Determine routing of pipe and location of such plumbing fixtures, accessories and equipment as inlets, vent pipes, valves, meters, gauges, hangers, brackets and water, sewer, gas and air connections by following and adhering to trade practice specifications, blueprints, sketches and codes. Perform at a journeyman level to install, repair, assemble and maintain water, sewage, drainage, air, gas, and vacuum systems and related heating equipment in accordance with blueprints, specifications, established practices and pertinent state and local codes.