Th e usual spacing of open-web steel joists for fl oor and roof framing systems is _______________ center-to-center for fl oor systems and _______________ to _______________ center-to-center for roof systems.
Fill in the blank(s) with the appropriate word(s).
Th e usual spacing of open-web steel joists for fl oor and roof framing systems is 2'–0" center-to-center for fl oor systems and 4'–0" to 6'–0" center-to-center for roof systems.
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What will be an ideal response?
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Indicate whether the statement is true or false
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____________________ means to place the bottom number on top and the top number on the bottom.
Fill in the blank(s) with the appropriate word(s).
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Lanolin is an important ingredient in which two products?
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