SECTION 02687

SITE GAS LINES

PART	GENERAL

SECTION INCLUDES

Pipe and fittings for site utility [natural] [propane] gas distribution.

Propane storage tanks.

PRODUCTS FURNISHED BUT NOT INSTALLED UNDER THIS SECTION

Section [_____-__________]: Placement of pipe sleeves in concrete [retaining walls] [________________].

PRODUCTS INSTALLED BUT NOT FURNISHED UNDER THIS SECTION

Section [_____-__________]: Supply of connection devices to building gas pipe for placement by this Section.

RELATED SECTIONS

Section 02207 - Aggregate Materials.

Section 02222 - Excavating.

Section 02223 - Backfilling.

Section 02225 - Trenching.

Section 02607 - Manholes and Covers.

Section 02655 - Cathodic Protection - Passive.

Section 03300 - Cast-in-Place Concrete: Foundations for storage tanks.

Section 15410 - Plumbing Pipe.

UNIT PRICE - MEASUREMENT AND PAYMENT

Pipe and Fittings:

Basis of Measurement: By the linear [foot] [________] ([meter] [________]).

Basis of Payment: Includes hand trimming excavation, bedding, pipe and fittings, connection to building service piping and to [utility gas source] [________].

Gas Cocks:

Basis of Measurement: By the unit.

Basis of Payment: Includes valve, fittings and accessories.

Propane Tanks:

Basis of Measurement: By the unit.

Basis of Payment: Includes concrete base, regulator, valves, vaporizer, controls and tank piping.

REFERENCES

AASHTO T180 - Moisture-Density Relations of Soils Using a 10-lb (4.54 kg) Rammer and an 18-in. (457 mm) Drop.

ANSI/ASME B16.18 - Cast Copper Alloy Solder Joint Pressure Fittings.

ANSI/ASME B16.22 - Wrought Copper and Copper Alloy Solder Joint Pressure Fittings.

ANSI/ASME B16.26 - Cast Copper Alloy Fittings for Flared Copper Tubes.

ANSI/ASME Sec. 8D - Pressure Vessels.

ANSI/ASME Sec. 9 - Welding and Brazing Qualifications.

ANSI/ASTM B32 - Solder Metal

ANSI/ASTM D698 - Test Methods for Moisture-Density Relations of Soils and Soil-Aggregate Mixtures, Using 5.5 lb (2.49 Kg) Rammer and 12 inch (304.8 mm) Drop.

ANSI/ASTM D1557 - Test Methods for Moisture-Density Relations of Soils and Soil-Aggregate Mixtures Using 10 lb (4.54 Kg) Rammer and 18 inch (457 mm) Drop.

ANSI/AWS A5.8 - Brazing Filler Metal.

ANSI/AWWA C105 - Polyethylene Encasement for Ductile Iron Piping for Water and Other liquids.

ANSI B16.3 - Malleable Iron Threaded Fittings.

ANSI B16.11 - Forged Steel Fittings, Socket Welding and Threaded.

ANSI B31.2 - Fuel Gas Piping.

ANSI B31.8 - Gas Transmission and Distribution Piping Systems.

ANSI Z223.1 (NFPA 54) - National Fuel Gas Code.

ASME Boiler and Pressure Code.

ASTM A53 - Pipe, Steel, Black and Hot-Dipped, Zinc Coated Welded and Seamless.

ASTM A120 - Pipe, Steel, Black and Hot-Dipped, Zinc Coated (Galvanized) Welded and Seamless, for Ordinary Uses.

ASTM A234 - Pipe Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and Elevated Temperatures.

ASTM B75 - Seamless Copper Tube.

ASTM B88 - Seamless Copper Water Tube.

ASTM D2513 - Thermoplastic Gas Pressure Pipe, Tubing and Fittings.

ASTM D2517 - Reinforced Epoxy Resin Gas Pressure Pipe and Fittings.

ASTM D2683 - Socket Type Polyethylene Fittings For Outside Diameter Controlled Polyethylene Pipe and Tubing.

ASTM D2922 - Test Methods for Density of Soil and Soil-Aggregate in Place by Nuclear Methods (Shallow Depth).

ASTM D3017 - Test Methods for Moisture Content of Soil and Soil-Aggregate Mixtures.

ASTM F678 - Polyethylene Gas Pressure Pipe, Tubing and Fittings.

SUBMITTALS

Submit under provisions of Section [01300.] [________.]

Product Data: Provide data on pipe materials, pipe fittings, valves and accessories.

Manufacturer's Certificate: Certify that [products] [________] meet or exceed [specified requirements] [___________________].

PROJECT RECORD DOCUMENTS

Submit under provisions of Section [01700.] [________.]

Accurately record actual locations of pipe mains, valves, connections, and invert elevations.

Identify and describe unexpected variations to subsoil conditions or discovery of uncharted utilities.

QUALITY ASSURANCE

Perform Work in accordance with [utility company] [municipality.] [________.]

Gas Cock: Manufacturer's name and pressure rating marked on valve body.

Welding Materials and Procedures: Conform to ASME Boiler and Pressure Vessel Code [and applicable state regulations].

