1. Chapter 18
Plumbing Plans

2. Schedules and Drawings
Links for Chapter 18
Introduction
Schedules and Drawings
Water and Sewage
Commercial Plumbing
Related Web Sites

3. Introduction
Industrial plumbing carries liquids and gases used to manufacture products
Residential plumbing carries fresh water, gas, or liquid and solid waste
Pipes are made of copper, steel, cast iron, or plastic

4. Pipe Types Plastic pipe Copper pipe
Glued and is commonly called PVC or CPVC
For fresh water and waste
Copper pipe
Joints are soldered
For hot or cold water

5. Pipe Types Steel pipe Cast iron
For large water distribution and natural gas
Fittings are threaded
Cast iron
For solid and liquid waste as sewer pipe
More quiet than plastic pipe

6. Sizing Pipe Requirements
Size of water supply based on:
Amount of required water
Supply pressure
Pipe length
Number of stories
Flow pressure at farthest point from source

7. Energy Conservation Insulate hot water pipes
Run water pipes in insulated spaces and in the interior
Locate water heater in heated space
Select low-flow showerheads
Caulk water pipes and drains at plates
Seal all wall penetrations

8. Universal Plumbing Sinks Water Closet
Reachable from a wheelchair (about 34”)
About 6” deep
Use single-level or automatic faucets
Water Closet
Keep 42” of clear space beside the toilet
Use elongated bowl about 15” to 19” high

9. Universal Plumbing Bathtub Showers Use single-lever controls
At least 60” long with a 15” seat
Add a slip-resistant bottom and handles
Showers
Minimum length is 60” and width is 30”

10. Plumbing Schedules
Specific information is given about the location, item, manufacturer and remarks for each fixture
Each item must be carefully specified to avoid potentially costly errors
Schedules should be located near plumbing plans

11. Plumbing Drawings Use a different sheet or layer for drawings
Fixtures can be place on floor plan drawing
Draw plumbing lines thicker than wall lines
Break lateral lines if they cross over others
Sizes and specifications given as notes

12. Plumbing Drawings

13. Water Systems
Water supply to the home is the main line and is 1” plastic pipe
From main line to fixtures, 1/2” pipe is used
Place plumbing fixture above each other
Water heaters are placed on a platform and are gas, oil, solar flat-plate collectors or electric

14. Water Systems

15. Drainage and Venting
Drainage system allows the solid and liquid waste to move to the sewer line
Minimum slope of 1/4” per foot is required
Vent system allows air to flow so gases dissipate and a vacuum is not created
Use 3” or 4” pipe for drainage

16. Isometric Plumbing Drawings
Also called a plumbing riser diagram
Shows a three-dimensional representation of the plumbing layout

17. Sewage Disposal Public sewers are located under a street
Septic systems contain a storage tank and absorption field for dispersion of liquids
Percolation tests are used to determine if the soil is accommodating
Sand filter systems are used if the soil is not appropriate for a leach field

18. Sewage Disposal

19. Commercial Plumbing Fittings and lines must be clearly shown
Symbols are used to indicate the pipe contents
Pipe size is given with a leader or note
Elevation of the pipe is given in feet and inches with an abbreviation
Legends are given to show special symbols

20. Plumbing CADD Symbols

21. Plumbing CADD Symbols

22. Related Web Sites American Standard - www.americanstandard.com
Aqua Glass -
B F Goodrich -
Nibco -