Attachment 2A Headquarters Specifications.docx

SECTION 01011

MEASUREMENT AND PAYMENT

GENERAL

SUMMARY

Measurement and payment for contract work will be made only for and under those pay items included in the Schedule of Items. All other work, labor, materials, equipment, and incidentals necessary to successfully complete the project will be considered as included in the payment for items shown. This section defines the method of measurements and basis of payment for work items listed in the Schedule of Items.

When more than one class, size, type, thickness, etc. is specified in the Schedule of Items for any pay item, suffixes will be added to the item number to differentiate between the pay items.

DETERMINATION OF QUANTITIES

The following measurements and calculations shall be used to determine contract quantities for payment.

For items that are measured by the linear foot, such as pipe culverts, fencing, guardrail, piping, utilities, and underdrains, measurements shall be made parallel to the base or foundation upon which the structures are placed.

UNITS OF MEASUREMENT

Payment shall be by units defined and determined according to U.S. Standard measure and by the following:

Each (EA): One complete unit, which may consist of one or more parts.

Linear Foot (LF): Measurement of work along its length from point-to-point; parallel to the base or foundation. Do not measure overlaps.

Job: Treated as one price for the duration of the project.

METHOD OF MEASUREMENT

One of the following methods of measurement for determining final payment is designated on the Schedule of Items for each pay item:

ACTUAL QUANTITIES (AQ) - These quantities are determined from actual measurements of completed work.

LUMP SUM QUANTITIES (LSQ) - These quantities denote one complete unit of work as required by or described in the contract, including necessary materials, equipment, and labor to complete the job. They shall not be measured.

PRODUCTS (NOT APPLICABLE)

EXECUTION (NOT APPLICABLE)

REVISION HISTORY:

PRIMARY AUTHOR: ???

5/11/2006 D. WEWER – Added 50# Bags to list of units.

END OF SECTION 01011

SECTION 01012

MOBILIZATION

GENERAL

SUMMARY

This item is intended to compensate the Contractor for operations including, but not limited to, those necessary for the movement of personnel, equipment, supplies, and incidentals to the project site; for payment of premiums for bonds and insurance for the project; and for any other work and operations which must be performed or costs that must be incurred incident to the initiation of meaningful work at the site and for which payment is not otherwise provided for under the contract.

The measurement shall be lump sum for mobilization.

Method of Payment:

Bond premiums will be reimbursed after receipt of the evidence of payment.

50% of the lump sum, not to exceed 5% of the original contract amount, will be paid following completion of 5% of the original contract amount not including mobilization and bond premiums.

Payment of the remaining portion of the lump sum, up to 10% of the original contract amount, will be paid following completion of 10% of the original contract amount not including mobilization and bond premiums.

Any portion of the lump sum in excess of 10% of the original contract amount will be paid after final acceptance.

Progress payments for mobilization and preparatory work shall be subject to retainage.

PRODUCTS (NOT USED)

EXECUTION (NOT USED)

END OF SECTION 01012

SECTION 15100

WATER DISTRIBUTION SYSTEMS

GENERAL

SUMMARY

This Section shall consist of furnishing and installing the following:

Adjust list below to suit project.

Potable water distribution pipe and fittings.

Drains.

EDIT: Only INDIVIDUAL water meters are covered in the this section. If the meter will be installed in a chlorinator box, pumphouse, or other utility box, it will be covered in the “Plumbing Appurtenances” Spec.

Faucets.

Pressure reducer.

This Section shall also include the flushing, testing and disinfection of waterlines.

DEFINITIONS

Retain abbreviations that remain after this Section has been edited.

GSP: Galvanized Steel Pipe.

P.E.: Polyethylene C. O. R.: Contracting Officer’s Representative.

SUBMITTALS

Product Data: For the following:

DELETE unneeded items below.

Pipe and fittings.

Drain and vent screens.

Faucets.

Valves.

