Explain what fire resistance is and give an example.
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A material of low combustibility is said to be fire resistant. For example, a firebrick in a fireplace must withstand temperatures of up to 2000 degrees Fahrenheit. An emphasis on the resistance to fire is a large component of building code constraints. Fires create indoor air-quality problems and can result in structural failure.
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In a typical CMU wall, face -shell mortaring is used. This implies that the mortar is placed _______.
A) on the horizontal and vertical surfaces of the face shells. B) on the vertical surfaces of the face shells only. C) only on the horizontal surfaces of the face shells. D) on the horizontal surfaces of the face shells as well as the webs.
The careful planning of equipment working together is referred to as _____.
a. logistics b. good planning c. supervision d. coordination
A fin straightener, also commonly known as a __________, is used to straighten the aluminum fins on condenser or evaporator coils that have become bent or slightly damaged.
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How many 1-cubic-foot size bags of masonry cement can be mixed using 32 cubic yards of sand?
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