Explain masonry curtain wall backup walls.
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Masonry curtain walls typically have a backup wall, often concrete masonry units or steel studs. The back up wall is non-load-bearing and supports the sheathing, insulation, and air and vapor barriers, as well as the interior finish materials. The curtain wall is affixed to the backup wall with masonry ties. Ties are stiff but can flex enough to accommodate differential movements between the veneer and the backup wall.
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What is the difference between a detailed estimate and a square-foot estimate?
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UPS battery back-up systems in hospitals _________________
A. are used to power the hospital's entire load during a blackout B. are used to reduce peak demand C. are used to start emergency generators during a power outage D. are used to provide power during the transition period which is the time it takes for an emergency generator to start and come on line
Generally, microprocessor chips do not include
A) RAM. B) instruction decoding. C) an ALU. D) registers.
During the power stroke, when must the air/fuel charge be fully ignited in order for maximum combustion pressure and power production to occur?
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