Pressure reducer

QUALITY ASSURANCE

All work is to be completed according to applicable Federal, State and Local codes. This work includes, but is not limited to, materials, installation, testing and disinfection Piping materials shall bear label, stamp, or other markings of specified testing agency.

NSF Compliance:

DELETE first subparagraph below if NSF 14 is not applicable. NSF 14 applies to plastic (HDPE and PVC) water pipes.

Comply with NSF 14 for plastic potable-water-service piping. Include marking "NSF-pw" on piping.

Comply with NSF 61 for materials for water-service piping and specialties for domestic water.

MINIMUM SYSTEM REQUIREMENTS

Unless otherwise noted, the minimum working pressure for piping and specialties shall be 160 psig.

DELIVERY, STORAGE AND HANDLING

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.

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

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

DELETE this Article if there are no existing utilities. Coordinate with requirements specified in Division 1 Section "Temporary Facilities and Controls" for temporary utilities.

COORDINATION

EDIT this Article to suit Project if new water-service piping will connect to existing piping.

Coordinate connection to existing waterlines with COR.

Verify piping materials, sizes, entry locations and pressure requirements are compatible with connection point.

MEASUREMENT AND PAYMENT

CHOOSE method of payment: paragraph above or below.

EDIT list below to suit project.

Payment will be as listed for the following items:

Water Line Replacement: Unit of measurement is “Linear Feet” of pipe installed, of each type and size designated, and including trenching, fittings, identification tape, bedding material, and backfill.

Faucets: Unit of measurement is “Each” and includes: excavation, transition to ¾” GSP and GSP riser, vacuum breaker, Haws self closing paddle faucet, 4”x4” treated timber post and brackets, drain rock (standard installation) or cold mix asphalt (handicap installation) Valves: Unit of measurement is “Each” and includes reducers (where needed), valve box, box extender, excavation and backfill.

Pressure reducer: unit of measurement is “Each” and includes the pressure reducers, pipe size reducers, tee and pressure gauge, unions and all related fittings, concrete valve box with lid, excavation and backfill.

DELETE if thrust blocks are incidental to waterline.

DELETE if drains are incidental to pipeline (typical).

Drains: Unit of measurement is “Each” and includes excavation, 10 feet of 3/4” GSP, fittings, 3/4” valve, strainer, riprap, backfill and all work within 10 feet of the drain outlet, as shown on the Drawings.

PRODUCTS

GENERAL

All waterlines, pipes, and fittings shall be new and unused, of the type, pressure rating or class, and size specified and as shown on the Drawings.

PIPES AND FITTINGS

DELETE pipe types that are not needed.

Polyethylene (PE):

1. Minimum Pressure Rating: 160 psig

2. Fittings: Plastic mechanical type as manufactured by Central Plastics or equal; barb and hose clamp systems will not be allowed.

Galvanized Steel Pipe (GSP): ASTM A53, Schedule 40, threaded ends meeting ASME B1.20.1.

Fittings: Threaded, ASTM A 338.

Valves.

Gate valves of California approved brass, manufactured by Hammond or approved equal.

Valve box “Christie G5BOX” or approved equal Valve box extender of 6” PVC schedule 40.

Pressure Reducer 1-1/4 inch pressure reducer, of California approved brass, manufactured by Wilkins (WIL NR3 XL LF 1-1/4) or approved equal with outlet pressure range of 25-75 p.s.i.

Furnish one extra identical pressure reducer as a spare.

Drains.

Suction Strainer Design: Galvanized (zinc plated), cold rolled, 16-gage steel strainer with threaded end to fit GSP drain pipe size.

Model: “SSS” Series, Round Hole Strainer, as manufactured by Campbell Manufacturing Inc., or an approved equal.

Riprap The stones be obtained from on-site excavated material or a borrow source designated by the Contracting Officer. Stones used shall be such that not more than 10 percent of the individual stones shall have a perimeter less than 12 inches in the smallest section. All of the stones shall have a volume less than a 1/2 cubic foot.

