Give three methods for controlling the exotherm in casting. Explain how they work
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Three ways that an exotherm can be controlled during casting include air, water, and pressure. Higher pressure causes the foam to cure slower, so the higher the pressure that is within the cast, the more control you have. Also water and air help cool the exotherm to aid in creating a better part with less cracking capabilities. Cooling the exotherm also causes it to cure slower.
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What is the distance between station points along a route survey?
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The total approximate gravity load on a floor in a typical wood frame residential building is
A) 10 psf. B) 30 psf. C) 50 psf. D) 5 psf. E) none of the above.
22°55' + 8°19' =
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If a calculator does not contain an nth root key, the nth power key can be used by raising the number to the reciprocal of the power.
Answer the following statement true (T) or false (F)