Common use of Piping Clause in Contracts

Piping. A. Provide and erect in a workmanlike manner according to the best practices of the trade, all piping shown on the plans or required to complete the installation intended by these specifications. B. This contractor shall inform himself from the Engineer's specifications and detailed drawings of the exact dimensions of finished work in all rooms where equipment or pipes are to be placed, and arrange his work accordingly, assuming all responsibility for conformity with the surrounding work. C. In the erection of mains, special care must be used in their support and proper allowance shall be made for expansion. D. All steel piping larger than 2" shall have welded joints made by experienced pipe welders. The joints shall all be well filled with metal without interior projections. After welds are made, this contractor shall thoroughly clean inside and leave a smooth bore. Where connections are made on runs, weld-o-lets or thread-o-lets are to be used. E. All other connections are to be made with screwed fittings. F. In making welds, this contractor is to have the end of the pipe properly beveled and perfectly lined up. G. Keep plugged or capped all openings in pipes or fittings. H. Connections to mains are to be provided with swing arms to provide for expansion. I. Make such offsets as are shown or required to place pipes on risers in proper position or to avoid other work. Make such offsets neatly and properly locate them to the satisfaction of the Engineer. J. All pipe lines are to be provided with sufficient number of flange fittings or unions to make possible the taking down of the pipes without breakage of fittings. Lines 2" in diameter and less may be connected by R & L couplings, unless otherwise required by the Engineer. All of the piping shall be erected so as to provide for the easy flow of water and noiseless circulation. Whenever pipes are cut, three-wheel cutters are to be used and the pipes are to be carefully reamed out. K. Due to the extreme limited headroom, all water mains shall be installed perfectly level or with minimum pitch. Install air vents on all high points and drawoff valves on all low points throughout the entire system. L. The entire piping system shall be provided with shutoff valves and drawoff valves so that sections of the system may be drained without interrupting the entire system. M. Extreme care shall be exercised in the location of all piping. N. No crosses or bull head tees shall be used in any part of the work. O. Piping connections to all equipment shall be made with companion flanges or unions for ease in removal of equipment. P. Provide approved pipe identification markers and flow direction arrows on all piping. Markers to be at 30-foot intervals, except in boiler room where they shall be at 10-foot intervals.