The stones shall be sound, hard, durable and free from laminations, fractures, or other structural defects. They shall be of such quality that they will not disintegrate on exposure to water or weathering.

FAUCETS

Haws 6252EHLF or Arrowhead Brass 302SC self closing lever action bib faucet.

Vacuum breaker shall be Watts Regulator 288A or approved equal.

Risers shall be made of ¾” GSP schedule 80.

Posts shall be made of treated 4”x4” lumber.

EXECUTION

PIPING INSTALLATION

Construct the water system to the lines and grades shown or established in the field.

Stake locations of waterlines as shown on the Drawings. Waterline location shall be approved by the Contracting Officer before installation.

All water line shall be graded to drain. Trench and remove existing water line.

Bed with 6 inch layer of sand or screened native material. See 3.2 below. Where excavating across gravel roads, segregate gravel for later use.

All pipe, fittings, and appurtenances shall be handled and installed in strict conformance to the manufacturer’s recommendations.

Drains, valves, and other regulating and controlling devices shall be installed in the line where called for on the drawings.

The interior of all pipe, fittings, and other accessories shall be kept as free as possible from dirt and foreign matter at all times. Each piece of line as it is laid shall be cleaned of all debris. When the pipeline has become dirty on the inside during shipment or storage, it shall be swabbed out by drawing a damp swab through the line before placing in trench. Care shall be exercised to keep all joining surfaces clean. Any pipe with contaminated or damaged joining surfaces, which cannot be satisfactorily cleaned or repaired, shall be discarded. Under no circumstances shall pipe be installed in water, and no pipe shall be installed when trench conditions or the weather is unsuitable for such work. At all times when work is not in progress, all open ends of the pipe and fittings shall be securely closed to the satisfaction of the Contracting Officer so that no trench water, rodents, earth, or other substance will enter the pipe or fittings.

Laying Pipe No pipe shall be placed in the trench until the Contracting Officer has approved the trench and bedding.

Pipes shall be placed true to the lines and grades shown on the Drawings and as specified. Complete water system shall be constructed to drain by gravity to drains for seasonal shutdown. Waterlines shall be constructed to drain at a minimum grade of 1%. Water lines not meeting this requirement shall be removed by the Contactor and replaced at no cost to the Government.

Each section of the pipe shall rest upon the pipe bed for the full length of its barrel.

Within 24 hours after installation, bed the pipe with sand or screened native material to 3 inches over the top of the pipe for the full width of the trench. Backfill the pipe, leaving the joints and one foot of pipe on each side of each joint exposed until testing is complete.

When work is not in progress, securely close open ends of pipe and fittings.

Thermal fused joints shall be initially cut smooth and square. Follow all manufacturer’s recommendations for cutting, heating, fusing and cooling of all joints. Provide adequate clearance around joints for fusing equipment while maintaining true alignment of pipe.

Use proper fittings in order to follow the required line and grades and to avoid excessive curvature. Deflections from a straight line or grade, as required by vertical curves, horizontal curves, or offsets, shall not exceed the manufacturer's recommended maximum joint deflection or curvature for their pipe.

Bends that result in joint tension or permanent pipe deformation are prohibited.

Pipelines may be relocated slightly, if necessary, to avoid existing obstacles. However, the required slopes must be maintained.

Branch Connections Branch connections to the main shall be made with tees.

Horizontal tees for waterline laterals shall not be permitted. The branch side of tees shall be up when drainage is toward the tee, and down when drainage is away from the tee.

Pipe Joints Joints shall be made, using jointing materials and applied with the proper accessories, in accordance with the manufacturer's instructions. Completed joints shall be watertight, and capable of passing the required hydrostatic testing. If pipe and fittings are assembled with a lubricant, it must be nontoxic.

Dissimilar Joints: Connections between two dissimilar pipes or fittings shall be installed in manner recommended by the pipe manufacturer and approved by the Contracting Officer. Use adapters compatible with both piping materials, outer diameters and system working pressure.

EDIT paragraphs below if not using new HDPE pipelines.

