Specifications include, but are not limited to: A. General: Install piping as described below, except where system Sections specify otherwise. Individual piping system specification Sections in Division 23 specify piping installation requirements unique to the piping system. B. General Locations and Arrangements: Drawings (plans, schematics, and diagrams) indicate general location and arrangement of piping systems. Indicated locations and arrangements were used to size pipe and calculate friction loss, expansion, pump sizing, and other design considerations. Install piping as indicated, except where deviations to layout are accepted on coordination drawings. C. Install piping at indicated slope. D. Install drains at low points in mains, risers, and branch lines consisting of a tee fitting, ô´ ball valve with hose connection, cap and chain. Install vents at high points. Pitch water piping upward in direction of flow and arrange fittings to permit air to be vented to system high points or to expansion tank, and to permit complete drainage to low points. Use eccentric fittings where necessary. E. Install components having pressure rating equal to or greater than system operating pressure. F. Install piping in concealed interior and exterior locations, except in equipment rooms and service areas. G. Install piping free of sags and bends. H. Install exposed interior and exterior piping at right angles or parallel to building walls. Diagonal runs are prohibited, except where indicated. I. Install piping tight to slabs, beams, joists, columns, walls, and other building elements. Allow sufficient space above removable ceiling panels to allow for ceiling panel removal. J. Install piping to allow application of insulation plus 1-inch clearance around insulation. K. Locate group of pipes parallel to each other, spaced to permit valve servicing. L. Install fittings for changes in direction and branch connections. M. Install couplings according to manufacturers printed instructions. N. Install pipe escutcheons for pipe penetrations of concrete and masonry walls, wall board partitions, and suspended ceilings.
