Includes transport of labor and equipment onto the jobsite, all setup and takedown, and all labor, equipment, and materials removal upon completion of the work. Contractor may apply for 50% of mobilization upon Notice to Proceed. The remaining payment can be made upon mobilization of adequate labor, equipment, materials, and supplies to begin work as scheduled.

B. Water Main: Water main is measured through incidental valves, fittings, and connections. Includes bedding, restraint, excavation, and compaction as required. Unless otherwise noted, connection to existing mains and pipelines is incidental.

C. 12-inch Altitude Valves: Altitude valves are measured per unit installed, includes the valve, appurtenances, restraint.

D. Gate Valves: Gate valves are measured per unit installed, includes the valve, valve box, restraint, excavation, bedding E. Check Valve Installation: Check valves are measured per unit installed, includes the valve, manhole vault, restraint, excavation, bedding. Unless otherwise noted, connection to existing mains and pipelines is incidental.

F. Check Valve Replacement: Check valves are measured per unit replaced, includes the valve, restraint, excavation, bedding. Unless otherwise noted, connection to existing mains and pipelines is incidental.

G. Check Valve Installation: Check valves are measured per unit replaced, includes the valve, restraint, excavation, bedding. Unless otherwise noted, connection to existing mains and pipelines is incidental.

H. Pavement patch: Patching includes cutting, removal, transport, and legal disposal of all waste material required to install new material. Additionally, subgrade, subbase, and base preparation and testing of these installations are incidental. Payment will not be made for patching beyond what would reasonably be required.

END OF SECTION

Unit Prices Section 01200 Technical Provisions - Page 3

01330 - SUBMITTALS

GENERAL

SUMMARY

This Section includes requirements for submittals.

GENERAL

Only submittals approved by Engineer may be used for construction.

Furnish copies of final submittals to others as necessary for performance of the Work. Show distribution on transmittal forms.

SUBMITTAL SCHEDULE

The Submittal Schedule (Section 01331) provides a list of required submittals, arranged in numerical order by the applicable Section.

Submittals sent directly to the Contracting Officer are not included in the schedule. These submittals are primarily in Sections numbered 01000 or less and may include the following:

Contractor’s Bid.

Insurance certificates and bonds.

Agreement between Owner and Contractor.

The schedule may be updated due to change orders or other modifications to the Contract.

Contractor is responsible for all submittal described in the Contract Documents, regardless of whether or not they are on the Submittal Schedule. Contractor shall inform the Engineer if any required submittals are missing from the schedule, and Engineer shall update the schedule accordingly.

The Submittal Schedule shall be used as a cover form for submittals as described by this Section.

PRODUCTS

ACTION SUBMITTALS

Product Data: Collect information into a single submittal for each element of construction and type of product or equipment.

Mark each copy of each submittal to show which products and options are applicable.

Include the following information, as applicable:

Manufacturer's written recommendations, installation instructions, and product specifications.

Wiring diagrams showing factory-installed wiring.

Printed performance curves, operating range diagrams, or other performance data.

Maintenance and operation manuals.

Compliance with specified referenced standards.

Shop Drawings: Prepare Project-specific information, drawn accurately to scale, and demonstrating compliance with Contract Documents. Include the following information, as applicable:

Dimensions, including notation of dimensions established by field measurement.

Setting diagrams, templates, and patterns.

Relationship to adjoining construction.

Wiring diagrams, differentiating between manufacturer and field installed wiring.

Contractor's Construction Schedule: Submit Construction Schedule for distribution prior to preconstruction conference. Submit updated Construction Schedule as necessary.

Subcontract List: If required, prepare a written summary identifying individuals or firms proposed for each portion of the Work, including those who are to furnish products or equipment fabricated to a special design.

INFORMATIONAL SUBMITTALS

Qualification Data: Prepare written information that demonstrates capabilities and experience of firm or person. Include lists of completed projects with project names and addresses, names and addresses of Engineers and owners, and other information specified.

Installer Certificates: Prepare written statements on manufacturer or testing agency's letterhead certifying that Installer complies with requirements in the Contract Documents.

Manufacturer, Product, and Material Certificates: Prepare written statements on manufacturer's letterhead certifying compliance with requirements in the Contract Documents.

Field Test Reports: Prepare reports written by a qualified testing agency, on testing agency's standard form, indicating and interpreting results of field tests performed for compliance with requirements in the Contract Documents.

Design Data: Prepare written and graphic information, including, but not limited to, performance and design criteria, list of applicable codes and regulations, and calculations.

Insurance Certificates and Bonds: Prepare written information indicating current status of insurance or bonding coverage. Include name of entity covered by insurance or bond, limits of coverage, amounts of deductibles, if any, and term of the coverage.

