The Accepted Rule for Determining the Angle of a Jack

question 4

Multiple Choice

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

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Definitions:

Recency Effect

A memory phenomenon that involves the ability to recall the last items in a series better than those in the middle.

Summary

A brief statement or account of the main points of something.

Mnemonist

An individual with the ability to remember vast amounts of information, sometimes with the help of advanced mnemonic techniques.

Hypnotist

A practitioner who induces a state of consciousness in a person in which they purportedly lose the power of voluntary action and become highly responsive to suggestion or direction.