BAT Blueprint Reading & Interpretation 4

Question 1

A plumbing drawing uses a scale of 1/8" = 1'-0". If a pipe run measures 3 inches on the drawing, what is the actual length?

Accepted Answer

24 feet

Answer

At 1/8" = 1'-0", each inch on the drawing equals 8 feet, so 3 inches × 8 = 24 feet of actual pipe.

Question 2

A detail drawing of an RPZ installation shows a 'RELIEF VALVE DRAIN' line directed to a floor drain with an 'A.G.' notation. What does 'A.G.' mean?

Accepted Answer

Air gap

Answer

A.G. on plumbing drawings stands for Air Gap, specifying that the relief valve discharge must terminate above the flood rim of the drain with an unobstructed air gap.

Question 3

On a site plan, contour lines that are closely spaced near a backflow preventer vault indicate:

Accepted Answer

A steep slope that may require special drainage consideration

Answer

Closely spaced contour lines represent a steep grade change, which affects vault drainage design and surface runoff management.

Question 4

A drawing revision cloud with a delta symbol (Δ) and the number '3' indicates:

Accepted Answer

The enclosed area was changed in revision 3

Answer

Revision clouds with delta symbols mark areas of change, and the number identifies which revision introduced that change.

Question 5

On a plumbing legend, a symbol showing a circle with a diagonal line through it next to the letters 'PVB' represents:

Accepted Answer

A pressure vacuum breaker assembly

Answer

PVB is the standard abbreviation for Pressure Vacuum Breaker, a type of backflow preventer used for irrigation and non-continuous pressure applications.

(BAT) Backflow Assembly Tester Certification Practice Test

(BAT) Backflow Assembly Tester Certification Practice Test

BAT Blueprint Reading & Interpretation 4