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21 February, 07:21

Beams used in Heavy Timber construction are sometimes firecut. This is done to: a) allow air circulation at the beam's end in an effort to reduce moisture decay. b) counteract wind uplift forces. c) allow the beam to rotate out of the wall if it burns through. d) to ensure that columns will not buckle in the event of a fire. e) to combat the effects of wood shrinkage.

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  1. 21 February, 09:48
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    option C

    Explanation:

    The correct answer is option C

    Fire cut of fireman cut is diagonal cut which is provided at the end of the beam to prevent the fall of masonry wall if a fire breaks out in the building.

    Fire cut allows joist to leave if it fails without affecting the masonry wall standing.

    Without fire cut, the burnt beam will rotate downward affecting the connection of beam and wall and leading to damage it.
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