What are the requirements for the proper width of scaffold platforms?
What will be an ideal response?
Scaffold platforms and walkways must be at least 18 inches wide except for ladder jack, top plate bracket, and pump jack scaffolds which may be 12 inches wide. In areas too narrow to accommodate an 18-inch wide platform or plank, the walking surface must be as wide as possible and workers must be protected by either guard rails or personnel fall arrest systems.
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A(n) ____________________ representation depicts in one plane, such as a sheet of paper, many images of the same object, each viewed from a different direction.
Fill in the blank(s) with the appropriate word(s).
What design principles should you consider when designing something to be controlled by the hand?
What will be an ideal response?
Why should the water flow be checked before checking other system operating characteristics?
A) A low flow rate introduces too much air into the system. B) The flow rate affects the other system operating characteristics. C) The system will not function at all with an incorrect flow rate. D) A system operating with a low flow rate may require additional refrigerant.
When should lockout/tagout be removed?
A. before maintenance B. after maintenance and before verification of indicators C. after verification of indicators D. never