Specifications.pdf

WATER LINE REPLACEMENT PROJECTS

LAKE CONASAUGA RECREATION AREA

POCKET RECREATION AREA

SPECIFICATION INDEX

DIVISION 1 - GENERAL REQUIREMENTS

01010 - SUMMARY OF WORK

01575 – EROSION AND SEDIMENTATION CONTROL

DIVISION 2 - SITE WORK

02070 - SELECTIVE DEMOLITION

02110 - CLEARING

02221 - TRENCHING, BACKFILLING, AND COMPACTING

02485 - SEEDING

02511 - ASPHALT PAVEMENT PATCHING

02515 - GRAVEL ROAD PATCHING

DIVISION 3- CONCRETE

03100 - CONCRETE FORMWORK

03200 - CONCRETE REINFORCEMENT

03300 - CAST-IN-PLACE CONCRETE

DIVISION 15 - MECHANICAL

15010 - BASIC MECHANICAL REQUIREMENTS

15011 - WELL ABANDONMENT AND CLOSURE

15060 - PIPE, PIPE FITTINGS, VALVES AND HYDRANTS

01010 - SUMMARY OF WORK

PART 1 - GENERAL

A. Work covered by Contract Documents

1. In accordance with the contract provisions, the contractor is to provide the replacement of the existing water distribution system from the reservoir throughout the campground. Work includes the installation of pipes, fittings, valves, hydrants and appurtenances in accordance with the drawings, specifications, and other provisions of the contract.

2. Specification Organization. The specifications are organized into one bound volume. The internal separation for these specifications into divisions and sections is for convenience only and is not intended to establish limits of work.

B. Project Locations:

LAKE CONASAUGA RECREATION AREA – Take US 411 north from Chatsworth, GA, for 4 miles; turn right (east) at traffic light in Eton; follow Forest Service Road 18 east for 10 miles; turn left (northeast) on Forest Service Road 68 for 10 miles.

POCKET RECREATION AREA – Take GA 136 east from Lafayette, GA, for 13.5 miles; 0.5 miles east of Villanow, turn right (south) on county road (Pocket Road) for 7 miles.

C. Site Visit:

Contractor shall visit site and verify all dimensions and site conditions prior to submitting a bid.

D. Schedule of Work:

1. Actual construction shall not begin until after September 7, 2010, unless otherwise agreed to by the Contracting Officer.

2. Contractor shall coordinate campground construction with COR.

3. Contractor must fully complete all work at one campground, before starting construction on another campground.

E. Whenever the words "Contracting Officer" or "COR" appear in these specifications they shall be interpreted to mean the Contracting Officer, a duly appointed successor, or a duly appointed representative.

F. This contract is subject to the "Buy-American" Act. Only domestic materials will be used.

G. Deviations - Any deviation required by the State shall also be required by this contract. Any deviation permitted by the State shall need approval from the COR before being implemented.

01010 - 1

01050 FIELD ENGINEERING

The locations of all proposed new work relative to existing features are indicated on the construction drawings.

01300 SUBMITTALS

A. The contractor shall be required to furnish submittals on items intended for use other than the brand names listed in the specifications. Submittals shall be made within 15 days prior to commencing any work that relates to a respective submittal.

B. The contractor shall submit five sets of the manufacturer's description of all "or equals" proposed in lieu of name brands specified. This description shall include the following:

1. Product name and model number

2. Manufacturer

3. Product description

4. Technical data

5. Warranty

C. In accordance with the cited references of the Federal Acquisition Regulation (FAR)

Clause 52.236-21, the contractor shall be required to furnish the following to the COR prior to commencing any work that relates to a respective submittal (5 copies of all submittals required):

1. All pipe (HDPE, PVC, Ferrous)

2. All valves (Gate, Ball, Pressure Reducing, Check, Air Release)

3. Valve boxes; meter boxes

4. Chlorinators

5. Pre-cast concrete potable water tanks

6. Float valves and switches

7. Water meters

8. Campground hydrants (Camper and staff styles)

9. Asphalt pavement design mix, prime and tack coats (if required) 10.Pipe Detector tape 11.Seed mix and fertilizers 12.Erosion control products including silt fence and mat

D. Other submittals (in quantities indicated) are required as identified in these specifications.

01010 - 2

E. As-Built Drawings. The contractor shall maintain a set of the contract drawings depicting as-built conditions resulting from Government authorized changes. The drawings shall be maintained in a current condition. Changes from the original contract drawings shall be indicated in red on the drawings. At the completion of the contract work, as-built drawings shall be submitted to the Engineer.

01310 - SCHEDULES AND REPORTS

The Contractor shall keep available and furnish the Forest Service with daily records of progress. If the Contractor falls behind the approved schedule, the Contractor shall take steps necessary to improve its progress without any additional cost to the government.

01500 - TEMPORARY FACILITIES AND CONTROL

Toilet facilities are available at Cooper Creek, DeSoto Falls and Pocket Recreation Areas, but not at the other project sites.

01532 - PROTECTION OF PROPERTY

A. THIS IS A VISUALLY SENSITIVE AREA. Except as directed otherwise by the

COR the Contractor shall protect all shrubbery and trees during the progress of work.

