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Hi all,
I'm currently putting together a SIP panel room and due to an error on my part i've mis-calculated something. To try and keep this simple i've got 2 walls parallel with each other and the INSIDE gap is 3m (so including the 12cm thick wall on each side the total outside to outside is about 3.24m), now i bought 3m long SIP panels to go across the top of the walls (pretty much flat but with a 1:40 rise) but these will now just fall as the gap they needed to "overhang" is the same at 3m so i'm looking to ideally put wooden splines in the 3m rebates of these SIP panels using C24 timber which would be 100mm x 100mm and then be a length of 3.24m (or ideally slightly longer) but given the width of the SIP panels these would be at a spacing of 1.2m apart ? There is nothing to sit (weight-wise) on top of the flat roof but i need to be able to walk on it to fit the rubber roof and any maintenance and snow/rain etc. I've looked at the C24 span tables and there are no entries (obviously) for exactly 100mm x 100mm so how do i work out if the timber is ok to support this ? The nearest size i can see is 72 x 120 which says the span can be 3.2 so i'm thinking not but if this is the case then i need to find another option such as putting a timber "ledge" along each wall and sitting the end of the SIP panels onto them but then they eat into the interior space.....any advice would be great
I've also noticed that C24 span tables do give different variations on the max span so another reason i thought i'd check
Hope this makes sense
I'm currently putting together a SIP panel room and due to an error on my part i've mis-calculated something. To try and keep this simple i've got 2 walls parallel with each other and the INSIDE gap is 3m (so including the 12cm thick wall on each side the total outside to outside is about 3.24m), now i bought 3m long SIP panels to go across the top of the walls (pretty much flat but with a 1:40 rise) but these will now just fall as the gap they needed to "overhang" is the same at 3m so i'm looking to ideally put wooden splines in the 3m rebates of these SIP panels using C24 timber which would be 100mm x 100mm and then be a length of 3.24m (or ideally slightly longer) but given the width of the SIP panels these would be at a spacing of 1.2m apart ? There is nothing to sit (weight-wise) on top of the flat roof but i need to be able to walk on it to fit the rubber roof and any maintenance and snow/rain etc. I've looked at the C24 span tables and there are no entries (obviously) for exactly 100mm x 100mm so how do i work out if the timber is ok to support this ? The nearest size i can see is 72 x 120 which says the span can be 3.2 so i'm thinking not but if this is the case then i need to find another option such as putting a timber "ledge" along each wall and sitting the end of the SIP panels onto them but then they eat into the interior space.....any advice would be great
I've also noticed that C24 span tables do give different variations on the max span so another reason i thought i'd check
Hope this makes sense