All water piping shall be installed in such a way that all circuits can be completely
drained off and all air pockets in the water circuits shall be suitably vented.
Clearance between pipe works and equipment or machinery shall be adequately
provided to facilitate maintenance. Overhead clearance shall be at least 600 mm.
over access ways, and where possible the projection of valve stems into access
ways shall be avoided. Pipe works and pumps shall be so arranged that the
removal for maintenance of the equipment can be carried out with minimum
dismantling. Provision of all pipe fittings and accessories necessary for the
efficient functioning of the various systems shall be included.
Pipes shall be installed in continuous lengths as long as possible. Except where
required to be connected to fitting outlets or headers, they shall be joined by
welding, solvent welding, screwing or soldering as approved or indicated in the
Specification.