The recommended method for applying the first layer of a built-up roof to prevent seepage of tar into the
rafter spaces is to _____.
a. apply a layer of tar and allow it to dry before applying the first layer of felt
b. apply a dry layer of felt, followed by the first layer of tar
c. apply a layer of tar, followed by insulating boards that will absorb any excess tar
d. place a flexible membrane over the decking, followed by the first layer of felt and asphalt
b
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What is the approximate wind speed in a tornado? Explain why tornado wind speeds are not considered in determining the design wind speed for a location.
What will be an ideal response?
Upton Sinclair’s book, The Jungle, drew mass consumer attention in the early 1900s to:
a. the need for good air circulation in animal shelters b. the lack of disinfectants available for killing disease organisms c. poor meat handling and butchering practices d. outdated veterinary practices
Identify and state the historical significance of the "fourth party system".
What will be an ideal response?
Determine the slopes at A and B and the deflection at C in Figure P7.14. Express answers in terms of M, E, I, and L. Solve by the moment-area method. EI is constant.
