Why are overhanging beams commonly used in the design of structural steel support frames for building roofs?
What will be an ideal response?
Overhanging beams are widely used in commercial and industrial buildings where negative bending moments produced by the overhang tend to off set the positive bending moment developed by load between the supporting columns. This makes the positive bending moment less than it would be if the beam were simply supported at each end, which in turn allows the draft er or designer to use a lighter, and thus more economical, beam.
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In the standard welding system, the ____ connects the reference line to the joint or area to be welded.
A. tail B. arrow C. header D. trailer
Steam turbines are driven by the pressure of high-velocity ______ discharged at a high pressure and temperature against the turbine vanes.
a. air b. water c. gas d. steam
The exterior walls of a building may pose a fire hazard to the adjacent building within the same lot or across the property line. Therefore, an exterior wall's minimum required fire rating is a function of its distance from the adjacent building, defined as fire separation distance (FSD) by the International Building Code. What is the required minimum value of FSD for a non-load-bearing wall
(such as a glass curtain wall) so that the wall's fire rating may be zero? What will be an ideal response?
When hand-finishing drywall, the step preceding taping is _____
a. applying compound to the joints b. countersinking all fasteners c. spotting the fastener heads d. priming the drywall surface