Material Safety Data Sheets (MSDSs)

EXECUTION

SUBMITTAL PREPARATION AND TRANSMISSION

Coordinate preparation and processing of submittals so that the Work will not be delayed. No extension of Contract Time will be authorized due to failure to transmit submittals in a timely manner.

Prepare submittals per the requirements of the applicable Section and as described in Part 2 of this Section.

Identify deviations from the Contract Documents on submittals. Note corrections and field dimensions.

Provide the following number of copies:

Attach a copy of the Submittals Schedule to each set of submittals transmitted to Engineer.

Fill out all identifying information at the top of the Schedule.

In the left column, mark the items contained within the submittal.

Review each submittal and check for coordination with other Work and compliance with Contract Documents prior to transmitting submittal to Engineer.

Allow ten business days for processing of each submittal, with time beginning on Engineer’s receipt of submittal.

ENGINEER'S ACTION

Engineer will review each submittal and make marks to indicate corrections or modifications required.

One of the following three columns will be marked for each item on the Submittal Schedule:

Approved as submitted Approved as noted Not approved Notes will be placed in the right column as applicable.

The Submittal Schedule will be returned to the Contractor, along with Action Submittals which have been marked up as appropriate.

Informational submittals will be returned if not approved.

Partial submittals are not acceptable and will be returned without review.

Submittals not required by the Contract Documents may not be reviewed and may be discarded.

END OF SECTION

Submittals Section 01330 Technical Provisions - Page 5

01331 – SUBMITTALS SCHEDULE

01310

Construction Schedule

01770

Operation and Maintenance Manual

01770

Record Drawings

Cast-in-Place Concrete

Metal Fabrications

Metal Fabrications

31200

Excavation Safety Plan

soil materials

soil proctor

soil compaction

Asphalt Installer

32122

Asphalt design mix

Water pipe

Valves and valve boxes

Precast concrete vaults

Pressure testing

01770 - CLOSEOUT

GENERAL

SUMMARY

This Section includes requirements for contract closeout, including the following:

Submittals.

Cleaning.

Warranties.

Inspection.

CLOSEOUT SUBMITTALS

General: Provide all submittals required by any specific Section of the Contract Documents.

Operation and Maintenance information: Submit all operation and maintenance information included in the packaging from the manufacturer regarding the materials installed.

Record Drawings: Provide Record Drawings described in Part 3 of this Section.

All Closeout Submittals must be received and approved prior to final payment.

SUBSTANTIAL COMPLETION

Preliminary Procedures: Before requesting inspection for Substantial Completion, complete the following.

Prepare a list of items to be completed and corrected.

Advise Owner of pending insurance changeover requirements.

Submit specific warranties, workmanship bonds, maintenance service agreements, final certifications, and similar documents.

Prepare and submit Project Record Documents, operation and maintenance manual.

Complete startup testing of systems.

Remove temporary facilities from Project site.

Complete final cleaning.

Touch up and otherwise repair and restore marred exposed finishes to eliminate visual defects.

Inspection for Substantial Completion:

Submit a written request for inspection for Substantial Completion.

Upon receipt, Engineer will schedule inspection with Contractor or notify contractor of work to be completed prior to inspection.

Upon completion of inspection, Engineer will determine whether the Work meets the requirements for Substantial Completion.

If Work meets the requirements for Substantial Completion, Engineer will prepare Certificate of Substantial Completion and “punch list” of items to be completed before Final Completion.

If Work does not meet the requirements for Substantial Completion, Engineer will inform Contractor of items that must be completed before certificate will be issued. Contractor shall request reinspection for Substantial Completion when items have been completed.

FINAL COMPLETION

Preliminary Procedures: Before requesting Final Inspection for Final Completion, complete the following:

Submit copy of punch list, certifying completion of each item.

Submit evidence of final, continuing insurance coverage complying with insurance requirements.

Instruct Owner's personnel in operation, adjustment, and maintenance of products, equipment, and systems.

Final Inspection:

Submit a written request for Final Inspection.

Upon receipt, Engineer will schedule Final Inspection with Contractor or notify contractor of work to be completed prior to inspection.

Upon completion of inspection, Engineer will determine whether the Work meets the requirements for Final Completion.

If Work meets the requirements for Final Completion. Engineer will issue Certificate of Final Inspection. Contractor shall prepare and submit Final Payment and Contractor’s Release of Claims.

If Work does not meet the requirements for Final Completion, Engineer will inform Contractor of items that must be completed before certificate will be issued. Contractor shall request reinspection for Final Completion when items have been completed.

MATERIALS: Not Applicable

EXECUTION

FINAL CLEANING

Clean Project site of rubbish, waste material, and other foreign substances.

Rake disturbed grounds that are not planted or paved to a smooth surface.

Removed tools. Equipment, machinery, and surplus materials from Project Site.

Clean exposed equipment surfaces.

RECORD DRAWINGS

General: Record Drawings are defined as a drawing showing the actual installation of facilities, showing changes from the plans and enough detail that the objects can be readily located in the future.

