Builders Level

Question 1

What do the location and elevation of a benchmark shown on a site plan denote?

Answer 1

The base point from which all levels are measured.

Question 2

What’s the most commonly accepted method of retaining a benchmark in a concrete slab?

Answer 2

A brass plug.

Question 3

Where is an invert elevation taken at?

Answer 3

The bottom inside of the pipe.

Question 4

What’s the function of stadia hairs?

Answer 4

To measure distance.