Masonry and Plumbing-MN 2019

Question 1

Overlap of reinforcing bar should be at least _______ times the diameter of the re-bar and no less than
12 inches

Answer 1

24 times

Question 2

When mixing cement a mix ratio of 1-2-3 will contain what?

Answer 2

1 part cement, 2 parts fine aggregate, and 3 parts course aggregate

Question 3

A bag of Portland cement is how much material?

Answer 3

1 cubic foot of material

Question 4

The chemical reaction which turns concrete from a plastic to a hardened state is known as

Answer 4

Heat of Hydration

Question 5

Concrete that is kept moist for three days will be _______ percent stronger than concrete that has been
air cured after placement.

Answer 5

25%

Question 6

A slump test in cement is designed to do what?

Answer 6

Check consistency of the mix

Question 7

Galvanized steel pipe has a coating of ____________ on the outside to prevent rusting

Answer 7

Zinc

Question 8

A properly soldered copper joint, using lead-free solder, is how strong when compared to the pipe itself

Answer 8

Equal Strength

Question 9

Plastic pipe that will handle both cold and hot water applications is labeled:

Answer 9

CPVC

Question 10

Is galvanized steel used for PEX fittings?

Answer 10

NO