B. The Contractor shall take care to prevent deep rutting or excessive soil movement while working at the site. Upon completion of the project, the contractor shall restore the site as nearly as practicable to the original condition found upon commencement of work.

01710 - CLEAN-UP

The Contractor shall keep the construction area, including storage areas, free from accumulations of waste material, and rubbish. Upon completion of the construction, the Contractor shall leave the premises in a clean, neat condition.

01010 - 3

01575 – EROSION AND SEDIMENTATION CONTROL

PART 1 GENERAL

1.01 SECTION INCLUDES

A. Prevention of erosion due to construction activities.

B. Prevention of sedimentation of waterways, open drainage ways, and storm sewers due to construction activities.

C. Restoration of areas eroded due to insufficient preventive measures.

D. Compensation of government for fines levied by authorities having jurisdiction due to non-compliance by contractor.

1.02 REFERENCE

Best Management Practices standard: State of Georgia, Erosion and Sedimentation Control Manual.

1.03 PERFORMANCE REQUIRMENTS

A. Comply with all requirements of the US Environmental Protection Agency for erosion and sedimentation control.

B. Comply with all requirements of local issuing authority for erosion and sedimentation control.

C. Best Management Practices Standard: EPA 832-R-92-005.

D. Best Management Practices standard: All erosion and sedimentation control measures and BMP’s must be in accordance with the state of Georgia Erosion and Sedimentation Control Act of 1975. Use latest edition of the state of Georgia Erosion and Sedimentation Control Manual.

E. Do not begin clearing, grading, ditching, or excavation until applicable permits have been obtained. Furnish all documentation required to obtain required permits.

1. Government will obtain and pay for all required permits required by local issuing authorities.

2. Government will withhold payment to contractor equivalent to all fines resulting from non-compliance with applicable regulations.

F. Timing: Put preventive measures in place as soon as possible after disturbance of surface cover and before precipitation occurs. All erosion and sedimentation control measures must be installed prior to initiation of construction activity.

01575 – 1

G. Storm Water Runoff: Control increased storm water runoff doe to disturbance of surface cover due to construction activities for this project.

Prevent runoff into storm and sanitary sewer systems including open channels, in excess of actual capacity or amount allowed by authorities having jurisdiction, whichever is less.

H. Erosion on site: Minimize wind, water and vehicular erosion of soil on project site due to constriction activities for this project.

1. Control movement of sediment and soil from temporary stockpiles of soil.

2. Prevent development of ruts due to equipment and vehicular traffic.

3. If erosion occurs due to non-compliance with these requirements, restore eroded areas at no cost to the government.

I. Erosion off site: Prevent erosion of soil and deposition of sediment on other properties caused by water leaving the project site due to construction activities.

1. Prevent windblown soil from leaving the project site.

2. Prevent tracking of mud onto public roads outside the site.

3. Prevent mud and sediment from flowing onto sidewalks and pavements.

4. If erosion occurs due to non-compliance with these requirements, restore eroded areas at not cost to government.

J. Sedimentation of waterways on site: Prevent sedimentation of waterways on the project site, including rivers, streams, lakes, ponds, open drainage ways, storm sewers, and sanitary sewers.

1. If sedimentation occurs, install or correct preventive measures immediately at no cost to the government. Remove deposited sediments;

comply with authority having jurisdiction.

2. If sediment basins are used as temporary preventive measures, pump dry and remove deposited sediment after each storm event.

K. Sedimentation of waterways off site: Prevent sedimentation of waterways on the project site, including rivers, streams, lakes, ponds, open drainage ways, storm sewers, and sanitary sewers.

1. If sedimentation occurs, install or correct preventive measures immediately at no cost to the government. Remove deposited sediments;

comply with authority having jurisdiction.

L. Open water: Prevent water that could become stagnant.

M. Maintenance: Maintain temporary preventive measures until permanent measures have been established.

01575 – 2

PART 2 PRODUCTS

2.01 MATERIALS

A. Mulch: Use Profile Futerra F4 netless erosion control re-vegetation blanket or approved equal.

B. Grass seed for temporary cover.

C. Bales: Air dry, rectangular straw bales.

1. Cross section: 14 by 18 inches, minimum

2. Bindings: wire or string

D. Bale stakes: One of the following, minimum 3 feet long:

1. Steel U- or T-section, with minimum mass of 1.33 lb per linear foot.

2. Wood, 2 by 2 inches in cross section.

E. Silt Fence Fabric: Polypropylene geotextile resistant to common soil chemicals, mildew, and insects; non-biodegradable; in the longest lengths possible; fabric including seams with the following minimum average roll lengths:

1. Average Opening Size: 30 US Std. Sieve, maximum, when tested in accordance with ASTM D 4751.

2. Permittivity: 0.05^ -1, minimum, when tested in accordance with ASTM D 4491.

3. Ultraviolet Resistance: Retaining at least 70 percent of tensile strength, when tested in accordance with ASTM D 4355 after 500 hours exposure.