[Welders Certification: In accordance with [ANSI/ASME Sec 9.] [__________.]]

Conform to [ANSI Z223.1 (NFPA 54)] [ANSI B31.2] [ANSI B31.8].

DELIVERY, STORAGE, AND HANDLING

Deliver, store, protect and handle products to site under provisions of Section [01600.] [________.]

Deliver and store valves in shipping containers with labelling in place.

PART	PRODUCTS

MANUFACTURERS - PIPE

[__________________________________] Product [_________].

[__________________________________] Product [_________].

[__________________________________] Product [_________].

Substitutions: Under provisions of Section [01600.] [________.]

PIPE

Steel Pipe [Below Ground]: [ASTM A53] [ASTM A120] [____], Schedule [40] [80] black:

Fittings: ANSI B16.11, forged steel, or ASTM A234 forged steel welding type.

Joints: [____________] welded.

Jackets: [ANSI/AWWA C105 polyethylene jacket] [Double layer, half lapped, [10] [____] mil ([0.25] [____] mm) polyethylene tape].

****** [OR] ******

Steel Pipe Above Ground: [ASTM A53] [ASTM A120] [_____], Schedule [40] [80] black:

Fittings: ANSI B16.3, malleable iron, ANSI B16.11, forged steel, or ASTM A234, forged steel welding type.

Joints: [Threaded.] [Welded for pipe sizes over [____] inches ([____] mm).]

****** [OR] ******

Copper Tubing [Below Ground]: ASTM B88, Type K [, internally tinned]:

Fittings: ANSI/ASME B16.18, cast copper, or ANSI/ASME B16.22, wrought copper [; internally tinned].

Joint: ANSI/AWS A5.8 BCuP silver brazed.

****** [OR] ******

Copper Tubing [Above Ground]: ASTM B88, Type [K] [L] or ASTM B75, Type GP [; internally tinned]:

Fittings: ANSI/ASME B16.18 cast copper, ANSI/ASME B16.22, wrought copper, or ANSI/ASME B16.26, cast copper [, internally tinned].

Joint: [ANSI/ASTM B32, Solder, Grade 95TA] [ANSI/AWS A5.8, BCuP silver brazed].

****** [OR] ******

Polyethylene Pipe: [ASTM D2513, SDR 11.5] [ASTM F678 Series [125] [160]] [______]:

Fittings: [ASTM D2513] [ASTM D2683] [__________].

Joints: [Mechanical or Compression fit] [Fusion Welded] [_____________________].

Trace Wire: Magnetic detectable conductor, [clear] [brightly colored] plastic covering, imprinted with "[Natural Gas Service] [________]" in large letters.

****** [OR] ******

Reinforced Epoxy Resin Piping: ASTM D2517:

Fittings: ASTM D2517.

Joints: Bell and spigot with epoxy resin.

Trace Wire: Magnetic detectable conductor, [clear] [brightly colored] plastic covering, imprinted with "[Natural Gas Service] [________]" in large letters.

GAS COCKS

Manufacturers:

[_________________________________] Model [________].

[_________________________________] Model [________].

[_________________________________] Model [________].

Up to 2 Inches (50 mm): 150 psig (1 040 kPa) WOG, bronze body, bronze tapered plug, non-lubricated, Teflon packing, threaded ends [with cast iron curb box, cover, and key].

Over 2 Inches (50 mm): 125 psig (860 kPa) WOG, [Steel] [Cast iron] body and tapered plug, non-lubricated, Teflon packing, threaded ends [, with cast iron curb box, cover, and key].

****** [OR] ******

Over 2 Inches (50 mm): Cast iron body and plug, pressure lubricated, Teflon packing, flanged ends [, with cast iron curb box, cover, and key].

PRESSURE REGULATING VALVES

Manufacturers:

[_________________________________] Model [________].

[_________________________________] Model [________].

[_________________________________] Model [________].

Valves: Single stage, malleable iron body, corrosion-resistant, pressure regulator with atmospheric vent, elevation compensator; with threaded ends for 2 inch (50 mm) and smaller, flanged ends larger than 2 inch (50 mm).

Capacity: For inlet and outlet gas pressures, specific gravity, and flow rate indicated.

****** [OR] ******

Capacity:

Inlet Gas Pressure [125 psig (860 kPa)] [_______].

Outlet Gas Pressure range: From [8 inches WG (2.0 kPa)] [____________] to [15 inches WG (3.7 kPa)] [_________].

Specific Gravity: [______________].

Flow Rate: [___________] CFH ([______] cu m/sec).

PROPANE STORAGE TANKS

Manufacturers:

[_________________________________] Model [________].

[_________________________________] Model [________].

[_________________________________] Model [________].

Construction: Closed, welded steel, tested and stamped in accordance with ANSI/ASME Section 8D; minimum 250 psig (1 700 kPa) rating; cleaned, prime coated and painted with two coats of silver anti-rust paint, and supplied with steel support saddles, pressure gage; tapping for installation of piping and accessories.

Vaporizer: [1,000] [______] watts, heating cable bedded in [1] [____] inch ([25] [____] mm) of glass fiber insulation and covered by flexible stainless steel plate, with thermostat in weatherproof box set to turn on at -13 degrees F (-25 degrees C) with manual off-on switch.

