Two-way beam-and-slab floors normally require support by beams and walls _____.
a. along the perimeter and midline of the slab
b. at 20-foot intervals across the shortest dimension
c. only at the perimeter
d. at 20-foot intervals across the longest dimension
c. only at the perimeter
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Heat transfer is improved from the coolant to the air when the ________.
A) Temperature difference is small B) Coolant is 95% antifreeze C) Temperature difference is great D) Both A and C
In cold climates, the planter may be lined with compressible ___________, which allows the earth in the planter to expand as it freezes, without cracking the planter.
A. weep holes B. polyethylene C. waterproof membrane D. plastic foam
A window frame manufacturer is searching for ways to improve revenue from its triple-insulated sliding windows, sold primarily in the far northern areas of the United States. Alternative A is an increase in TV and radio marketing. A total of $300,000 spent now is expected to increase revenue by $60,000 per year. Alternative B requires the same investment for enhancements to the in-plant manufacturing process that will improve the temperature retention properties of the seals around each glass pane. New revenues start slowly for this alternative at an estimated $10,000 the first year, with growth of $15,000 per year as the improved product gains reputation among builders. The MARR is 8% per year and the maximum projection period is 10 years for either alternative. Use (a) payback
analysis, and (b) present worth analysis (for 10 years) to select the more economical alternative. State the reason(s) for any difference in the alternative chosen between the two analyses. (c) Find the payback and present worth values using a spreadsheet. What will be an ideal response?
The automotive braking system stops the vehicle by absorbing ________ from the car
A) Energy B) Moisture C) Vacuum D) Friction