4. Tensile Strength: 100 lb-f, minimum, in cross machine direction; 124 lb-f, minimum, in machine direction; when tested in accordance with

ASTM D 4632.

5. Elongation: 15 to 30 percent, when tested in accordance with ASTM D 4632.

6. Tear strength: 55 lb-f, minimum, when tested in accordance with ASTM D 4533.

7. Color: Manufacturer’s standard with embedment and fastener lines preprinted.

8. Manufacturers:

A. BP Amoco B. TC Marifi C. Synthetic Industries

F. Silt Fence posts: Use steel U- or T- section, with a minimum mass of 1.33 lb per linear foot, minimum 5’ long.

01575 – 3

PART 3 EXECUTION

3.01 EXAMINATION

A. Examine site and identify the existing features that contribute to erosion resistance; maintain such existing features to greatest extent possible.

3.02 PREPARATION

A. Schedule work so that soil surfaces are left exposed for the minimum of time.

3.03 SCOPE OF PREVENTIVE MEASURES

A. In all cases, if permanent erosion resistant measures have been installed, temporary measures are not required.

B. Linear Sediment Barriers: made of silt fences.

1. Provide linear sediment barriers:

a. Along downhill perimeter edge of disturbed areas including soil stockpiles

b. Along the top of the slope or top bank of drainage channels and swales that traverse disturbed areas.

c. Along the toe of cut slopes and fill slopes.

d. Perpendicular to flow across the bottom of existing and new drainage channels and swales that traverse disturbed areas or carry runoff from disturbed runoff; space a maximum of 200 feet apart.

e. Across the entrance to culverts that receive runoff from disturbed areas.

2. Space sediment barriers with the following maximum slope length upslope from barrier:

a. Slope of less than 2 percent: 100 feet.

b. Slope between 2 and 5 percent: 75 feet.

c. Slope between 5 and 10 percent: 50 feet.

d. Slope between 10 and 20 percent: 25 feet.

e. Slope over 20 percent: 15 feet.

C. Storm Drain Curb Inlet Sediment Trap: Protect each curb inlet using one of the following measures:

1. Filter fabric wrapped around hollow concrete blocks blocking entire face area; use one piece of fabric wrapped at least 1-1/2 times around concrete blocks and secures to prevent dislodging; orient cores of blocks so passes into inlet.

2. Straw bale row blocking entire inlet face area; anchor into pavement.

E. Temporary Splash Pads: Stone aggregate over filter fabric; size to suit application; provide at downspout outlets and storm water outlets.

F. Soil Stockpiles: Protect using one of the following measures:

1. Cover with polyethylene film, secured by placing soil on outer edges.

G. Temporary Seeding: Use wherever vegetated cover is required.

01575 – 4

3.04 INSTALLATION

A. Silt Fences:

1. Where slope gradient is greater than 3:”1 and vertical height of slope between barriers is more than 20’, use nominal 32” high barriers, with woven wire reinforcement and steel posts (Type C) spaced at 4 feet maximum, with fabric embedded at least 6 “ into the ground.

2. Install with top of fabric at nominal height and embedment as specified.

3. Embed bottom of fabric in a trench on the upslope side of fence, with 2” of fabric laid flat on bottom of trench facing upslope; backfill trench and compact.

4. Do not splice fabric width; minimize fabric splices; splice at posts only;

overlapping at least 18”, with extra post.

5. Fasten fabric to steel posts using wire, nylon cord or integral pockets.

B. Straw Bale Rows:

1. Install bales in continuous rows with ends butting tightly, with one bale at each end of row turned uphill.

2. Install bales so that bindings are not in contact with the ground.

3. Embed bales at least 4” into the ground.

4. Anchor bales with at least 2 stakes per bale, driven at least 18” into the ground; drive first stake in each bale toward the previously placed bale to force bales together.

5. Fill gaps between edges with loose straw wedged tightly.

6. Place soil excavated for trench against each bale on the upslope side of row, compacted.

3.05 MAINTENANCE

A. Inspect preventive measures weekly, within 24 hours, after any storm that produces at least .5” of rain, and daily during prolonged rainfall.

B. Repair deficiencies immediately.

C. Silt Fences:

1. Promptly replace fabric that has deteriorated unless need for fence has passed.

2. Remove silt deposits that exceed one third of the fence height.

3. Repair fences that are undercut by runoff or otherwise damaged, whether by runoff or by other causes.

01575 – 5

D. Hay Bales Rows:

1. Promptly replace bales that fall apart unless need has passed.

2. Remove silt deposits that exceed one half of the bale height.

3. Repair bales that are undercut by runoff or otherwise damaged, whether by runoff or by other causes.

3.07 CLEAN UP

A. Remove all silt fences after COR approval. Dispose of materials off government property.

B. Remove temporary measures after permanent measures have been installed.

C. Where removal of temporary measures would leave exposed soil, shape surface to an acceptable grade and finish to match adjacent ground surfaces.

01575 – 6

02070 - SELECTIVE DEMOLITION

This section covers demolition of the portions of the water distribution system which are being replaced. Demolition debris shall be removed and properly disposed of by the contractor, off government property.