Ties: Measurements from permanent, easily located objects to an installed object.

Provide record data on a set of project drawings, with ties neatly and legibly drawn on the drawings.

Provide a minimum of two tie measurements to all buried objects installed under the Contract, including but not limited to:

Valves.

Water main fittings.

Connections to existing utility systems.

Hydrants.

Utility Crossings.

Control Boxes.

Service taps and valves.

Provide offset measurements for buried utilities installed parallel to roads.

END OF SECTION

Closeout Section 01770 Technical Provisions - Page 8

31200 - EARTHWORK

GENERAL

SUMMARY

This Section includes the following:

Site clearing Subbase and base course for asphalt paving.

Excavating and backfilling for utility trenches.

Temporary erosion and sediment control provisions.

DEFINITIONS

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

Subgrade: Surface or elevation remaining after completing excavation, or top surface of a fill or backfill immediately below subbase, drainage fill, or topsoil materials.

Unauthorized Excavation: Excavation below subgrade elevations without approval of Engineer. Unauthorized excavation shall be without compensation.

Fill: Materials used to raise existing grades.

Backfill: Material used to fill an excavation.

Base Course: Course placed between the subbase course and hot-mix asphalt paving.

Subbase Course: Course placed between the subgrade and base course for hot-mix asphalt pavement, or course placed between the subgrade and a cement concrete pavement or a cement concrete or hot-mix asphalt walk.

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

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

Drainage Course: Course supporting the slab-on-grade that minimizes upward flow of water.

Rock:

Solid Rock is large masses of rock which cannot be excavated without drilling, blasting, or the use of rippers.

Loose rock is boulders and/or other detached stones having an aggregate volume of one (1) cubic yard or more excavated from a single location. Boulders and detached stones excavated separately shall not be considered loose rock. Boulders shall be defined as rock with a diameter of one (1) foot or larger.

Structures: Man-made stationary features constructed above or below the ground surface.

Utilities: On-site underground pipes, conduits, ducts, and cables.

SUBMITTALS

Excavation Safety: If required by Engineer, Contractor shall submit written excavation safety plan.

Compaction testing: Contractor shall submit results of all compaction testing performed to Engineer within 24 hours of receipt from laboratory.

QUALITY ASSURANCE

Geotechnical Testing Agency Qualifications: An independent testing agency qualified according to ASTM E 329 to conduct soil materials testing, as documented according to ASTM D 3740 and ASTM E 548.

PROJECT CONDITIONS

Existing Utilities:

Contact utility-locator service for Project area before excavating.

Do not interrupt utilities unless permitted by Engineer, and then only after arranging to provide temporary utility services.

Notify Engineer not less than two days in advance of proposed utility interruptions.

TEMPORARY EROSION AND SEDIMENT CONTROL

EPA requirements: The Environmental Protection Agency has established a Construction General Permit (CGP) for small construction activities over 1 acre of aggregate disturbance, which includes filing of a Notice of Intent and (NOI) completion of a Stormwater Pollution Prevention Plan (SWPPP). The Contractor is responsible for filing the NOI and completing an SWPPP. The Contractor is also responsible for submitting a Notice of Termination (NOT) when coverage under the permit is no longer required as defined by EPA guidelines regarding the CGP.

Fees and fines: All fees and fines associated with compliance to the GCP and SWPPP are solely the responsibility of the Contractor.

References: Information regarding the CGP and SWPPP can be found at the following website: 2022 Construction General Permit (CGP) | US EPA.

SLOPING AND SHORING

Contractor is responsible for compliance with all applicable requirements of 29CFR1926 Subpart P regarding sloping, shoring, and shielding of excavation trenches.

Information regarding OSHA requirements can be found at the following website: http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=10930.

PRODUCTS

SOIL MATERIALS

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

Utility Trench backfill materials:

Bedding Course: Pipe bedding material shall be a well graded sand with particles no greater than 1/4-inch and with no more than five percent (5%) passing a number 200 sieve, and shall be free of organic matter, frozen material, debris and rubbish.

Initial backfill: Initial backfill material shall be a well graded material free of organic matter, frozen material, debris, rubbish and rocks greater than one (1) inch in size.

Final backfill: Final backfill material shall be free of frozen material, debris, and rubbish. Rocks larger than six (6) inches shall not be permitted within six (6) inches of the surface.

Detectable warning tape: Warning tape manufactured for identifying underground utilities, continuously inscribed with a description of the utility, with metallic core detectable by metal detector when buried up to 30 inches deep.

Satisfactory Soils for Backfill Material for Buildings and Other Structures:

Satisfactory Soils: ASTM D 2487 Soil Classification Groups GW, GP, GM, SW, SP, and SM, or a combination of these groups; free of rock or gravel larger than 3 inches in any dimension, debris, waste, frozen materials, vegetation, and other deleterious matter.

