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
Hanger used with a threaded rod attachment
Adjustable swivel rings
Hanger used to hang pipe from ceilings, beams or joists when attached to a threaded rod.
Clevis Hanger
What hanger is ideal for pipe which will have horizontal movement?
Clevis Hanger
What is used to provide solid support for copper or other types of pipe?
Epoxy coated pipe stay
What is used to hold pipe securely agains a surface?
U bolt
What hanger allows the movement of pipe during expansion and contraction?
Roller hanger
Roller hangers are mainly used for what?
Larger pipes
What is used to attach hanger rods to uni strut or channel?
Uni-strut spring nuts
Uni-strut clips are used with ____
Uni-strut
What is used to distribute piping loads over sufficient areas of insulation?
Insulation shields
What is used to suspend hangers form ceiling, walls, floor joists
Metal threaded rod
What is the smallest size rod for piping over 13mm (4” diameter)
1/2 “
What size rod is used for pipe under 4” diameter?
8mm (3/8”)
What is used to lengthen threaded rod?
Rod couplings
What is used to join two pieces of rod or coach screws together?
Turnbuckles
What is used to hang hanger or rods from wooden ceilings or joists?
Coach screw rods
What is used to secure pipelines to beams and channel iron where thickness do not exceed 3/4”
C clamps
Name 2 types of C clamp
Stamped/welded
Malleable iron
What is a yuck way of supporting smaller pipe to steel beams and joists?
Caddy clips
Name 4 types of concrete anchors
Drop in Red - Heads
Quick bolts
Lead anchors
Plastic anchors
