- The primary purpose for plumbing pipes when passing through an arch, or pipe sleeve, or under a lintel, or through or under walls:
A. To provide accessibility for replacement of the pipes.
B. to protect against corrosion of the pipes.
C. To protect from breakage of the pipes.
D. To provide room for expansion of the pipes?
C. To protect from breakage of the pipes.
- The one part of a plumbing system where copper or copper alloy tubing (type K,L) is not permitted is:
A. Underground building drainage and vent pipe.
B. above-ground drainage and vent pipe.
C. Building sewer pipe.
D. Chemical waste system.
D. Chemical waste system.
- It is necessary to install a section of water distribution piping underground. The one material that shall not be used is most nearly:
A. Copper or copper-alloy pipe.
B. copper or copper-alloy tubing (type K,L).
C. Stainless steel pipe (type 304, 304L).
D. Galvanized wrought iron.
D. Galvanized wrought iron.
- A 1-inch water pipe is to be installed crosswise to wooden joists. The best location to cut the joists is most nearly:
A. More than 1.5 inches from the nearest edge of the member.
B. center of joists, halfway between support.
C. Top of joists, halfway between supports.
D. Bottom middle of joists?
B. center of joists, halfway between support.
- A standard screwed malleable fitting are usually designed to withstand internal pressures of most nearly:
A. 100 psi.
B. 125 psi.
C. 150 psi.
D. 250 psi
C. 150 psi.
- The installation of drainage street fittings are:
A. Permitted with commissioners’ permission.
B. Permitted as it conforms to screwed drainage specifications.
C. Not permitted as it restricts the flow.
D. Permitted only where there are space limitations.
B. Permitted as it conforms to screwed drainage specifications.
- Trench shall be free from discarded construction material and debris. Loose earth free from rocks, broken concrete and frozen chunks shall be placed in the trench in 6 inch layers and tamped in place until:
A. 12 inches above the invert of the pipe of tamped earth.
B. 6 inches above the invert of the pipe of tamped earth.
C. 12 inches above the center-line of the pipe of tamped earth.
D. The crown of the pipe is covered by 12 inches of tamped earth.
D. The crown of the pipe is covered by 12 inches of tamped earth.
- The one material that shall not be used in water distribution piping systems:
A. Brass pipe ASTM B 43.
B. Stainless steel pipe (Type 304/304L).
C. Copper or copper-alloy pipe ASTM B 42; ASTM B 302.
D. Galvanized iron pipe ANSI B36.20.
D. Galvanized iron pipe ANSI B36.20.
- Copper tubing Type K and L may not be used for:
A. Above ground drainage and vent pipe.
B. Underground building drainage and vent pipe.
C. Building sewer pipe.
D. Sub-soil drain pipe.
D. Sub-soil drain pipe.
- Escutcheons are metal collars are installed around exposed pipes passing through walls and floors to:
A. To prevent travel of pests along the pipes.
B. To permit expansion and contraction of the pipes.
C. To improve the appearance of the pipes.
D. To absorb the vibration of pipes.
A. To prevent travel of pests along the pipes