Unsatisfactory Soils: Soil Classification Groups GC, SC, CL, ML, OL, CH, MH, OH, and PT according to ASTM D 2487, or a combination of these groups 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.

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.

EROSION CONTROL MATERIALS

Posts: Wood or steel, 2” x 2” x 54” minimum.

Silt fencing: 15 mil thick screen fabric with a minimum of 120 pounds of grab tensile strength and an equivalent minimum opening size of 170. All seams shall be heat sealed or sewn.

Erosion fiber logs: Erosion fiber logs shall be made of aspen excelsior barbed, curled wooden fibers inside a tube of polyester netting, equal to American Excelsior Sediment Log.

EXECUTION

PREPARATION

Protect structures from damage caused by hazards created by earthwork operations.

Protect existing site improvements to remain from damage during construction.

Protect and maintain existing benchmarks and survey control points from disturbance during construction.

TEMPORARY EROSION AND SEDIMENTATION CONTROL

Provide temporary erosion and sedimentation control measures to prevent soil erosion and discharge of soil-bearing water runoff or airborne dust to adjacent properties per the requirements of the SWPPP plan.

Inspect, repair, and maintain erosion and sedimentation control measures during construction until permanent vegetation has been established.

Erosion bales: Place at right angles to the direction of flow. Secure with stakes as required for anchoring. Remove bales after the soil has stabilized or as directed by Engineer.

Silt fencing: Place fences following a constant elevation contour, in an arc or horseshoe shape with the ends pointing up towards the slope. Drive stakes into the soil to a depth that the silt fence touches the ground. Trench the silt fence into the soil to a depth to assure that runoff is forced through the fence rather than under it.

Erosion control fiber logs: Place perpendicular to the direction of flow in a drainage swale or ditch. Butt ends of logs up against each other and secure using zip ties. Place stakes every two feet along the downstream side of the erosion log and secure the log to the stakes. Ensure that logs are installed flush with the ground to force runoff through erosion logs, rather than over it.

Remove erosion and sedimentation controls and restore and stabilize areas disturbed during removal.

CLEARING AND GRUBBING

Remove obstructions, trees, grass, and other vegetation to permit installation of new construction, except trees, shrubs, and other vegetation indicated to be removed or relocated.

Cut minor roots and branches of trees to remain in a clean and careful manner where such roots and branches obstruct installation of new construction.

Grind or otherwise remove roots, obstructions, and debris to a depth of 18 inches below exposed subgrade.

Use hand methods for grubbing within tree protection zones.

Dispose of tree branches, roots, stumps, and other obstructions offsite.

Fill depressions caused by clearing and grubbing operations with satisfactory soil material unless other fill materials are indicated.

TOPSOIL STRIPPING

Remove sod and grass before stripping topsoil.

Strip topsoil to whatever depths are encountered in a manner to prevent intermingling with underlying subsoil or waste materials.

Stockpile topsoil materials away from edge of excavation without intermixing with subsoil. Grade and shape to drain surface water.

DEWATERING

Prevent surface water and ground water from entering or accumulating in excavations, ponding on prepared subgrades, and flooding Project site and surrounding area.

Protect subgrades from softening, undermining, washout, and damage by rain or water accumulation.

EXCAVATION, GENERAL

Do not use explosives.

Excavate to subgrade elevations. Material to be excavated will be classified as earth and rock. Do not excavate rock until it has been classified and measured by Engineer. The Contract Sum will be adjusted for rock excavation according to unit prices included in the Contract Documents. Changes in the Contract time may be authorized for rock excavation.

Earth excavation includes excavating pavements and obstructions visible on surface; underground structures, utilities, and other items indicated to be removed; together with soil, boulders, and other materials not classified as rock or unauthorized excavation.

Rock Excavation: Remove rock to lines and subgrade elevations indicated to permit installation of permanent construction without exceeding the following dimensions.

24 inches outside of concrete forms other than at footings.

12 inches outside of concrete forms at footings.

6 inches outside of minimum required dimensions of concrete cast against grade.

Outside dimensions of concrete walls indicated to be cast against rock without forms or exterior waterproofing treatments.

6 inches beneath bottom of concrete slabs on grade.

6 inches beneath pipe in trenches, and the greater of 24 inches wider than pipe or 42 inches wide.

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

EXCAVATION FOR UTILITY TRENCHES

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

Excavate trenches to uniform widths to provide the following clearance on each side of pipe or conduit. Provide clearance of not less than 12 inches each side of pipe or conduit.

Trench Bottoms: Excavate trenches 4 inches deeper than bottom of pipe elevation to allow for bedding course. Hand excavate for bell of pipe. In rock or otherwise unyielding bearing material, increase depth below bottom of pipe elevation to 8 inches.23 of 25

SUBGRADE INSPECTION

Notify Engineer, within 24 hours, when excavations have reached required subgrade.

