Pipe Supports And Hangers Flashcards
What is the purpose of a hanger.
To keep pipe In alignment and to carry the weight of the pipe and contents.
What must a hanger allow for?
Allow pipe to expand and contract separately from the building or soil.
Copper pipe must be protected from ____ ______
Steel hangers, electrolysis
How do you protect copper pipes from steel hangers and electrolysis?
- Copper plated steel hangers
- Plastic
- Rubber
- Any other suitable material designed to prevent the transmission of electrical current
Vertical piping shall be supported and anchored no further apart than _______
Every other floor or every 7.5m (24-7”) whichever is less
What is a riser clamp?
A device that sits on the floor and allow pipes to pass through them.
Name 3 supports for vertical piping
- Riser clamps
- U bolts
- Uni strut and clamps
Horizontal supports or hangers shall never be more than _____ apart inside a building
2.5 m(8’-2”)
How should lead pipe be supported?
Throughout its entire length
Cast iron soil pipe shall be supported at or adjacent to each hub or joint not exceeding ______
3m(9’-10”)
Plastic DWV shall be supported at intervals not exceeding
1.2m(3’-11”)
Plastic water pipe shall be supported at intervals not exceeding
1m
Hard tempered copper piping shall be supported in intervals not exceeding
3m (9’-10”) for larger than 1” pipe
2.5 m (8’-2”) for under 1” pipe
Soft copper must be supported at a maximum of
2.5m (8’-2”)
Galvanized or steel pipe 6” or larger shall be supported at intervals not exceeding
3.75 m (12’-4”)
Galvanized or iron pipe under 6” shall be supported at intervals not exceeding
2.5 m (8’-2”)
All underground piping must be laid
On a firm base for its entire length
Backfill shall be free of
Stones, boulders, cinders, and frozen earth.
All piping must be protected from ____
Frost
Metal piping passing through corrosive materials like cinders or foundry sand shall be coated with ______
Bituminous material
4 guidelines for selecting a hanger
- The size, material and weight of the pipe when full
- The position which the pipe is to be installed
- The type of building construction
- Pipe coverings and thickness of insulation
What type of ya get has perforated holes?
Strap hanger
What is the largest pipe that can be hung with a strap hanger?
4”
Hanger used to hang pipe away from ceiling, floor, joists or beams
Band hanger
