Insulating concrete and foamed concrete are two types of insulating concrete that can be used as insulation on a steel roof deck. Is the steel deck used under such concrete required to be a special type of steel deck and why?
What will be an ideal response?
The steel deck used with insulating concrete must be a slotted deck to allow the water in concrete to evaporate from
the underside of the deck because being a watery mix, it has a lot of water. Foamed concrete does not contain as
much water. Although a non-slotted deck may be used with foamed concrete, the use of slotted deck is preferred.
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The ________ door is used to select air discharge location, such as floor, vent, or defrost.
A) Recirculation B) Mode C) Fresh air D) Any of the above
Use Henry’s law to calculate the concentration of dissolved carbon dioxide (or inorganic carbonates) in a raindrop during the Ordovician Epoch. The atmospheric concentration of carbon dioxide were 2240 ppmv CO2. Assuming pressure at sea level was 1 atm and the water temperature was 20oC.
What will be an ideal response?
Most lawn grasses grow best in a well-limed soil with which pH level?
A) 5.0-5.5 B) 5.5-6.0 C) 6.0-6.5 D) 6.5-7.0
Evaluate: 11,231 ×564
Fill in the blank(s) with the appropriate word(s).