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16 questions from the general building trade knowledge practice test.
10 questions, graded as you go, with the reason for every answer. No sign-up.
On a floor plan drawn at 1/4 in. = 1 ft 0 in., a wall measures 3-1/2 in. long. How long is the actual wall?
Answer in ft.
14 ft
Each 1/4 in. is 1 ft, so there are 4 ft to the inch. Length = 3.5 x 4 = 14 ft.
Reference: Plan reading: architect's scale
On a site plan drawn at 1 in. = 20 ft, a property line scales 3.75 in. How long is the line?
Answer in ft.
75 ft
Length = 3.75 in. x 20 ft per inch = 75 ft.
Reference: Plan reading: engineer's scale
A dimension written on a drawing disagrees with the length obtained by scaling the drawing. Which is normally followed?
C. The written dimension
Figured dimensions take precedence over scaling, because prints stretch and are reproduced at different sizes. If the written dimension itself looks wrong, the answer is an RFI, not a scale.
Reference: Plan reading: dimensioning conventions; contract general conditions