PART 2 - PRODUCTS

The material to be removed consists of concrete structures; existing vitrified clay, galvanized steel and plastic piping; and appurtenances which must be removed to install new pipe and appurtenances. Existing buried lines and valves may be abandoned in place unless otherwise specified. Existing lines exposed at creek crossings and no longer operational shall be removed. Abandoned wells and hand pumps shall be demolished in accordance with Georgia EPD standards, the contract drawings and these specifications.

PART 3 - EXECUTION

Remove specified piping and components carefully without damaging existing components of the water distribution system which will remain in use. The drawings provided show the locations of existing water lines, and road structures. Unnecessary damage to existing utilities and structures will be repaired at the contractor's expense.

02110 - CLEARING

PART 1 - GENERAL

Work included in this section covers clearing, grubbing, and removal of all vegetation as required to construct waterline trenches for the replacement of portions of the existing water collection system.

PART 2 - PRODUCTS - None

PART 3 - EXECUTION

Clearing and grubbing shall consist of clearing the designated area of all trees required to be removed, brush and other vegetation, rubbish and all objectionable material, and shall include grubbing stumps larger than 3" in diameter and matted roots. All vegetative debris shall be disposed by scattering. Scattering is the primary method except where vegetation to be disposed becomes excessive, in which case piling will be directed by the government.

02070 - 1

02221 - TRENCHING, BACKFILLING AND COMPACTING

Work included in this section covers all trenching and backfilling of all trenches.

PART 2 - PRODUCTS

Plastic identification tape shall be "Detectotape" as manufactured by:

Reef Industries, Incorporated P. O. Box 750250 Houston, Texas 77275-0250 or approved equal and shall read the equivalent of "buried water line". The tape shall be of 3" minimum width and have the capability of being detected by a metal detector installed over non-metallic pipe.

PART 3 - EXECUTION

A. Follow OSHA 1926 Subpart P – Excavations, for all trench work.

1. Slope banks of excavations deeper than 48” to an angle of repose or less until shored.

B. Trenches shall be excavated through any or all materials regardless of natural substances.

1. A firm, full length support shall be formed for all underground pipes.

2. Where the excavated material is rock or other unsatisfactory bedding material, the trench shall be excavated below the final grade of the pipe invert a distance of 6".

The trench shall then be backfilled to the grade of the pipe with select backfill.

3. Notify COR of unexpected subsoil conditions and discontinue affected work in area until notified to resume work.

4. Pipe curving shall be installed according to manufacturer's recommendations.

5. If the bottom of any excavation is taken out beyond the limits shown on the plans, it shall be refilled at the contractor's expense with an acceptable material compacted to the density of adjacent undisturbed material.

B. The contractor shall take all precautions to assure that water does not accumulate in trenches while utility lines are being constructed.

02221 – 1

C. All backfill material shall be loose earth and shall be free from clods, roots, and stones over 2" in size. Select backfill material shall be sand, or inorganic soils free from clods, roots, and stones over 1/2" in size.

1. Any pipe damaged by backfill operations shall be replaced by new pipe.

2. Identification tape shall be buried 12" to 18" below grade and run continuously above all non-metallic pipe.

3. Trenches shall be bedded to the proper elevation for installing the pipe with select backfill.

4. After the pipe is installed, select backfill shall be placed beside and on top of the pipe in layers not exceeding 6" and compacted.

5. Additional backfill shall be deposited and compacted to a density to or greater than that of the existing soil.

6. All trenches shall be mounded the amount shown on the drawings to complete the backfilling operation.

D. Backfilling shall not be performed on any section of pipeline without prior approval by the COR.

02485 - SEEDING

This section covers the requirements for the seeding of all disturbed areas of the construction site.

PART 2 - PRODUCTS

A. Grass seed shall be mixed and guaranteed by the dealer to be as follows:

Common Name % by Weight %Purity %Germination Rate (lbs/acre)

Annual Rye Grass 25% 90% 90% 5 Common Bermuda * 25% 90% 90% 5 Orchard Grass 50% 90% 90% 10

* Use hulled Bermuda if seeding takes place between March 1 and July 1; otherwise use unhulled Bermuda.

02221 - 2

B. Commercial fertilizer shall be complete fertilizer, 10-10-10, and shall conform to the applicable State fertilizer laws. Fertilizers shall be uniform in composition, dry and free flowing, and shall be delivered to the site in the original, unopened containers, each bearing the manufacturer's guaranteed analysis. Any fertilizer which becomes caked or otherwise damaged, making it unsuitable for use, will not be accepted.

C. Mulch may be straw, not hay. Straw shall be from grain crops that are free from noxious weeds, mold, or other objectionable material. Straw mulch shall be in air-dry condition and suitable for placing with mulch blower equipment. Apply mulch sufficiently to cover all bare soil and meet COR approval. Note, any soil disturbed within 50 feet of a stream must be mulched before the end of the day to prevent soil erosion from entering stream.

PART 3 - EXECUTION

A. Time of Seeding

Seeding shall be accomplished within 7 days of completion of the waterline installation work. Seeding shall be conducted under favorable weather conditions.