****** [OR] ******

Vaporizer: Direct fired.

Size:

Capacity: [500] [1,000] [2,000] [_____] gallons ([1 900] [3 800] [7 600] [______] liters).

Diameter: [_____] inches ([_____] mm).

Overall Length: [____] inches ([_____] mm).

BEDDING MATERIALS

Bedding: Fill Type [A1] [A2] [A3] [A4] as specified in Section [02207.] [________.]

PART	EXECUTION

EXAMINATION

Verify existing conditions under provisions of Section [01039.] [________.]

Verify that building service connection and utility gas main size, location and invert are as indicated.

PREPARATION

Ream pipe ends and remove burrs. [Bevel plain end ferrous pipe over 2 inches (51 mm) diameter] [Thread ferrous pipe 2 inches (51 mm) diameter and under].

Remove scale and dirt, on inside and outside, before assembly.

Prepare piping connections with [flanges] [threading] and unions.

BEDDING

Excavate pipe trench in accordance with Section [02225] [________] for work of this Section. Hand trim excavation for accurate placement of pipe to elevations indicated.

Place bedding material at trench bottom, level fill materials in one continuous layer not exceeding [6] [8] [____] inches ([150] [200] [____] mm) compacted depth, compact to [95] [____] percent].

Backfill around sides and to top of pipe with fill, tamped in place and compacted to [95] [____] percent.

Maintain optimum moisture content of bedding material to attain required compaction density.

INSTALLATION - PIPING

Maintain separation of gas line from [sewer] [water] [________] piping in accordance with [________] code.

****** [OR] ******

Group piping with other site piping work whenever practical.

Route piping in straight line.

Install piping to conserve space and not interfere with use of site space.

Install piping to allow for expansion and contraction without stressing pipe or joints.

Install cocks and other fittings.

Establish elevations of buried piping to ensure not less than [24] [36] [_____] inches ([600] [900] [_____] mm) of cover in non-travelled areas and [48] [_____] inches ([1 200] [_____] mm) of cover in driveways and parking areas.

Lay pipe on bedding.

[Wrap couplings and fittings of steel pipe with polyethylene tape and heat shrink over pipe.]

[Install trace wire continuous [over top of pipe.] [buried [6] [____] inches ([150] [____] mm) below finish grade, above pipe line; coordinate with Section [02223] [02225].]

Backfill trench in accordance with Section [02225.] [__________.]

Center and plumb valve box over valve. Set box cover flush with finished ground surface. Prevent shock or stress from being transmitted through valve box to valve.

[Wrap valve and valve box with polyethylene tape and heat shrink.] [Paint valves and valve boxes with red anti-rust primer and one coat of epoxy paint.]

SERVICE CONNECTIONS

[Provide sleeve in [foundation] [________] wall for gas service main. Calk enlarged sleeve watertight.]

[Anchor service main to [interior] [exterior] surface of [foundation] [________] wall.

Install service regulator adjacent to building wall in specified location.

Install service regulator and riser pipe to prevent undue stress upon service pipe. [For plastic service pipe, use steel pipe riser from below ground to regulator.]

Provide regulator vent with rain and insect proof opening, terminating away from building openings.

PROPANE TANK INSTALLATION

Place tank legs on concrete footings, level within tolerance of [2] [____] inches ([50] [____] mm). Provide footings in accordance with Section [03300.] [________.]

Prepare and grade an area outside tank perimeter, for a distance of [6] [____] foot ([1 800] [____] m). Grade, place and compact Type [A1] [____] gravel fill to a compacted depth of [3] [____] inches ([75] [____] mm). Compact to [95] [____] percent.

Provide tank with relief valve, shutoff valve, pressure regulator, pressure gage and removable protection cover. Install piping, shutoff valve and pressure gage to underground piping.

Set tank regulator to outlet pressure of [10] [15] [20] psig ([70] [100] [140] kPa).

Install vaporizer to under side of tank and secure to tank with aluminum tray and two stainless steel straps.

Install weatherproof control box for vaporizer [40] [____] inches ([1 000] [____] mm) above ground surface. Install to 4 x 4 inch (89 x 89) mm [cedar] [________] post, driven into ground [40] [____] inches ([1 000] [____] mm).

Install wiring in accordance with Section [16180] [________]. Install from vaporizer to control box [20] [____] inches ([500] [____] mm) below ground surface. Install service wiring [24] [____] inches ([600] [____] mm) below ground from control box to building.

FIELD QUALITY CONTROL

Field [inspection and] testing will be performed under provisions of Section [01400.] [01410.] [________.]

Compaction testing will be performed in accordance with [ANSI/ASTM D1557] [ANSI/ASTM D698] [AASHTO T180] [ASTM D2922] [ASTM D3017].

Pressure test gas lines to [____] psi ([____] kPa).

If tests indicate Work does not meet specified requirements, [remove Work, replace and retest at no cost to Owner.] [refer to Section [01019] [01025] Defect Assessment.]

Frequency of Tests: [________________].

END OF SECTION