calculations

Evening all, I am new to DIYnot but have had a read of some of the informative posts on the forums. I hope I can get some useful advice to help me navigate my current position in the best possible way. From the very start of our discussions with the architect and then subsequently the engineer...

Hi, I'm currently mid-build on a 1.6m deep x 2.8m wide porch. I've been told by the builders that I can't put the door where I want to (very close to one edge) because building regs require a >600mm return. Something to do with making sure the wall doesn't get blown over. We live near London so...

Hi, I'm looking at some calculations for a beam. Is it correct that celotex is listed as 0.25kn/m2 ? Only unsure as it is listing plasterboard and skim at only 0.12kn/m2 and 25mm flooring at 0.13kn/m2 Surely it's not heavier than these two things? Thanks

Hi all, I have been going round in circles when trying to calculate the materials needed to complete my shed bases. They both have around 3 to 4 inches of type 1 mot base. I am wanting to use: all in one ballast and cement at 4-1 ratio. Any help will be greatly appreciated. Shed 1...

Hi guys I'm in need of some advice please, I'm trying to do some calcs for a loft what I need to know is how to work out the self weight of purlins and individual joists, (looked every where) I would also like to know when adding a point load from a trimmer carrying the floor do I have to also...

Hi all, we are in the process of getting a structural engineer to do some calculations for steel supports as we are going to be knocking out supporting walls (hopefully) Any advice on what we should be asking the structural engineer? Qualifications, insurance etc? We know what walls we would...

Hi, I am converting the area above my garage to habitual space by changing the roof. I made a mistake in ordering the roof trusses they are too small - since its my mistake I don't want to pay for a second set. I've seen you can add 'scabs' to lengthen them. is it Ok just to nail or coach...