No seeding shall be done when soil is excessively wet, frozen, or partially frozen.

B. Seed Bed Preparation

The fertilizer shall be evenly spread at a rate of 900 pounds per acre and mixed into the top 2" of the soil. After mixing of the fertilizer, the seed shall be uniformly spread on the entire area at the rate of 75 pounds per acre of the specified mixture.

Mulch shall be applied immediately after seed, 1/4 to 1/2 inch thick over all areas.

02221 - 3

02511 ASPHALT PAVEMENT PATCHING

1. DESCRIPTION

This work consists of patching existing paved road and driveway crossings. The work includes preparing the area to be patched, furnishing and placing all necessary materials and work.

2. REQUIREMENTS

A. Existing materials shall be removed to a depth of approximately 34 inches. Prior to

Contractor placing any backfill materials, the Government will determine if removed materials are suitable for use as backfill. Backfill will be compacted in 6 inch lifts using a mechanical compactor.

B. Prepared roadway crossings shall be patched or barricaded immediately. The edges of the prepared hole shall be sawcut to form a vertical face in unfractured asphalt surfacing.

C. The prepared hole shall generally be rectangular in shape and cleaned of all loose material. The bottom and sides shall be sprayed with emulsified asphalt at a temperature of 325-375 degrees Fahrenheit at the rate ordered by the Government.

No bituminous mixture shall be placed until the prepared surface is approved by the Government.

D. The Type E asphalt mix shall be placed at temperature range between 175 and 250 degrees Fahrenheit. No asphalt shall be used if its temperature is less than 180 degrees Fahrenheit. No patching may be done if the road surface temperature is less than 45 degrees Fahrenheit. Each layer shall be compacted thoroughly with hand tampers, mechanical tampers, or rollers. Bituminous mixture shall be distributed uniformly in three layers. Each layer not to exceed two (2) inches compacted depth.

Total asphalt thickness, 6”.

E. The final layer shall be compacted with an eight (8) to ten (10) ton steel roller or comparable vibratory roller. Upon completion, the compacted patch shall be one quarter (1/4) inch above the level of the adjacent pavement.

02511 - 1

02515 GRAVEL ROAD PATCHING

1. DESCRIPTION

This work consists of patching roadway crossings. The work includes preparing the area to be patched, furnishing and placing all necessary materials and work.

2. REQUIREMENTS

A. Roadway crossings shall be patched or barricaded immediately.

B. Existing materials shall be removed to a depth of approximately 34 inches. Prior to Contractor placing any backfill materials, the Government will determine if removed materials are suitable for use as backfill. Backfill will be compacted in 6 inch lifts using a mechanical compactor.

C. The carrier pipe shall be sleeved with sufficient diameter galvanized steel pipe.

Bushings shall be inserted at ends of galvanized steel pipe to protect HDPE pipe.

D. Gravel roadbed shall be replaced with material similar to existing road. Gravel shall be placed in compacted 6 inch layers.

3. DISPOSAL

All materials removed from roadway patching operations shall be removed to a disposal site approved by the COR or shown on the drawings.

02515 - 1

03100 - Concrete Formwork

Part 1 Products

A. Forms shall be wood, plywood, hard board, or metal and shall be approved by

COR.

B. Form oil shall be non-staining.

C. Expansion joint filler shall be pre-molded or pre-shaped and made of asphalt fiber.

Part 2 Execution

A. Forms shall be built tightly, in proper alignment, and strong enough to resist the stresses of concrete placement without deformation.

B. Forms shall be constructed to produce the required concrete surface.

C. Expansion and contraction joints shall be formed as indicated on the drawings.

03300 - Cast-In-Place Concrete

Part 1 General

A. This section covers cast-in-place concrete, including curing and finishing.

B. The latest editions of the following specifications and recommended practices shall govern:

1. ACI 301 Specifications for Structural Concrete for Buildings

2. ACI 306 Recommended Practice for Winter Concrete

3. ACI 305 Recommended Practice for Hot Weather Concrete

Part 2 Products

A. Aggregate shall conform to the requirements of Federal Specification SS-A-281, Classes 1 and 2, and shall be well graded from fine to coarse within designated limits.

B. Portland cement shall comply with ASTM C 150, Type 1. The supplier shall provide mill certification of compliance with specification.

C. Water shall be clean, fresh, and free from injurious amounts of minerals or foreign substances.

03100 - 1

D. Additives and air-entrainment agents shall comply with ASTM C 260.

E. Liquid curing membrane shall be Type 1-D or Type 2.

F. Concrete Mix Design.

1. See the structural drawings for compressive strength requirements for this project.

2. Concrete shall be air entrained and shall contain not less than 3 percent and not more than 6 percent entrained air determined by test procedure ASTM C 138.

3. The design of the concrete mixture shall be the responsibility of the contractor.

Part 3 Execution

A. Ready-mixed concrete may be employed if the time interval between mixing at the plant and discharge into the form does not exceed 1½ hours.