Threaded Metal Joints:

Thread pipes with tapered pipe threads according to ASME B1.20.1, apply tape or joint compound, and apply wrench to fitting and valve ends into which pipes are being threaded.

Exposed threaded pipe joints on galvanized steel pipe shall be painted with mastic following the manufacturer’s application procedures.

Field cut ends shall be squared off by grinding or filing; ends shall be reamed with all chips and flakes removed.

Field cut threads or machined joints shall be made with sharp tools to sharp finished ends.

FINAL BACKFILL AND GRADING

See 3.1.H.4 above for bedding of pipe and initial backfill.

Use detectable warning tape over piping and at outside edges of underground structures at a depth from 6 to 12 inches Native material shall be placed in the trench and tamped with the trenching equipment. The trench line shall be crowned up to 6 inches. Excess material shall be uniformly sloped from the top of the crown. All disturbed ground shall be raked smooth and organic debris removed from the trench line.

Gravel road and camping spur crossings shall be backfilled with care for compaction. Lifts shall not exceed 6 inches and shall be tamped with equipment or hand operated vibratory equipment. Gravel segregated at initial trenching shall be placed as the top lift and crowned up to 3 inches.

DRAINS

Transition from water system piping to galvanized steel pipe 10-feet from atmospheric outlet of daylight drain.

Install suction strainer on the atmospheric outlet of daylight drains.

Minimum grade of slope of drain shall be 2%.

Place riprap securely around outlet with a minimum 6” air gap.

HYDROSTATIC TESTING

General The Contractor shall conduct pressure and leakage tests on all newly constructed portions of the water system, including water mains, service lines, fittings, valves, and hydrants. New waterlines that are extensions or modifications of an existing water system shall be tested at the test pressure specified here unless the Contracting Officer specifies another pressure. Pneumatic testing will not be allowed.

The contractor shall ensure that any appurtenance attached to the pipeline at the time of testing is rated to withstand the pressures that will exist during testing.

Conduct piping tests before joints are covered and after thrust blocks, if required, have hardened sufficiently. Joints shall remain uncovered until testing is completed satisfactorily.

The Contractor shall furnish the pump, pipe, gauge, measuring device, connections, and all other necessary equipment, and shall furnish the necessary personnel to conduct the tests. All equipment, gauges, and attachments shall be subject to approval by the Contracting Officer.

The Contracting Officer shall be present during the testing period.

Waterlines shall be tested in sections not to exceed 2,000 ft in length or a maximum pressure differential of 30 psi in the test section.

No paints, asphalts, tars, enamels, or other types of pipe compounds shall be used to eliminate leaks.

Pressure and Leakage Test The test pressure shall:

Equal at least 100 psig at the highest elevation of the test but not exceed 125 psi at any point being tested.

Not exceed the thrust restraint design pressures.

Not vary by more than +/- 5 psi from the established test pressure.

Not exceed twice the rated pressure of valves when the test section includes closed valves.

Pressure Test Procedure Equipment: The test pressure shall be applied by means of a pump connected to the pipe in a manner satisfactory to the Contracting Officer.

Preparation: Fill pipeline 24 hours before testing. Use only potable water. Each valved section of pipeline shall be slowly filled with water and all air shall be expelled from the pipeline. Apply test pressure to stabilize system.

Pressurization:

Increase pressure in 50-psig increments and inspect each joint between increments.

Hold at test pressure for 1 hour.

Decrease to 0 psig.

Slowly increase again to test pressure and hold for 1 more hour. If the test pressure cannot be sustained within +/- 5 psi during this time, then the system will be determined to have leakage.

Leakage shall be verified by the Contractor and the Contracting Officer.

Locate and repair leaking joints with new materials and repeat test until leakage is within allowed limits. All visible leaks are to be repaired regardless of the amount of leakage.

Examination: All exposed pipe, fittings, valves, and joints shall be carefully examined. Any cracked or defective pipe, fitting, or valve discovered shall be repaired or replaced by the Contractor at his own expense with new material and the test repeated until satisfactory to the Contracting Officer.

