Storage shed

[MG David]

My garage's role as a workshop is increasingly compromised by the other clutter that is in there such a lawn mowers, bbq, bicycles etc. So I am building a lean to shed against one end of the house.

At the house end the floor joists will sit on a length of angle iron fixed to the house. At their other ends they will sit on a concreate/brick foundation sticking proud of the ground. The joists will be 1.7m (67") long.

I was thinking of using 50mm x 100mm (2"x4") joists but would 50 x 75 (2x3) be good enough?
What spacing should I go for? I had 400mm (16") in mind.

The floor will be either t&g, 13mm ply or OSB. Any comments on these and how they effect the joist choice would be welcome.

The shed walls will be either shiplap or feather edge. Any ideas on the size of timber and spacing for framing the walls? I had wondered about 50 x 75 (2x3) but would 50x50 (2x2) do? The roof will either be 13mm OSB with felt on it or twinwall polycarbonate, so not very heavy.

 

[jeffharbert]

At that length 2x4 joists should pose no problem. I'd go with T&G flooring secured with screws to help spread out the load on the floor without the risk of nails pulling out.

For an OSB/felt roof, use the 2x3s. For the polycarbonate roof, the 2x2s should be fine.

Be sure to use pressure treated wood wherever water might come into contact with it. Don't forget the possibility of rain splashing up from the ground.