The accepted rule for determining the angle of a jack arch states that "the skewback angle should be _____ of span of the opening for each 4" of arch depth."

A. ¾' per yard
B. ½' per yard
C. ¾" per foot
D. ½" per foot


Answer: D

Trades & Technology

You might also like to view...

For success, the scion should be at least _____

A) 1 year old B) 2 years old C) 3 years old D) 4 years old

Trades & Technology

To use a registered E.P.A disinfectant to disinfect implement, you should:

What will be an ideal response?

Trades & Technology

A rear main seal is designed to keep coolant from leaking out of the engine.

Indicate whether the statement is true or false

Trades & Technology

Before a program can be developed for input into a programmable logic controller, it is recommended, but not necessary, to assign which devices connect to the input and output terminals.

Answer the following statement true (T) or false (F)

Trades & Technology