Building Construction

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  Thời Gian Còn Lại


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Corbels- A series of projections, each one stepped progressively outward from the vertical face of the wall as it rises to support a cornice or overhanging member above.","question_score_id":null,"lang":null,"questionAudioPath":null}]
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The standard fire test, NFPA 251, used to test building materials and assemblies, reaches 1000 degrees F in __________ minutes. (p. 207)

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