Specifications - City of Montpelier, Vermont

Title:Montpelier District HeatingCity of Montpelier, VT33615 – Hot Water Pipe Distribution SystemIssue Date:September 25, 2012Page #:6 of 182.1 MATERIALS AND PRODUCTS NOT SPECIFIEDAny materials or products required or implied to accomplish the Work indicated orinferred by the Plans and not specified in this Project Specification or on the Plans shallbe furnished by the CONTRACTOR in conformance with the applicable specifications,with no additional compensation thereto.2.2 AGGREGATE MATERIALSUnless otherwise indicated, all aggregate materials are assumed to be imported. Complywith Section 02200 Earthwork for all aggregate material.2.3 FILLER MATERIALSA. Mild Steel Covered Arc Welding Electrodes, ASME Section II, Part C, SFA5.1.2.4 HOT WATER PIPING PRODUCTSHot water piping materials (pipe, bends, tees, elbows, and valves) materials shall bepurchased by the CONTRACTOR to install the pipe, and perform his/her work inaccordance with the following:A. Hot Water Piping and Fittings shall be manufactured to the followingspecifications:1. Steel Carrier Pipe and Fittings – Pipe material P235GH according to EN102172 meeting or exceeding the following material properties:i. Density: 490 lbs/ft 3 (7850 kg/m 3 )ii. Tensile Strength: 50,750 psi (350 N/mm 2 )iii. Yield Stress: 34,080 psi (235 N/mm 2 )iv. Young’s Modulus: 3.05x10 7 psi (2.1x10 5 N/mm 2 )2. HDPE Jacket – Highdensity polyethylene material according to EN 253meeting or exceeding the following material properties:i. Density: 58 lbs/ft 3 (940 kg/m 3 )ii. Tensile Strength: 2750 psi (19 N/mm 2 )iii.iv.Coefficient of Expansion: 1.11x10 4 / o F (2x10 4 /K)Thermal Conductivity: 0.004 BTU/(min·ft ·oF)(0.43 W/mK)v. Melt Flow Rate: 0.01 – 0.03 oz/10 min. (0.3 – 0.8 g/10 min)HOT WATER PIPE DISTRIBUTION SYSTEM336156