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Friction loss

Friction loss or static head in sizing of air ducts is given in this expression of units: A. pounds per square inch B. inches of water per 100 feet C. inches of refrigerant per 100 feet D. inches of water per foot Answer B. inches of water per 100 feet ARE 4.0 exam prep: BS
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Systems costs

In a small office building (20,000sf), what is a reasonable breakdown of mechanical and electrical systems by percentage of total budget (projected cost = $2.5 million)? A. mech 10% / elec 5% B. mech 15% / elec 10% C. mech 20% / elec 10% D. mech 10% / elec 10% Answer D. mech 10% / elec 10%. A typical small office building project allocates equal percentages on mechanical and electrical systems for a total of 20% of the projected costs. ARE 4.0 exam prep: BS
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Bolted connections

What is the minimum spacing of bolts specified by AISC? and preferred spacing? A. 1 1/4 times the diameter of the bolt; 2 times preferred B. 1 3/4 times the diameter of the bolt; 2 1/4 times preferred C. 2 1/3 times the diameter of the bolt; 2 2/3 times preferred D. 2 2/3 times the diameter of the bolt; 3 times preferred E. 3 times the diameter of the bolt; 3.25 times preferred
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