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Farm Building and Infrastructure
Buildings & Infrastructure
Replacing wood trusses
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<blockquote data-quote="Pan mixer" data-source="post: 6304650" data-attributes="member: 5334"><p>[ATTACH=full]802972[/ATTACH]</p><p></p><p>The ones above were put up in 1950 or so and are 15 feet apart and 30 feet span, I vaguely copied these.</p><p></p><p>[ATTACH=full]802974[/ATTACH]</p><p></p><p>The ones above I made, they are 38 feet wide and the bays are almost 20 feet.</p><p></p><p>I made them in the workshop by making one triangle with the bit carrying the purlin cleats as a base, before I welded on the cleats I made the opposite triangle on top of it so that they were the same. Repeated that twice (there are only 3 trusses in this shed) and then turned the final bit over and welded up 2 more like the first I made.</p><p></p><p>Then I welded two triangles together, used that as a template for the other two trusses and finally welded on the cleats when I had made all 3 full trusses welding the wall plate (or post top plate) on last of all - actually in this shed due to the buildings not being square with each other - I welded on the plate on the left hand side after I had got the truss on top of the posts.</p><p></p><p>I hope that makes sense. Not much snow load down here.</p><p></p><p>[ATTACH=full]802978[/ATTACH]</p><p></p><p>One of the other ones I built - there were 8 trusses in this run, the middle wall is being held up by the truss - not the other way round, I spaced the cleats here so that full sheets of ply could be used as insulation under the tin - the other sheds were fibre cement of course.</p><p></p><p>Hope that this helps.</p></blockquote><p></p>
[QUOTE="Pan mixer, post: 6304650, member: 5334"] [ATTACH=full]802972[/ATTACH] The ones above were put up in 1950 or so and are 15 feet apart and 30 feet span, I vaguely copied these. [ATTACH=full]802974[/ATTACH] The ones above I made, they are 38 feet wide and the bays are almost 20 feet. I made them in the workshop by making one triangle with the bit carrying the purlin cleats as a base, before I welded on the cleats I made the opposite triangle on top of it so that they were the same. Repeated that twice (there are only 3 trusses in this shed) and then turned the final bit over and welded up 2 more like the first I made. Then I welded two triangles together, used that as a template for the other two trusses and finally welded on the cleats when I had made all 3 full trusses welding the wall plate (or post top plate) on last of all - actually in this shed due to the buildings not being square with each other - I welded on the plate on the left hand side after I had got the truss on top of the posts. I hope that makes sense. Not much snow load down here. [ATTACH=full]802978[/ATTACH] One of the other ones I built - there were 8 trusses in this run, the middle wall is being held up by the truss - not the other way round, I spaced the cleats here so that full sheets of ply could be used as insulation under the tin - the other sheds were fibre cement of course. Hope that this helps. [/QUOTE]
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Replacing wood trusses
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