Fixtures and equipment
Water closets, urinals, lavatories, sinks, showers, mop basins, drinking fountains, bottle fillers and emergency fixtures are counted from the fixture schedule and plans with carriers, supplies, stops and trim. Water heaters, booster pumps, recirculation pumps, expansion tanks and backflow preventers are listed from the equipment schedule.
Domestic water
Cold, hot and hot water return piping is measured by material, whether copper, PEX, CPVC or other, and by size, with valves, hammer arrestors, mixing valves and insulation included as specified.
Sanitary waste and vent
Underground waste piping, above-ground waste and vent, stacks and vent-through-roof penetrations are measured by material and size from the plans and riser diagrams, with cleanouts and floor drains counted separately.
Storm drainage
Roof drains, overflow drains, conductors, horizontal storm piping and connections to site storm are taken off and coordinated with the roof plan and civil drawings.
Gas piping
Natural gas and propane piping is measured from the meter to each appliance by size and material, with regulators, valves and connections to mechanical and kitchen equipment.
Specialties and testing
Grease interceptors, oil separators, trap primers, pipe insulation, sleeves, firestopping at penetrations, disinfection and pressure testing are priced so nothing is left to change orders.