If Engineer determines that unsatisfactory soil is present, continue excavation and replace with compacted backfill or fill material as directed.

Proof-roll subgrade below the building slabs and pavements with heavy pneumatic-tired equipment to identify soft pockets and areas of excess yielding. Do not proof-roll wet or saturated subgrades. Excavate soft spots, unsatisfactory soils, and areas of excessive pumping or rutting, as determined by Engineer, and replace with compacted backfill or fill as directed.

Authorized additional excavation and replacement material will be paid for according to Contract provisions for unit prices or changes in the Work, as applicable.

Reconstruct subgrades damaged by freezing temperatures, frost, rain, accumulated water, or construction activities, as directed by Engineer, without additional compensation.

UNAUTHORIZED EXCAVATION

Fill unauthorized excavation under foundations or wall footings by extending bottom elevation of concrete foundation or footing to excavation bottom, without altering top elevation. Lean concrete fill, with 28-day compressive strength of 2500 psi, may be used when approved by Engineer. Fill unauthorized excavation under other construction or utility pipe as directed by Engineer.

STORAGE OF SOIL MATERIALS

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. Stockpile materials away from the edge of excavations and the drip line of remaining trees.

BACKFILL

Place and compact backfill in excavations promptly, but not before completing the following:

Construction below finish grade including, where applicable, subdrainage, dampproofing, waterproofing, and perimeter insulation.

Surveying locations of underground utilities for Record Documents.

Testing and inspecting underground utilities.

Removing concrete formwork.

Removing trash and debris.

Removing temporary shoring and bracing, and sheeting.

Installing permanent or temporary horizontal bracing on horizontally supported walls.

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

UTILITY TRENCH BACKFILL

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

Bedding Course: Place and compact bedding course from a minimum of 4 inches below the pipe to the horizontal midpoint of the pipe diameter. Shape bedding course to provide continuous support for bells, joints, and barrels of pipes and for joints, fittings, and bodies of conduits.

Initial Backfill: After the pipe has been joined and properly bedded, the excavation shall be backfilled by hand to a depth of twelve (12) inches above the pipe with initial backfill material.

Trenches not beneath structures: Final backfill material shall be installed from the top of the initial backfill to the top of trench, unless otherwise noted.

Trenches beneath structures: Satisfactory soil material shall be placed and compacted from the top of initial backfill to subgrade to receive base, subbase, or other specified materials, unless otherwise noted.

Trenches beneath footings: Backfill trenches excavated under footings and within 18 inches of bottom of footings with satisfactory soil; fill with concrete to elevation of bottom of footings.

Provide 4-inch- thick, concrete-base slab support for piping or conduit less than 30 inches below surface of roadways. After installing and testing, completely encase piping or conduit in a minimum of 4 inches of concrete before backfilling or placing roadway subbase.

Install warning tape directly above utilities, 12 inches below finished grade, except 6 inches below subgrade under pavements and slabs.

SOIL FILL

Plow, scarify, bench, or break up sloped surfaces steeper than 1 vertical to 4 horizontal so fill material will bond with existing material.

Place and compact fill material in layers to required elevations as follows:

Under walks and pavements, use satisfactory soil material.

Place soil fill on subgrades free of mud, frost, snow, or ice.

SOIL MOISTURE CONTROL

Uniformly moisten or aerate subgrade and each subsequent fill or backfill soil layer before compaction to within 2 percent of optimum moisture content.

Do not place backfill or fill soil material on surfaces that are muddy, frozen, or contain frost or ice.

Remove and replace, or scarify and air dry otherwise satisfactory soil material that exceeds optimum moisture content by 2 percent and is too wet to compact to specified dry unit weight.

COMPACTION OF SOIL BACKFILLS AND FILLS

Place backfill and fill soil materials evenly on all sides of structures to required elevations, and uniformly along the full length of each structure.

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

Under structures, building slabs, steps, pavements and unpaved roads or parking areas, scarify and recompact top 12 inches of existing subgrade and each layer of backfill or fill soil material at 95 percent.

Under walkways, scarify and recompact top 6 inches below subgrade and compact each layer of backfill or fill soil material at 92 percent

GRADING

General: Uniformly grade areas to a smooth surface, free of irregular surface changes. Comply with compaction requirements and grade to cross sections, lines, and elevations indicated.

Provide a smooth transition between adjacent existing grades and new grades.

Cut out soft spots, fill low spots, and trim high spots to comply with required surface tolerances.

Site Grading: Slope grades to direct water away from buildings and to prevent ponding. Finish subgrades to required elevations within the following tolerances:

Pavements: Plus or minus 1/2 inch.

SUBBASE AND BASE COURSES

Place subbase and base course on subgrades free of mud, frost, snow, or ice.

