Unit 13 Plumbing Prints

Objectives Identify various piping systems. Recognize plumbing fixture symbols on prints. Explain the three stages of plumbing installation. Read a piping diagram. (Charles E. Smith, Areté 3 Ltd.)

Stages of Plumbing Installation Done prior to pouring foundation Provisions for service entrance made Provisions for sewer drain made Stage 2 Completed prior to slab-on-grade construction and wall coverings Rough-in plumbing Installation of water supply and sewage drain pipes Stage 3 Done after walls and floors are finished Finish plumbing Installation of fixtures

Stage 1 (Goodheart-Willcox Publisher)

Stage 2 (Goodheart-Willcox Publisher)

Water Distribution System Main supply line from municipal meter or other supply source All pipes that distribute water to service outlets: Water heater Sinks Water closets Hose bibbs Control valves

Water Distribution System (Herndon Engineering Services, Inc.; CR architecture + design)

Water Distribution Piping Materials Copper piping Galvanized steel pipe Plastic pipe Copper and plastic are most common for residential installations

Tankless Water Heaters Green Building Tankless Water Heaters Produce instant hot water Last longer and require less energy Water is heated only as needed More than one needed in large homes

Copper Piping Available in: Should not be embedded in concrete Heavy, medium, and light wall thickness Hard or soft tempers Should not be embedded in concrete Should never come in contact with other metals Pipe joints are either sweated or threaded

Galvanized Steel Pipe Has great strength and dimensional stability Coating protects against rusting Three grades available: S—Standard weight XS—Extra strong XXS—Double extra strong Standard weight used for most residential and light commercial distribution systems

Plastic Pipe Used extensively in plumbing installations Typically rated according to wall thickness and ability to carry hot water Joints may be threaded, solvent welded, or connected using special fittings

Types of Plastic Pipe Polyvinyl chloride (PVC) Used for cold water supply piping and sewage piping Chlorinated polyvinyl chloride (CPVC) Used for cold and hot water supply piping Cross-linked polyethylene (PEX) Flexible, lightweight tubing Acrylonitrile butadiene styrene (ABS) Used for sewage piping

Sleeves Used when copper pipe passes through concrete slab or masonry wall Copper run through plastic sleeve or larger pipe Larger pipe allows movement due to expansion and contraction

Isometric Plumbing Drawing (Charles E. Smith, Areté 3 Ltd.)

Plumbing Symbols (Goodheart-Willcox Publisher)

Sewage Disposal System Also known as DWV (drain/waste/vent) system Includes: Vertical soil stack Vent Trap for each fixture Cleanouts at the base of each waste stack

Plumbing Codes Uniform Plumbing Code International Plumbing Code Code provisions include: Kinds and sizes of pipe to be used Locations of traps and cleanouts Fixture requirements Venting provisions Connections to supply and sewer lines Leak testing conducted on supply and waste lines

Careers in Construction Mechanical Trades Many opportunities for employment Plumbers, electricians, and HVAC technicians Requires specialized training 3–5 years on-the-job and classroom training Requires knowledge of reading prints and building codes

Test Your Knowledge Take 10 minutes to complete the Test Your Knowledge Questions in the textbook.

Test Your Knowledge Answer Key 1. False 2. D. rough-in plumbing stage 3. True 4. False 5. C. Hose bibb A. Gate valve B. Floor drain D. Hot water supply 6. False

Test Your Knowledge Answer Key 7. False 8. B and C 9. D. Cleanout 10. C. Copper tubing

Activity 13-1: Plumbing Plans for a Residential Building Project Take 20 minutes to complete Activity 13-1 in the textbook.

Activity 13-1 Answer Key 1. 4″ [Print MAR-3—Sheet MP2—Foundation Mechanical/Plumbing Plan] 2. An open circle [Print MAR-5—Sheet MP3—First Floor Mechanical/Plumbing Plan] 3. 3″; by the water heater [Print MAR-3—Sheet MP2—Foundation Mechanical/Plumbing Plan]

Activity 13-1 Answer Key 4. MP4 [Print MAR-7—Sheet MP4—Second Floor Mechanical/Plumbing Plan] 5. A. 1 1/2″ B. 3″ C. 2″ [Print MAR-5—Sheet MP3—First Floor Mechanical/Plumbing Plan]

Activity 13-1 Answer Key 6. 3″ [Print MAR-7—Sheet MP4—Isometric of Drainage System] 7. The left side [Print MAR-3—Sheet MP2—Foundation Mechanical/Plumbing Plan] 8. Three

Activity 13-2: Plumbing Plans for a Commercial Building Project Take 20 minutes to complete Activity 13-2 in the textbook.

Activity 13-2 Answer Key 1. Mechanical room (101) [Print DEL-23—Sheet P1.1—Plumbing Plans] 2. A. 3/4″ B. 1 1/2″ C. 2″ D. 3/4″ 3. 10 gallon 4. Visit the site [Print DEL-24—Sheet P2.1—Plumbing Plans]

Activity 13-2 Answer Key 5. P2.1 [Print DEL-24—Sheet P2.1—Plumbing Plans] 6. A. 3″ B. 4″ at four locations; 3″ at two locations C. 3″ 7. A. American Standard 3451.128 with Sloan Optima valve; floor mount B. Woodford 65; anti-siphon; cast iron C. Oasis P8AC with glass filler; ADA compliant

Activity 13-2 Answer Key 8. 4″ [Print DEL-23—Sheet P1.1—Plumbing Plans] 9. 4″ 10. 1/8″ per foot slope