1. Two pieces of 1-1/2 inch waste lead was to be joined together. The total thickness of the joint (solder) and lead at its widest is most nearly: A. 1-3/4 in. B. 2-1/4 in. C. 2 in. D. 2-3/4 in ?
D. 2-3/4 in.
1-1/2+ 2x1/8+2x1/8+2x3/8=2-3/4 in
Where 3/8 in. wiping beed thickness.
C. To protect from breakage of the pipes.
D. A,B &C.
4. The minimum inside diameter of a four (4") inch caulking ferrule is most nearly: A. 4 in. B. 4-1/4 in. C. 4-3/8 in. D. 4-1/2 in?
B. 4-1/4 in.
It fit lead pipe: 4+2x1/8=4-1/4”.
D. Chemical wast system.
6. The minimum weight percentage of antimony required in a lead alloy water closet floor flange is most nearly: A. 5-5/8%. B. 7-3/4%. C. 11-1/2%. D. 9-3/8%?
B. 7-3/4%.
7. In any borough (except Manhattan), building (house) sewer shall be a minimum size of: A. 4 in. B. 5 in. C. 6 in. D. 8 in.
C. 6 in.
C. Building house sewers.
9. Cleanout plugs shall be of brass and have a minimum thickness of at least: A. 1/16 in. B. 1/8 in. C. 3/16 in. D. 1/4 in?
B. 1/8 in.
D. Galvanized wrought iron.
11. The minimum outside diameter of a 4-inch lead bend is most nearly: A. 4 in. B. 4-1/8 in. C. 4-1/4 in. D. 4-3/4 in?
C. 4-1/4 in.
4+2x1/8=4-1/4”.
B. center of joists, halfway between support.
A. Cast-iron pipe.
B. copper or copper-alloy tubing (type K, L).
C. Ductile iron.
D. Non-asbestos fiber cement.
E. Polyvinyl chloride (PVC) plastic pipe in IPS diameters.
F. Stainless steel drainage systems.
A - L?
A. Acrylonitrile butadiene styrene (ABS) plastic pipe in IPS diameters. B. brass pipe. C. Cast-iron pipe. D. Copper or copper-alloy pipe. E. copper or copper-alloy tubing (type K, L). F. Ductile iron. G. Galvanized steel pipe. H. Glass pipe. I. High silicon cast iron. J. Polyolefin pipe. K. PVC plastic pipe. L. Stainless steel drainage systems.
15. A four (4") inch lead bend that is 30 inches long meeting the minimum requirements, weights most nearly: A. 24 lbs. B. 20 lbs. C. 16 lbs. D. 12 lbs. ?
B. 20 lbs.
weight in pounds = (2x diameter)xLength in feet =
2x4x30/12 = 20 lbs.
16. The minimum depth of cast-iron floor flange shall be most nearly: A. 2-1/2 in. B. 3-1/2 in. C. 3 in. D. 2 in.
D. 2 in.
17. A lead shower pan having the minimum weight requirements is to have its edges welded with ears forming its corners. The minimum thickness of the lead joint is most nearly: A. 1/16 in. B. 1/4 in. C. 1/8 in. D 3/16 in.
D 3/16 in.
18. Lead should not be used as a material for: A. Roof flashing. B. shower base. C. Water piping. D. Caulking.
C. Water piping.
19. A pipe that has a high percentage of sillicon is generally used for: A. Oil separation system. B. Acis waste system. C. Sub-soil drainage. D. Swimming pools?
B. Acis waste system.
B. Extea heavy cast iron soil pipe.
21. A shower pan, with ears forming the corners, has the dimensions 30"x30"x3", the minimum weight of sheet copper usednfornthisnpan is most nearly: A. 5-3/4 pounds. B. 4-3/4 pounds. C. 8 pounds. D. 6-1/2 pounds.
C. 8 pounds.
36x36x.75/144=8 lbs.
22. An equivalent discount of 30%,12%, and 5% is most nearly: A. 31.5%. B. 53.0%. C. 41.5%. D. 58.5%?
C. 41.5%.
ED=.7x.88x.95-1.00=0.4148
0.4148x100%=41.5%.
23. A standard screwed malleable fitting arenusually designed to withstand internal pressures of most nearly: A. 100 psi. B. 125 psi. C. 150 psi. D. 250 psi?
C. 150 psi.
24. If a sheet copper pan fitted into a shower that measures 12 square feet, the minimum total weight of the sheet copper, allowed by code, is most nearly: A. 6 lbs. B. 9 lbs. C. 12 lbs. D. 48 lbs?
B. 9 lbs.
12x 75=9 lbs.