On prepared subgrade, place subbase course under pavements and walks as follows:

Install separation geotextile on prepared subgrade according to manufacturer's written instructions, overlapping sides and ends.

Place base course material over subbase course under hot-mix asphalt pavement.

Shape subbase and base course to required crown elevations and cross-slope grades.

Place subbase and base course 6 inches or less in compacted thickness in a single layer.

Place subbase and base course that exceeds 6 inches in compacted thickness in layers of equal thickness, with no compacted layer more than 6 inches thick or less than 3 inches thick.

Compact subbase and base course at optimum moisture content to required grades, lines, cross sections, and thickness to not less than 95 percent of maximum dry unit weight according to ASTM D 698.

Pavement Shoulders: Place shoulders along edges of subbase and base course to prevent lateral movement. Construct shoulders, at least 12 inches wide, of satisfactory soil materials and compact simultaneously with each subbase and base layer to not less than 95 percent of maximum dry unit weight according to ASTM D 698.

FIELD QUALITY CONTROL

Testing Agency: Contractor will engage a qualified independent geotechnical engineering testing agency to perform field quality-control testing.

Allow testing agency to inspect and test subgrades and each fill or backfill layer. Proceed with subsequent earthwork only after test results for previously completed work comply with requirements.

Footing Subgrade: At footing subgrades, at least one test of each soil stratum will be performed to verify design bearing capacities. Subsequent verification and approval of other footing subgrades may be based on a visual comparison of subgrade with tested subgrade when approved by Engineer.

Testing agency will test compaction of soils in place according to ASTM D 1556, ASTM D 2167, ASTM D 2922, and ASTM D 2937, as applicable. Tests will be performed at the following locations and frequencies:

Paved and Building Slab Areas: At subgrade and at each compacted fill and backfill layer, at least 1 test for every 2000 sq. ft. or less of paved area or building slab, but in no case fewer than 3 tests.

Foundation Wall Backfill: At each compacted backfill layer, at least 1 test for each 100 feet or less of wall length, but no fewer than 2 tests.

Trench Backfill: At each compacted initial and final backfill layer, at least 1 test for each 150 feet or less of trench length, but no fewer than 2 tests.

When testing agency reports that subgrades, fills, or backfills have not achieved degree of compaction specified, scarify and moisten or aerate, or remove and replace soil to depth required; recompact and retest until specified compaction is obtained.

PROTECTION

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

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. Scarify or remove and replace soil material to depth as directed by Engineer, reshape, and recompact.

Where settling occurs before Project correction period elapses, remove finished surfacing, backfill with additional soil material, compact, and reconstruct surfacing. Restore appearance, quality, and condition of finished surfacing to match adjacent work, and eliminate evidence of restoration to greatest extent possible

DISPOSAL OF SURPLUS AND WASTE MATERIALS

Surplus satisfactory soil materials: Stockpile or spread soil onsite as directed by Engineer.

Waste material, including unsatisfactory soil, trash, and debris: Legally dispose of waste material off Owner’s property.

GENERAL EROSION AND SEDIMENT CONTROL PRACTICES:

Coordinate temporary and permanent erosion control measures to ensure economical, effective and continuous erosion control. Keep construction areas small. Divert drainage away from construction areas. Perform construction in and adjacent to rivers, streams, lakes or other waterways in such a manner as to avoid washing, sloughing or deposition of material into waterways which will result in undue or avoidable contamination, pollution or siltation of such waterways. Inspect and maintain erosion control materials to ensure its continued effectiveness. Remove sediment material captured by erosion control systems before the systems fail. Inspect and repair erosion control systems within 48 hours of rain event. Remove erosion control only after the area has stabilized and vegetation has developed to the extent that further erosion is unlikely.

END OF SECTION

Earthwork Section 31200 Technical Provisions - Page 14

32122 – ASPHALT PATCHING

GENERAL

SUMMARY

This Section includes patching of asphalt pavements, sidewalks, driveways, and other structures.

SUBMITTALS

Installer qualifications: Submit a statement of installer qualifications. Installer shall have successfully completed work similar to the Work described in this Section. Statement shall include a minimum of three successful installations, and shall be submitted with Contractor’s Bid.

Asphalt job mix design: Submit a copy of design proposed for the Work.

QUALITY ASSURANCE

Comply with “The Asphalt Handbook,” by the Asphalt Institute, unless otherwise noted.

Environmental limitations: Do not apply asphalt materials if substrate is wet, excessively damp, or if the following requirements are not met:

Prime and tack coats: Minimum surface temperature of 60°F.

Asphalt base course: Minimum surface temperature of 40°F and rising at time of placement.

Asphalt surface course: Minimum surface temperature of 60°F and rising at time of placement

PRODUCTS

AGGREGATES

Coarse aggregate: Sound, angular crushed stone, crushed gravel, or properly cured blast furnace slag, complying with ASTM D 692.