B. All concrete shall be placed within 1½ hours from the time of mixing.

1. No concrete shall be placed after it has started its initial set.

2. No concrete with a temperature above 90 °F shall be placed.

C. Concrete shall be placed in such a manner as to avoid segregation of the mixture.

1. Concrete shall be spread in horizontal layers when practicable.

2. No concrete shall be freely dropped more than 5 feet.

3. Depositing a large quantity of concrete and flowing or working it along the forms will not be permitted.

D. Mechanical vibrators shall be used to consolidate the concrete.

1. Concrete shall be consolidated within 15 minutes after placement.

2. If consolidating concrete with mechanical vibrators is impractical, hand tamping, rodding, and spading will be permitted.

3. A minimum of two vibrators, in working order, shall be on the job during concrete placement.

E. Concrete shall be placed and protected as specified for temperature conditions.

03100 - 2

F. Concrete plant standards and truck mixer and agitator standards shall be as recommended by the National Ready Mix Association.

G. Finishing

1. All finishes shall be made without using cement or other dusting materials.

2. Concrete shall be struck to proper grade and surface finished with float trowels.

3. At all exposed formed surfaces, remove all ties, fill all form tie holes and imperfections that is, honeycombing, with dry cement mortar, remove all lines, and then sack or finish the surface to match adjacent surfaces.

4. All finishes shall be as shown on the drawings.

03100 – 3

15010 - BASIC MECHANICAL REQUIREMENTS

A. This section specifies basic requirements for mechanical installations and includes requirements common to more than one section of Division 15.

B. When two or more items of same material or equipment are required, they shall be of the same manufacturer.

C. Deliver products to project properly identified with names, model numbers, types, grades, compliance labels, and similar information needed for distinct identifications and adequately packaged and protected to prevent damage during shipment, storage, and handling.

D. Protect stored equipment and materials from damage.

E. All work and materials shall be in full accordance with the latest requirements of the following codes:

1. Georgia DNR Minimum Standards for Public Water Systems, latest version

2. Local city, county, and state codes

3. International Building Code - Plumbing

4. American Water Works Association

Note: Whenever the specifications call for or describe materials or construction of a better quality of larger size than are required by the above codes and regulations, the provisions of these specifications shall govern.

15011 – WELL ABANDONMENT AND CLOSURE

A. Only a well driller, licensed by the state of Georgia, shall perform work specified in this section.

B. Comply with the requirements of Georgia Minimum Standards for Public Water

Systems, May 2000, Section 5.3.3 WELL ABANDONMENT.

C. PROCEDURE

1. Remove and dispose of all existing hand pump equipment, piping, conduit, valves, etc.

2. Remove and dispose of concrete slab.

3. Cut casing at ground level.

4. Fill hole with disinfected #57 drainage stone to base of casing.

5. Fill casing with neat cement grout, using a tremie pipe.

15010 - 1

15060 – PIPE, PIPE FITTINGS, VALVES AND HYDRANTS

Install piping, as specified herein and shown on the drawings. The work includes:

A. Underground water distribution piping complete with valves, fittings and appurtenances as specified.

B. Connection of water lines to existing water reservoir as required.

C. Because of the scale of the drawings, it is impossible to indicate all offsets, fittings

(tees, elbows, couplings, wyes, etc.) and accessories necessary. The contractor shall carefully investigate field conditions and shall make actual measurements on the job so that all piping and equipment shall fit. The contractor shall also investigate the conditions to ensure all construction equipment is accessible to the site.

PART 2 - PRODUCTS

Potable Water Pipe. All pipe, valves and fittings shall be NSF 61 approved, certified for potable water and comply with ASTM D 1785.

A. PIPE

1. High Density Polyethylene Pipe (HDPE) and fittings shall be 160 psi, SDR11, 3408 unless otherwise specified.

2. PVC pipe and fittings shall be schedule 40 conforming to ASTM D 1785, unless otherwise specified.

3. Where new ferrous pipe is to connect or extend from existing ferrous pipe, materials and dimensions shall match the existing pipe.

4. Pipe for water collection (upstream of reservoir) shall be HDPE, perforated, meeting one or more of the following standards ASTM-D3035; F714; AWWA C- 901; AWWA C-901. This pipe shall also meet the standards of NSF 61.

B. WATER STOP

1. When pipes pass through concrete wing walls, spring boxes and concrete reservoirs install a water stop seal sleeve. Use Century-Line, Model CS sleeve as manufactured by Link-Seal; or NPC Kor-N-Seal I: 106/406 Series.

C. UNIONS

1. Unions shall be of the same material as the fittings specified and suitable for use at the working pressure and temperature in which they are installed.

2. Unions shall be installed where necessary to accommodate the proper installation, servicing and removal of all equipment.

15060 – 1

D. DIELECTRIC UNIONS

1. All connections between dissimilar metals subject to galvanic action shall be made with an insulating type dielectric adapter.

2. No insulating type dielectric adapter or connection between dissimilar metals shall be installed in an inaccessible area.

3. Dielectric unions shall be the union type, manufactured by Watts, Crane or Jameco. Adapters shall have a working pressure of 250 psi.