Results The Contractor shall furnish a written report to the Contracting Officer describing the results of each test. The report must identify the specific portions of the pipeline tested, the pressure, the duration of the tests, and the amount of leakage.

CLEANING AND DISINFECTION

Clean and disinfect water-distribution piping as follows:

Purge new water-distribution piping systems and parts of existing systems that have been altered, extended, or repaired before use.

Use purging and disinfecting procedure prescribed by authorities having jurisdiction or, if method is not prescribed by authorities having jurisdiction, use procedure described in AWWA C651 or as described below:

Flushing Pipelines After the pressure and leakage testing has been completed, all water pipes shall be thoroughly flushed.

Flushing shall remove all debris from the pipeline, including HDPE pipe shavings, gravel and any other material that may have accidentally entered the pipeline during construction.

Remove all self-closing faucets and drinking fountains from hydrants before flushing lines. Failure to do so will likely clog the internal parts of the faucet.

If no hydrants or other outlets are installed at the end of the waterline, an outlet at the end of each lateral shall be provided. Outlets shall be large enough to develop a velocity in the waterlines of at least 2.5 feet per second (see Table l for necessary flows). If necessary, use a booster pump or other method to obtain the necessary flows.

Minimum velocities must be obtained in all mainlines, laterals and drainlines.

Ensure flushing outlets have adequate drainage and no damage or erosion will occur from the flushing process. Install hoses and/or pipe extensions if necessary.

TABLE 1

Required Flow in Gallons per Minute (GPM) to provide 2.5 feet per second Flushing Velocity

Type of Pipe

Nominal Pipe Size (inches)

HDPE

(SDR 11)

PVC

(160 psi) Galv. Steel (Schedule 40)

Requirement of Chlorination Pipelines: After flushing, all new waterlines and repaired portions of, or extensions to, existing waterlines shall be disinfected by chlorination. Chlorination shall provide a minimum of 25 mg/l residual after 24 hours contact in the system. This may be expected with an application of 50 mg/l, although some conditions may require more. The entire system including the storage tank or spring box shall be filled with the disinfecting solution. All taps, hydrants, and other outlets shall be opened and left open until chlorine is noticeable by odor or testing in the water coming from each. Immediately close taps, hydrants, and other outlets. The chlorinated water shall be retained in the waterlines for at least 24 hours. An alternative of introducing a chlorine solution of 300 mg/l for a period of 3 hours is also approved.

Reservoirs Only: For large reservoirs where water is not going to be reused to disinfect connecting distribution lines, or where it is not economical to treat the entire contents with 50 mg/l of chlorine, disinfection can be accomplished by swabbing or spraying the walls, floor, and ceiling with a chlorine solution containing 300 mg/l of available chlorine. A minimum of 3 hours shall elapse before the structure is flushed and returned to service.

Preparation of Disinfecting Mixture: Chlorine-bearing compounds used for disinfection shall comply with ANSI/NSF 60.

Calcium hypochlorite must be prepared as a water mixture for introduction into the waterlines. The powder should first be made into a paste and then thinned to either a 1 percent or 5.25 percent chlorine solution.

Sodium hypochlorite is already a water mixture.

Table 2 gives the amount of chlorine-bearing compound to mix to obtain either a 1 percent or 5.25 percent solution.

Table 3 gives the amount of a 1 percent or 5.25 percent solution required to obtain a 50 mg/l solution for various volumes.

Table 4 gives the volume of water contained in each 100 feet of pipe of various sizes.