Fine aggregate: Sharp edged, natural sand or sand prepared from stone, gravel, properly cured blast furnace slag, or combinations thereof, complying with ASTM D 1073.

Mineral filler: Rock or slag dust, hydraulic cement, or other inert material complying with ASTM D 242.

COATINGS

Prime coat: ASTM D 2027, medium curing cutback asphalt, or asphalt emulsion prime confirming to state DOT requirements.

Tack coat: ASTM D 977, emulsified asphalt or ASTM D 2397, cationic emulsified asphalt, slow setting, factory diluted in water, of suitable grade and consistency for application.

ASPHALT BINDER MATERIAL

Provide asphalt binder material as recommended by the manufacturer for expected installation and service conditions.

COLD-MIX ASPHALT

Contractor may use asphalt cold mix if allowed by owner of asphalt roadway and approved by Project Engineer.

EXECUTION

PREPARATION

Cutting: Cut existing asphalt a minimum of 24” beyond the edge of utility trench. Cutting shall be in a straight line, parallel to the edge of the excavation. The preferred method of cutting shall be with a concrete or asphalt saw. Cut asphalt edges to form as regular a patch shape as practical, and should in general approximate a rectangle. Cutting may also be performed with an air hammer with a spade shaped bit at the discretion of the Project Engineer. Cut surfaces shall be protected from damage. Cut surfaces which are not straight or damaged shall be recut prior to installation.

Base material shall be placed beneath asphalt to a depth of 6” or the depth of adjacent base material, whichever is greater. Before paving, proof roll the base. Areas that yield excessively or crack under loads shall be excavated and replaced. Replacement of base material does not void compaction requirements.

Surface preparation: Assure the area is true to line and grade and dry. Clean the surface of all loose screenings and other loose or foreign material

COATINGS

Prime coat: Apply uniformly over surface of compacted base at a rate of 0.15 to 0.50 gal/sq. yd. Apply enough material to penetrate and seal, but not flood surface. Allow coat to cure per manufacturer’s instructions.

Tack coat: Apply uniformly to existing surfaces of previously constructed asphalt or Portland cement concrete paving, and to surfaces abutting new asphalt pavement. Apply at a rate of 0.05 to 0.15 gal/sq. yd. Allow tack coat to cure per manufacturer’s instructions:

PLACEMENT

The preferred method of spreading is by motor grader, however, in small areas, where mechanical finishing equipment is not practical, the mix may be spread and finished by hand. Perform hand placing carefully.

Uniformly distribute material to avoid segregation of coarse and fine aggregate. Broadcasting of material is not permitted.

During the spreading operation, loosen and uniformly distribute all material using lutes or covered rakes. Reject material that has formed into lumps and does not break down easily.

Following placing and before compacting, check the surface with templates and straightedges and correct all irregularities.

Compact paving as soon as placed hot-mix asphalt will bear weight. If allowed, compact cold-mix asphalt as soon a placed and leveled. Compact each course to a minimum of 92 percent of maximum theoretical density per ASTM D 2041.

Tolerances:

Thickness: Base courses shall have a tolerance of ±1/2”. Finished surface courses shall have a tolerance of ±1/4”.

Surface smoothness: Base courses shall have a tolerance of ±1/4”. Finished surface courses shall have a tolerance of ±1/8”.

REPAIRS

Remove areas that are defective or contaminated with foreign materials, cutting existing surfaces per the requirements of this Section. Replace with new asphalt compacted to specified density and surface tolerances.

DEMOLITION AND DISPOSAL:

Demolished asphalt should be stockpiled in an area which will not block driveways, damage existing improvements, or disrupt vehicular traffic.

Demolished asphalt shall be removed from site and legally disposed of as soon as is practical.

Asphalt Patching Section 32122 Technical Provisions - Page 16

33205 - WATER DISTRIBUTION PIPE AND APPURTENANCES

GENERAL

SUMMARY

This Section includes the following components for water distribution pipe, fittings, and appurtenances:

Water main pipe.

Isolation valves and boxes Pressure reducing, air release, and other miscellaneous valves.

Concrete vaults.

SUBMITTALS

Product Data: For the following:

Valves and valve boxes.

Shop Drawings:

Precast concrete vaults.

Field quality-control test reports.

Operation and Maintenance Data: For valves, hydrants, and other specialties.

QUALITY ASSURANCE

Regulatory Requirements:

Comply with requirements of utility company supplying water. Include tapping of water mains and backflow prevention.

Comply with standards of authorities having jurisdiction for potable-water-service piping, including materials, installation, testing, and disinfection.

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

Used materials shall not be acceptable for use on this project. Used materials are defined as materials which have previously been used to convey water.

DELIVERY, STORAGE, AND HANDLING

Preparation for Transport: Prepare valves, including fire hydrants, according to the following:

Ensure that valves are dry and internally protected against rust and corrosion.

