Piping Drawings Questions

Piping materials selection: Which pipe materials are commonly used for water, steam, oil, and gas service in general industrial and building applications?

Pipe jointing practice: Which types of service pipes are commonly connected using bell-and-spigot joints or flanged joints in building and municipal work?

Piping drawing conventions: Which drawing style shows a pipe with two parallel lines representing the actual outside diameter and wall thickness rather than a single centerline?

Pipe material usage: Which pipe type is commonly used for water or gas service and is also widely used as a soil pipe in building drainage systems?

Dimensioning practice for piping layouts: When dimensioning piping drawings, you should give the lengths of all runs of which type?

Nonferrous piping choice: Which material is commonly selected for applications requiring nonferrous construction due to corrosion resistance and ease of fabrication?

Piping drawing methods: In which type of piping drawing may vertical pipes be revolved into the horizontal plane to show true lengths and facilitate measurement?

Piping graphics — Are axonometric views (especially isometrics) rarely used in piping documentation, or are they actually common and valuable for routing and fabrication?

Construction materials — Is it accurate that a wide range of plastic pipe types, in both rigid and flexible forms, are used across building services and construction applications?

Piping representation — In single-line piping drawings, is the pipe represented by its centerline rather than by a double-line wall thickness depiction?

PVC joining methods — Are common PVC pipe joints made by solvent-cemented or gasketed/threaded connections rather than by flared joints or soldered joints?

Projection choices — Besides isometric/axonometric views, can piping also be shown using standard orthographic projection (plans, elevations, and sections) when clarity requires?

Material suitability — Is it correct to say copper tubing is not suitable for process work, plumbing, or heating systems, or is copper actually widely used across these applications when properly specified?

Piping practice and joint methods: Are joints between pipes, fittings, and valves limited to screwed (threaded) or flanged connections only, and therefore not permitted to be welded, brazed, or soldered in typical piping systems?

Fundamental function: In piping systems, are valves used to stop, start, throttle, or otherwise regulate the flow of fluids (liquids or gases) through a pipeline or piece of equipment?

Material behavior: Is the statement accurate that copper pipe is brittle and therefore prone to fracture from building settlement unless joints are highly flexible?

Developed piping drawings: Can horizontal pipe runs be revolved into the vertical plane (development) so the entire installation is represented on a single plane for clarity and dimensioning?

Plumbing materials: Are brass and copper pipes used in building plumbing for supply lines and for soil, waste, drain, and vent (DWV) applications, with selection depending on code and service conditions?

Galvanic compatibility: Should brass and copper pipes be joined with copper-base alloy fittings (or otherwise compatible materials) to minimize galvanic corrosion and ensure long-term reliability?

Dimensioning requirement: In piping drawings (plan, elevation, isometric, or developed), is it acceptable to omit pipe sizes, or should the size of each pipe/run be clearly indicated to avoid ambiguity in fabrication and procurement?