E. VALVES

1. Shut off valves 2” and smaller shall be ball valves: MSS SP-10, Class 150, 400 psi CWP, bronze, two piece body, chrome plated brass ball, regular port, Teflon seats and stuffing box ring, blow out proof stem, lever handle with balancing stops. Valves shall have either threaded or flanged ends, to match existing pipes.

Flange adapter fittings may be used. Valves in underground valve boxes shall have a head for turning with a 'T' type steel handle. Contractor shall furnish the government with an appropriate handle to operate all valves.

2. Shut off valves larger than 2” shall be gate valves of class 125, body and bonnet shall be ASTM- B-62 cast bronze composition, solid wedge disc, copper-silicon alloy stem, brass packing gland, Teflon impregnated packing, and malleable handwheel. Milwaukee 149 or equivalent by NIBCO or Stockham.

3. Globe valves up to and including 2” shall be MSS SP-80, Class 125, bronze body, bronze trim, handwheel, bronze disc.

4. Air release valves shall be installed at all high points of the main water line. Use “Crispin” (or approved equal) air release valves. See drawings for appropriate valve pressure rating.

5. Drain valves shall be installed to allow for system drainage at low points on the main line, all bath houses, hydrants and fountains. See drawings. Outfalls of all drain lines shall be equipped with brass screen to prevent insects and mice from entering drain pipe.

6. Check valves shall be of class 125, with bodies and caps conforming to ASTM B- 62 cast bronze composition, swing type disc. Milwaukee 1509 or equivalent by Stockham or NIBCO.

7. Pressure reducing valves (PRV) shall be bronze body, replaceable seat and disc, integral stainless steel strainer, adjustable outlet pressure. Use Watts Regulator Series 25AUB-Z3. Install 2” ball valves on each side of PRV.

8. Float valves shall be Watts, 2” Bronze, heavy duty, with manganese rod and plastic float balls.

F. WATER METER

1. Provide water meter and related piping conforming to applicable local utility company regulations and AWWA standards. 1” Water meter shall be Carlon 1000 JL; 1.5” meter shall be Carlon 150JL; 2” meter shall be 200JL.

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2. If the local utility has requirements or standards different from those specified herein, the contractor shall comply with the utility’s requirements only where they contradict or exceed the requirements herein.

G. HYDRANTS

1. Hydrants for campers shall be freeze proof, sanitary and ADA accessible.

A. Where water pressure provided is less than 20 psi, use piston operated hydrant

(See drawings, Type A) that meets ASSE 1057 Standard Yard Hydrant. Units shall be completely self contained, will not require winterizing. Standard yard hydrants are not acceptable. Submittals required. Use FREEZE FLOW (Hoeptner Products) “Executive” model. Note water lines must be flushed before installation of this unit.

B. Where water pressure provided is more than 20 psi, use self closing hydrant that meets ASSE 1057 Standard Yard Hydrant (See drawings, Type B).

Standard yard hydrants are not acceptable. Submittals required. Use FREEZE FLOW (Hoeptner Products) “Self-Closing” model. Note water lines must be flushed before installation of this unit.

C. Hydrants for maintenance staff shall be sanitary, lockable, heavy duty grip, freeze proof, Yard Hydrant. (See drawings, Type C). Standard yard hydrants are not acceptable. Submittals required. Use Hoeptner Standard with ADA Pump Handle.

H. FOUNTAINS

Water fountains shall be Murdock model M43-2-AVAF, frost proof, with jug filler.

Spouts shall be smooth (non-threaded). Note water lines must be flushed before installation of this unit.

I. CHLORINATORS

Chlorinators shall be non-powered, Norweco model number LF 1000. Contractor shall install necessary fittings and adapters to fit chlorinator to water supply pipe.

PART 3 - EXECUTION

A. Water Piping All distribution mains shall be provided with at least 24” of earth cover, measured above the top of the pipe, unless otherwise approved by the COR. Where ledge is encountered, contractor shall sleeve pipe with schedule 40 PVC or HDPE pipe.

When crossing under a road or driveway, the carrier pipe shall be sleeved with sufficient diameter steel pipe. Bushings shall be installed at ends of steel pipe to protect HDPE pipe.

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B. Procedures for Pipe Joints

1. HDPE pipe joints shall be made in accordance with the pipe manufacturer’s instructions, a copy of which shall be furnished to the engineer prior to this work.

Contractor shall butt weld pipe sections with a contractor furnished thermal fusion machine, wherever practical. Contractor is required to furnish a generator to the site to operate the thermal fusion machine.

2. PVC pipe joints shall be solvent cement joints. Cut ends and ream to remove burrs. Clean and prime outside of pipe and inside fitting with recommended primer. Apply thin coat of solvent cement to inside of fitting and heavier coat to outside of pipe. Assemble quickly, pushing pipe fully into fitting. Wipe off excess cement.

3. Connections for ferrous pipe shall be threaded or flanged.

C. Excavation and Backfill

1. See Division 2.

2. Bottom of trenches shall be graded to provide the required slope.

D. Pipe Laying in Trench (Water Pipe).

1. Minimum depth of cover in trench is 36”.

2. Before the pipe is laid in the trench, the earth forming the bed shall be freed of stones, roots, etc. Pipe shall then be evenly bedded in the earth to leave a uniform support for the entire length of the pipe, except the couplings under which a recess shall be excavated to a sufficient depth to relieve it of any load and to allow ample space for making the joint.

