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Question 1

What is the first step in locating corner stakes for a building?

Answer 1

Establish a baseline

Question 2

How do you use 3-4-5 rule to establish a 90-degree corner?

Answer 2

Measure out along the reference line four feet, measure the opposite line 3 feet, then measure between those two points. If the distance is 5 feet, you don’t have a 90 degree corner and you’ll have to adjust the angle between the lines accordingly.

Question 3

Roughly how far from the building’s outside corners do you place the batter boards and why?

Answer 3

Minimum of 4 feet; so equipment operators and builders can do their work.

Question 4

What’s the customary allowance for a working space for constructing forms?

Answer 4

2 feet

Question 5

What do you use to clean rock or concrete surfaces before you place fresh concrete on them?

Answer 5

Stiff brooms and compressed air or water.

Question 6

Why do you moisten a clay subgrade before you place fresh concrete on it?

Answer 6

To help subgrade from extracting moisture from the concrete.

Question 7

Before you place concrete on a sand or gravel subgrade, what do you use to keep from extracting moisture from the mix and making the concrete set too fast?

Answer 7

Burlap, tarpaper, or polyethylene. Overlap the burlap and moisten it, lap the tarpaper at least an inch, and lap the polyethylene at least 12 inches.

Question 8

What problems could a puncture in the vapor barrier cause?

Answer 8

Moisture could get trapped between the concrete and the barrier, resulting in shifting, cracking or splitting.