looking for recommendations for someone to draw some fabrication drawings to build a shed 60x60 21ft to eaves, for a straw barn, just a roof on legs basically.
I'd being looking to fabricate myself, Built a few in the past but haven't got drawings for a 60ft spanIf you could be a bit more specific it would be good. If you want a design certificate to go along with shed then you'll need a structural engineer. If you have steel sizes in mind that you want to use and just want it done then you'll need a structural technician who should be able to draw in in software like StruCAD.
The other option is just to approach a shed builder and get them draw it as part of a package unless you are planning on fabricating it yourself.
I could help with some of the above options if it is any interest.
For the wind bracing I set 2 rafters out on the floor ends against a straight edge at 6096 centres and worked them out that way, was the most simply way at the time. I make a jig up that fits the bolt pattern for doing the eaves beam cut in’s but they can be different on each frame.The tricky bit is working out the lengths of the wind bracings etc, also the brackets for the eave beams, last one we cut into the top of the stanchions,
Yes that’s a good idea, I was just wondering if anyone had drawing to save timeFor the wind bracing I set 2 rafters out on the floor ends against a straight edge at 6096 centres and worked them out that way, was the most simply way at the time. I make a jig up that fits the bolt pattern for doing the eaves beam cut in’s but they can be different on each frame.
Have done this with all of our recent buildings. Steel all mitre cut to required angle and made shed to suit stock lengths. Steel work from Arraquip, purlins from Thomas Panels and roof from Briardwoodit would be a massive help if you buy your steel in cut to size and angle this includes all the eaves ties and bracings ect
175/16 will be fine there usually set 10mm proud of rafter so overall height is 185mmTo save starting a new thread I’m doing back of envelope calculations to stick an extra bay on a shed I have, existing is 4.8m bays with 7*3 timber purlins but as the ‘new’ bay will be ooen front to be used as storage 6m bay would be better. Any one know which size Z purlins would be needed? 175mm will match the timber with some clever use of cleat positions but not sure on thickness. 1.6mm sounds a bit lightweigh. Current roof angle is 10 degree and perlins spaced at just under 1200mm for box profile roof.
I wouldn’t be using 175 x 1.6mm over a 6m span on my own shed and don’t think I could get the calcs to work for anybody else. Bearing in mind with adding on one bay the purlins will be single span rather than continuous. For all the few pounds extra a thicker wall would be worth it.175/16 will be fine there usually set 10mm proud of rafter so overall height is 185mm