Why is an air-weather barrier (AWB) not required on flat roofs?

What will be an ideal response?


The roofing membrane on a flat roof, by virtue of its being water resistive, also functions as an AWB.

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What type of valves are used in service as single-direction flow control?

A) Check valves B) Actuated valves C) Pressure relief valves D) Manually operated valves

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Modular design refers to the ability of the production plant to build the same design engine in different configurations.

Answer the following statement true (T) or false (F)

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When working on a type of system that you have never seen before, you should

A) assume that it works like other equipment you are familiar with B) methodically replace the parts until you locate the issue C) locate the manufacturer's troubleshooting guide D) replace any electronic boards first

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To prevent the spread of smoke and fire, fire dampers are designed to close

A) all the time except when the system is operating B) using the NO contacts of the fire alarm relay C) automatically D) manually

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