¿Cuál de los siguientes materiales ya no se utiliza?
a. Asbestos.
b. Fibra de vidrio.
c. Silicato de calcio ("kaylo").
d. Colcha mineral.
a. Asbestos.
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Explain how the Boeing 787 project was diff erent from any other and why it is signifi cant. As needed, use the Web to research articles on the Boeing 787.
What will be an ideal response?
In energy-saving construction, a piece which normally provides a nailing surface for the interior ____ is replaced by metal clips.
A. plate B. subfloor C. drywall D. rafter
(a) Draw the influence lines for the bar forces in members HC, HG, and CD of the truss shown in Figure P12.32. The load moves along the bottom chord of the truss. (b) Compute the force in member HC if panel points B, C, and D are each loaded by a concentrated vertical load of 12 kips.
There are ____p radians in a circle.
A. 1/2 B. 1 C. 2 D. 4