week 14. fixing purlins and ceiling battens this week. purlins are nailed to the top chords. ceiling battens to the bottom chords. much easier work with a nailgun. wire dogs are fixed between purlins and roof trusses to prevent wind uplift. metal bracing straps are fixed in diagonally opposed pairs at each corner of the house. then tightened with tensioner blocks. bracing straps as well as wire dogs are also used at the wall plates to hold down the roof against wind uplift. different fixings are used to transmit vertical loads as well resist horizontal forces in the construction of a timber frame house.
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| fixing diagonally opposed metal bracing straps to underside of purlins across top chords of roof trusses |
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| fixing purlins to top chords of roof trusses with wire dogs to prevent wind uplift |
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cantilevered outriggers forming verge; note space brace at gable end and continuous ceiling runner fixed to king posts of roof trusses, space brace also fixed at other gable end and in the middle of the house
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That’s a solid fact! Positioning those metal bracing straps that way will definitely make a firm hold. By the way, have you also installed metal straps between the roof joists and wall? Make sure you do, for it to have a more solid form.
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