In case the bed trimmed on the bottom of the trench is too low, earth shall be placed in the bottom of the trench and tamped, and a new bed shall be trimmed for the pipe. Pipe shall not be raised by ramming earth beneath it.

3. No pipe shall be laid in water without prior approval from the COR or his designated representative.

4. Prior to making pipe joints, all surfaces to be joined shall be clean and dry.

Lubricants, primers, adhesives, etc., shall be used as recommended by the pipe and/or joint manufacturer's specifications. The joints shall be made water-tight.

5. When the pipe has been bedded and the joint made, the recess under the couplings shall be refilled with earth and tamped on each side of the pipe to hold it securely in place. Care shall be taken to not disturb the position of the pipe during this process.

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6. Backfill shall not be placed over any pipe that is in a heated condition. Before backfilling, the pipe temperature shall be brought to the approximate temperature of the ground.

7. Backfill material shall be as designated on the drawings.

8. Trenches shall be kept water free and dry during bedding, laying and backfilling.

9. At the end of each work day and when left unattended, all open ends of the pipes will be covered to prevent entrance of trash or wildlife.

10. Connections will be made to the existing and/or constructed facilities according to standard plumbing practices. Any connections made between different pipe materials shall be made using connectors or adaptors designed for the purpose of connecting the two types of pipe.

F. Pipe Pressure Tests

1. All piping shall be pressure tested before concealment of joints.

2. All pressure testing must be witnessed by the COR or designee.

3. Water distribution piping shall be tested in accordance with the pipe manufacturer’s recommended testing procedure. Unless expressed otherwise by the pipe manufacturer, the contractor shall adhere to the following testing procedures taken from PPI Technical Report TR-31 by the Plastic Pipe Institute.

A. Pressure Testing Outside the Trench:

After the pipe has been joined, fill it with water; carefully bleed off any trapped air.

Subject the pipe to a hydrostatic test pressure that is 1.5 times the system design pressure for a maximum of 3 hours. During this time, add water periodically to maintain the test pressure; this compensates for the initial stretching of the pipe. The line pressure tightness is determined by visual observation; therefore, it is not necessary to measure the make-up water. Examine every fused joint, any leakage must be repaired and then retested.

NOTE: It shall be the responsibility of the contractor to ensure that appropriate safety precautions are observed during hydrostatic testing above ground.

B. Testing In the Trench:

Fill the pipeline with water after it has been laid; bleed off any trapped air. Subject the lowest element in the system to a test pressure that is 1.5 times the design pressure, and check for any leakage. When, in the opinion of the COR, local conditions require that the trenches be backfilled immediately after the pipe has been laid, apply the pressure test after backfilling has been completed but not sooner than a time which will allow sufficient curing of any concrete that may have been used. All joints, however, must remain open until a successful test has been approved by the

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COR. Typical minimum concrete curing times are 36 hours for early strengths and 7 days for normal strengths. The test procedures consist of two steps; the initial expansion and the test phase. When test pressure is applied to a water filled pipe, the pipe expands. During the initial expansion of the pipe under test, sufficient make-up water must be added to the system at hourly intervals for 3 hours to maintain the test pressure. After about 4 hours, initial expansion should be complete and the actual test can start. When the test is to begin, the pipe is full of water and is subjected to a constant test pressure of 1.5 times the system design pressure. The test phase should not exceed 3 hours, after which time any water deficiency must be replaced and measured. Add and measure the amount of make-up water required to return to the test pressure and compare this to the maximum allowance in the table below.

ALLOWANCE FOR EXPANSION UNDER PRESSURE TEST

NOMINAL GALLONS PER 100 LF OF PIPE

PIPE SIZE 1 HOUR 2 HOURS 3 HOURS

2” 0.08 0.12 0.15 3” 0.10 0.15 0.25 4” 0.13 0.25 0.40 5” 0.21 0.41 0.63 6” 0.30 0.60 0.90

An alternate leakage test consists of maintaining the test pressure (described above) over a period of 4 hours and then dropping the pressure by 10 psi. If the pressure then remains within 5% of the target value for 1 hour, this indicates there is no leakage in the system.

B. NOTE:

Under no circumstances shall the total time under test exceed 8 hours at 1.5 times the system pressure rating. If the test is not complete within this time limit (due to leakage, equipment failure, etc.), the test section shall be permitted to “relax” for 8 hours prior to the next test sequence. Air testing is not recommended. Additional safety precautions may be required.

4. Disinfection

A. All potable water piping shall be disinfected with a 100 ppm chlorine solution after being thoroughly flushed with water to remove sediment, etc. All outlets shall be opened and left open until a strong odor of chlorine is noticeable, after which all outlets shall be closed.

B. After standing for 24 hours, the chlorine residual shall be greater than 25 ppm. If not, the test lines shall be repeated. Upon completing the test, the lines shall be flushed clean until less than 1 ppm residual is present.

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