TABLE 2

Amount of Chlorine-bearing Compound to Mix to Obtain a 1% or 5.25% Solution

Water

Water

TABLE 3

Amount of Chlorine-Water Solution Required to make 50 mg/l Chlorine Solution for Various Volumes

Volume (Gallons) 5.25% Solution 1.00% Solution

TABLE 4

Volume in Gallons per 100 feet of Pipe

Type of Pipe

Nominal Pipe Size (inches)

HDPE

(SDR 11)

PVC

(160 psi) Galv. Steel (Schedule 40)

Method of Chlorine Application: The preferred method is to fill the storage tank (for a distribution system) or the spring head box (for a supply system) with chlorinated water of the proper strength. The water shall then be released through the outlet lines to the remainder of the system and retained there for the required period of time. If either of these points of application is unavailable, chlorinated water of the proper strength may be added to the beginning of the pipeline extension, or to any valved section of the extension, through a corporation stop installed by the Contractor in the top of the pipe. Other methods may be approved by the Contracting Officer.

Testing of Chlorine Residual: To ascertain the concentration, the chlorine residual shall be measured by the Contracting Officer in accordance with the procedures described in the current edition of “Standard Methods for the Examination of Water and Wastewater,” or AWWA M12, or by using an appropriate high-range chlorine test kit Final Flushing and Testing: Following the retention period, as specified in this Section, all heavily chlorinated water shall be thoroughly flushed from the pipeline until the chlorine concentration in the water leaving any part of the line is no higher than 1 mg/1.

Disposal:

Heavily chlorinated water shall not be drained directly into streams, rivers, lakes or drainage ditches which lead to surface water.

When emptying the lines or tank after the 24-hour period, whether the system has passed or failed, the chlorine solution shall be neutralized before being discharged. Neutralize system by adding sodium thiosulfate to the storage tank in accordance with Table 5 below. Let the sodium thiosulfate sit in the storage tank for 24-hours and then release the water from the tank and flush the system. Residual chlorine at the outlets shall be minimal.

TABLE 5

Amounts of Chemical Required to Neutralize Various Residual Chlorine Concentrations in 1,000 gallons of Water

(Na2 S2 O3 –5H2O)

Bacteriological Examination: After the system has been disinfected as specified, but before the new water piping is put to use or connected to existing piping, the Contractor shall test the water for bacteriological contamination from representative points in the system as approved by the Contracting Officer. The coliform organisms shall be tested for presence/absence in accordance with State drinking water regulations. If coliform bacteria are present, testing shall be repeated in accordance with State drinking water regulations. If the report of this examination is unsatisfactory, the system shall be flushed and the disinfection procedure repeated until the results of bacteriological examinations are satisfactory.

REVISION HISTORY:

PRIMARY AUTHOR: DUWAYNE KIMBALL AND NOLA DRISKELL. WRITTEN DURING THE WATER/WASTEWATER SPEC-WRITING SESSION IN JANUARY, 2004. CREATED FROM ORIGINAL MASTERSPEC 02510 AND R2 SPEC 02510. EDITTED TO INCLUDE PARTS OF FORMER FS CSI SPECS 15200.

REPLACES: CSI Section 15200.

DESIGN NOTES:

This section does not include curb valves and boxes, air relief or pressure regulating valves, or campground hydrants.

3/20/2006: D. Wewer - Updated Section to new numbering system.

3/7/2007: D. Wewer – Added fire hydrant markers.

3/8/2007 D. Wewer – Fixed Section 033020 concrete reference and added concrete reference for thrust blocks.

3/19/2007 D. Wewer – Added 1% & 2% drainage slope options.

4/18/2007 D. Wewer – Added non-potable & sewerline crossings to the payment for pipeline.

4/27/2006 D. Wewer – Added new type of pipe: gasketed PVC (matches 221300 Press. Sewerlines).

5/1/2007 D. Wewer – Updated Water/Sewer Crossings. Tried to make requirement that would meet all states in the Region. Also overhauled the piping installation section (in conjunction with revisions to Section 221300 “Onsite Wastewater Treatment Systems”).

6/6/2007 D. Wewer – Updated portions of Part 3 “Execution” to match Section 221300.

7/3/2008 D. Wewer – Added flushing requirements.

END OF SECTION 221100

HEADQUARTERS CAMPGROUND WATER LINE REPLACEMENT 01011 - 14