Protect valves against damage to threaded ends and flange faces.

Set valves in best position for handling. Set valves closed to prevent rattling.

During Storage: Use precautions for valves, including fire hydrants, according to the following:

Do not remove end protectors unless necessary for inspection; then reinstall for storage.

Protect from weather. Store indoors and maintain temperature higher than ambient dew-point temperature. Support off the ground or pavement in watertight enclosures when outdoor storage is necessary.

Handling: Use sling to handle valves and fire hydrants if size requires handling by crane or lift. Rig valves to avoid damage to exposed parts. Do not use handwheels or stems as lifting or rigging points.

Deliver piping with factory-applied end caps. Maintain end caps through shipping, storage, and handling to prevent pipe-end damage and to prevent entrance of dirt, debris, and moisture.

Protect stored piping from moisture and dirt. Elevate above grade. Do not exceed structural capacity of floor when storing inside.

Protect flanges, fittings, and specialties from moisture and dirt.

Store plastic piping protected from direct sunlight. Support to prevent sagging and bending.

PROJECT CONDITIONS

Interruption of Existing Water-Distribution Service: Do not interrupt service to facilities occupied by Owner or others unless permitted under the following conditions and then only after arranging to provide temporary water-distribution service according to requirements indicated:

Notify Utility Manager no fewer than seven days in advance of proposed interruption of service.

Do not proceed with interruption of water-distribution service without Utility Manager written permission.

COORDINATION

Coordinate connection to water main with utility company.

PRODUCTS

WATER MAIN MATERIALS

PVC Pipe and Fittings:

Pipe shall conform to AWWA C900, Class 150, bell end with gasket.

Pipe with scratches, gouges, or grooves deeper than one tenth wall thickness shall be rejected. Undamaged portions of rejected pipe may be used if localized damage is cut out.

Fittings and fitting materials:

PVC Fabricated Fittings: AWWA C900, Class 150.

PVC Molded Fittings: AWWA C907, Class 150.

Push-on- or Mechanical- Joint, Ductile-Iron Fittings: AWWA C110 or AWWA C153.

Ductile Iron Pipe:

Pipe shall conform to AWWA C151: Mechanical-, Push-on-, or Grooved-Joint.

Fittings and fitting materials:

Glands, Gaskets, and Bolts: AWWA C111.

Gaskets: AWWA C111, rubber.

Flanges: ASME 16.1, Class 125, cast iron.

HDPE Pipe:

Pipe shall conform to AWWA C906, and manufactured from a PE 3408 resin listed with the Plastic Pipe Institute (PPI) as TR-4.

Fittings and fitting materials:

Ductile and Gray Iron fittings: AWWA C110 and AWWA C111.

Ductile Iron Compact Fittings: AWWA C153.

Fusion fittings: PE 3408 HPDE classification 34546C, approved for AWWA use. Pressure rating shall have nominal burst values of 3.5 times the working pressure of the fitting.

Thrust/restraint: Mechanical joint restraint rodding or manufacturer’s proprietary anchoring glands sized to meet all anticipated applied forces.

Miscellaneous pipe joining materials and fittings:

Pipe-Flange Gasket Materials: Suitable for chemical and thermal conditions of piping system contents; AWWA C110, rubber, flat face, 1/8 inch (3.2 mm) thick, unless otherwise indicated; and full-face or ring type, unless otherwise indicated.

Flange bolts and nuts: ASME B18.2.1 carbon steel.

PVC pipe solvent and primer: ASTM D 2564 and ASTM F 656.

Transition fittings: Same size as, compatible with, and with pressure rating equal to both ends to be joined.

Dielectric fittings: Assembly of copper alloy and ferrous materials with separating nonconductive material suitable for pressure and temperature.

Sleeves:

Steel Pipe sleeves: ASTM A53, type E, grade B, schedule 40, plain ends.

Cast-Iron sleeves: Cast or fabricated “wall pipe” equivalent to ductile iron pressure pipe, with plain ends and integral waterstop.

PVC sleeves: ASTM D 1785, schedule 40.

Grout: ASTM C 1107, Grade B, nonshrink dry hydraulic-cement grout.

Special pipe and fittings:

Ductile-Iron Rigid Expansion Joints: Three-piece, ductile-iron assembly consisting of telescoping sleeve with gaskets and restrained-type, ductile-iron, bell-and-spigot end sections complying with AWWA C110 or AWWA C153. Select and assemble components for expansion indicated. Include AWWA C111, ductile-iron glands, rubber gaskets, and steel bolts.

Ductile-Iron Flexible Expansion Joints: Description: Compound, ductile-iron fitting with combination of flanged and mechanical-joint ends complying with AWWA C110 or AWWA C153. Include two gasketed ball-joint sections and one or more gasketed sleeve sections. Assemble components for offset and expansion indicated.