old shed roof repair

cute geoge

Old hay shed here just after been taken down ,tinking of replacing with a leanto
It is 19' wide would it good enough to use 9'' x3'' timber as trusses .
I have seen plenty of older leanto's done this way ,it is in an exposed site , so what way would i need to brace it

dzer2

Make steel ones not a hard job

9935452

cute geoge wrote: »

Old hay shed here just after been taken down ,tinking of replacing with a leanto
It is 19' wide would it good enough to use 9'' x3'' timber as trusses .
I have seen plenty of older leanto's done this way ,it is in an exposed site , so what way would i need to brace it

I assume the uprights are still in place and are rsj .
Its gonna be easier and safer to use steel, but if you were adamant on using 9x3 timbers they would work but personally id put in 3 inch angle iron stays on each end of the timber . angle iron 4.5 ft long , hole on each end, put at 45 degrees one side bolted to timber and other to upright.
It will give an aweful support to the timber truss as in theory the timber will only support 14/15 foot and it helps the shed from swaying.
Be wary of the direction you put up the lean to especially if its an exposed site with loads of wind, it could become a kite

Reggie.

9935452 wrote: »

I assume the uprights are still in place and are rsj .
Its gonna be easier and safer to use steel, but if you were adamant on using 9x3 timbers they would work but personally id put in 3 inch angle iron stays on each end of the timber . angle iron 4.5 ft long , hole on each end, put at 45 degrees one side bolted to timber and other to upright.
It will give an aweful support to the timber truss as in theory the timber will only support 14/15 foot and it helps the shed from swaying.
Be wary of the direction you put up the lean to especially if its an exposed site with loads of wind, it could become a kite

You could leave an opening of around 1ft open at the back to allow the wind to pass through.

zetecescort

9x3 spanning 21ft no problem here, up over 30 years. NOT an exposed site though

9935452

Reggie. wrote: »

You could leave an opening of around 1ft open at the back to allow the wind to pass through.

yeah, something like that would definitely be needed, especially if it was on a windy site

Username John

9935452 wrote: »

yeah, something like that would definitely be needed, especially if it was on a windy site

This is a bit off topic...

I have a shed here, opening at side and front.
In a bad gale from the north-east, the roof would lift up a few inches. Hard to know how many, prob not as many as you'd think when you'd be looking up thinking "oh fcuk"

The shed is small-ish, 45ft x 30ft. Not sure what the timbers are - at a guess four 12x5 maybe between the standing rails, with 6x3 on top of these...

Is it ok for the roof to lift up and down like this? Or have I just been lucky so far?

Reggie.

Username John wrote: »

This is a bit off topic...

I have a shed here, opening at side and front.
In a bad gale from the north-east, the roof would lift up a few inches. Hard to know how many, prob not as many as you'd think when you'd be looking up thinking "oh fcuk"

The shed is small-ish, 45ft x 30ft. Not sure what the timbers are - at a guess four 12x5 maybe between the standing rails, with 6x3 on top of these...

Is it ok for the roof to lift up and down like this? Or have I just been lucky so far?

You are lucky so far. You need to anchor it down

Username John

Reggie. wrote: »

You are lucky so far. You need to anchor it down

No real way of anchoring - don't want to put in rails in the middle of the shed, as tisnt that big like...

Just close up the side I guess... Would need to close up both tho wouldn't i - as with two at least the wind has a chance to escape. If I only closed one, could be even dodgier...

Hmmm.....

Reggie.

Username John wrote: »

No real way of anchoring - don't want to put in rails in the middle of the shed, as tisnt that big like...

Just close up the side I guess... Would need to close up both tho wouldn't i - as with two at least the wind has a chance to escape. If I only closed one, could be even dodgier...

Hmmm.....

Close the side facing the wind

Username John

Reggie. wrote: »

Close the side facing the wind

The wind would kinda hit it diagonally so to speak Reg, it would hit one side more, so closing that would do the job.
But I'd be afraid with only the front open, if the wind got in, it would have no way out...

Reggie.

Username John wrote: »

The wind would kinda hit it diagonally so to speak Reg, it would hit one side more, so closing that would do the job.
But I'd be afraid with only the front open, if the wind got in, it would have no way out...

Close the side next the wind and open the opposite side