Timber size
- Thread starter grass man
- Start date
Trouble is the heavier section you go to overcome sagging, the wet timber and the extra weight defeat you. 6m is too wide for today's timber.
Crap timber is the problem, and I dont know where to buy good. Only answer is to have a good relationship with local sawmill that will allow you to pick them out.
Crap timber is the problem, and I dont know where to buy good. Only answer is to have a good relationship with local sawmill that will allow you to pick them out.
Better to go with 15' bays
chap I get my seds fromsays it as cheap now to use steel , and they come ready drilled and are straight
I don't like steel for a livestock building
we have one thats forty years old with steel thats ok so far and the new ones are better, but I get your point
I don't want to admit it, but I've done a couple of cattle buildings in 10' bays.
Total volume of timber was the same, but we cut all the (4x2) purlins from the co-product when cutting posts and rafters, so used less logs and had less waste.
Hardly dedicated a log to purlins.
To avoid using too many posts (construction was raised feed passage through middle) we sat rafters on gurt 20' beams running lengthways.
I have a shed ordered with 20 ft bays, 9×3 timbers and box profile anti condensation non drip cladding. It's a general purpose machinery shed / workshop. My shed erector now suggested that the last few sheds he put up with that cladding do not please him. He says where the sheets overlap there is a raised lip because the fleece pushes it up and also the fleece runs right to the end of the sheet and over the spouting and he thinks that if it splashes up from the spouting that it may get absorbed back up the underside of the cladding a little. This is the reason for the original question. Any advice or opinions?
designanddetail
Member
Tell your shed builder that he needs to scorch the end 3 inches of the top sheet at the lap and at the eaves to stop this happening.
designanddetail
Member
On site before erection, basically burn the fleece off with a blow torch or similar. Simple and very common technique.
- Location
- Aberdeenshire
9x3 on the shed I put up last year and no sagging yet I guess it depends on the quailty of the timber too