Scaffold planks must be secured and must extend over the end supports at least __________ inches, but not more than __________ inches.
a. 6, 24
b. 12, 24
c. 6, 18
d. 6, 12
d. 6, 12
Trades & Technology
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Which of the following is a material that is used to make tubing?
A. Alloys B. Plastics C. Copper D. All of the above
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Describe how a pneumatic timer works.
What will be an ideal response?
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What is the proper instrument for measuring runout?
A) Vernier caliper B) Dial indicator C) Inside micrometer D) Outside micrometer
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A gauge in a hydronic system reads 12 psi. What is the equivalent head pressure in feet of water?
a. 27.7 feet b. 5.2 feet c. 51.6 feet d. 48 feet
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