wozza Posted October 26, 2019 Share Posted October 26, 2019 Hi All, Couple of questions about Joist hangers, (joists butted up to steel beam with timber infill) 1. Joist hangers, nailed or screwed (or both) - I have got twisted nails at the ready but I have always favoured screws over nails. 2. I have been advised to fit noggins between the joists to stop twist - how close to the hangers should they be and should they be the same depth as the joists and can I stagger them so they are easy to fix. Thank Wozza. Link to comment Share on other sites More sharing options...
ProDave Posted October 26, 2019 Share Posted October 26, 2019 Twisted nails, it's what they are designed for. 1 Link to comment Share on other sites More sharing options...
Oz07 Posted October 26, 2019 Share Posted October 26, 2019 At least 50mm away to allow for the metal work and potentially any services 1 Link to comment Share on other sites More sharing options...
ToughButterCup Posted October 26, 2019 Share Posted October 26, 2019 29 minutes ago, wozza said: [...] Joist hangers, nailed or screwed (or both) [...] Nailed. And, to lighten your evening, have a laugh at my ineptitude while doing the same job ..... ?. 1 Link to comment Share on other sites More sharing options...
Russell griffiths Posted October 26, 2019 Share Posted October 26, 2019 You can screw them but MUST use the screws supplied by the joist hanger manufacturer, you cannot use your normal wood screw. 1 Link to comment Share on other sites More sharing options...
PeterW Posted October 26, 2019 Share Posted October 26, 2019 Guide from Simpson here - it’s the US one but the screw sizes and fixtures are the same https://www.strongtie.com/products/connectors/wood-construction-connectors/technical-notes/fastener-types-and-sizes 1 Link to comment Share on other sites More sharing options...
ProDave Posted October 26, 2019 Share Posted October 26, 2019 18 minutes ago, AnonymousBosch said: Nailed. And, to lighten your evening, have a laugh at my ineptitude while doing the same job ..... ?. That's just as funny reading it a second time nearly a year later. Especially as I have now seen "the gap" 1 Link to comment Share on other sites More sharing options...
Crofter Posted October 26, 2019 Share Posted October 26, 2019 Nail them. Nails for shear loads, screws for tensile. And dwangs/noggins should either be full depth or criss-crossed. But if you are gluing and screwing the flooring down, that will stiffen everything up a lot too. Link to comment Share on other sites More sharing options...
ToughButterCup Posted October 27, 2019 Share Posted October 27, 2019 12 hours ago, ProDave said: That's just as funny reading it a second time nearly a year later. Especially as I have now seen "the gap" You've also seen the trousers Dave. ? Link to comment Share on other sites More sharing options...
Construction Channel Posted October 27, 2019 Share Posted October 27, 2019 2 hours ago, AnonymousBosch said: You've also seen the trousers Dave. ? I take it Debbie was at home at the time then Link to comment Share on other sites More sharing options...
Adrian Walker Posted October 27, 2019 Share Posted October 27, 2019 I'm working on a new build and the Building Inspected told me to nail every hole on the hanger that I still have access to. Crazy Link to comment Share on other sites More sharing options...
Russell griffiths Posted October 27, 2019 Share Posted October 27, 2019 2 hours ago, Adrian Walker said: I'm working on a new build and the Building Inspected told me to nail every hole on the hanger that I still have access to. Crazy No, why? thats what there designed for. Link to comment Share on other sites More sharing options...
Adrian Walker Posted October 27, 2019 Share Posted October 27, 2019 17 minutes ago, Russell griffiths said: No, why? thats what there designed for. 50+ nails per end? Link to comment Share on other sites More sharing options...
Russell griffiths Posted October 27, 2019 Share Posted October 27, 2019 (edited) 6 minutes ago, Adrian Walker said: 50+ nails per end? Why don’t you check with manufacturer, that does seem a lot. Every hole, that’s what they designed them for, that’s how they will be load tested. Are you using a jiffy hanger, the bendy ones, if so nail the full height of the joist and bend the top over and chop off with snips. Edited October 27, 2019 by Russell griffiths Link to comment Share on other sites More sharing options...
ProDave Posted October 27, 2019 Share Posted October 27, 2019 5 minutes ago, Adrian Walker said: 50+ nails per end? Never seen that many. Do you have a link to the hangers you are using? Link to comment Share on other sites More sharing options...
Ed Davies Posted October 27, 2019 Share Posted October 27, 2019 https://www.strongtie.co.uk/products/detail/joist-hanger-with-adjustable-height-strap/769 Number of nails needed is quite a lot less than the number of holes. E.g., JHA270/47 has 38 header holes and 6 joist holes but, with sufficient wrap over, needs only 12 header fasteners (8 on the face and 4 on the top) and 4 in the joist. Link to comment Share on other sites More sharing options...
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