A room is 10X10X8. There are two outside walls, each 10X8, and one window, 24" X 36". The window is double glass, with sealed space between. The walls are framed with wood and 3-5/8" batts. The ceiling has 6" batt insulation. The temperature difference is 30 degrees F. What is the BTU loss due to volume?
Fill in the blank(s) with the appropriate word(s).
216
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Answer the following statement(s) true (T) or false (F)
One of the main considerations when installing a machine is the power source.
When JJ and Sons was awarded a contract to pour a skyscraper’s foundation, the father had to choose between two pieces of equipment needed to supplement pumping of concrete into foundation settings. Estimates are below. Both machines have an estimated 7-year useful life; however, MACRS depreciation is over a 5-year recovery period. The effective tax rate is 40%, and the after-tax MARR is 8% per year. Your father asked you, one of the sons, to recommend one machine. (a) Perform the analysis by spreadsheet using after-tax PW analysis, and (b) plot the CFAT curves.
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Answer the following statement(s) true (T) or false (F)
OSHA safety guidelines must be followed unless a trench is excavated in stable rock.
____________________ is tubing that contains individual insulated wires
Fill in the blank(s) with the appropriate word(s).