October 18, 20188 yr I've done my best not to bother you all with this question, but..... I'm not far off fitting my wall plate - and thus my joists for the little (steeply sloping) flat roof. Joists and wall plate on site, just waiting for the concrete to dry a bit. And of course, its DIY The nice folks from Cheshire Roof Trusses sent me the necessary ironmongery. Here it is. This sooooo embarrassing ......... Which way up do I use the Simpson Strong Tie? ? Should the stamped ridge face outwards (away from the wall plate towards the joist) like this? A simpler way of asking the question might be either : What does the top chord of the joist sit on: the square tabs or the rounded ones? Or conversely, do the rounded tabs sit on the top of the wall plate or the square tabs? I think I know how to use the corner plates. It's hard work this DIY lark........
October 18, 20188 yr I have never seen these before so googled https://www.strongtie.co.uk/products/detail/slotted-z-clip/79 They are for noggins. I was expecting truss clips. Ask the designer if you need anything else (holding down straps etc).
October 18, 20188 yr I agree with Mr Punter, these are for noggins and to use them for I-beam joists would be a bad idea. The square tabs go under the flange of the I-beam but I-beams aren't designed to take much force as point loads on the flange, particularly not pulling them away from the web. I've got a lot of I-beams in my house but the only ones supported anything like this will be the trimmers for the windows for which the SE specified Simpson Strong-Tie ITB hangers. Edited October 18, 20188 yr by Ed Davies
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