shed floor weight bearing levels?

depending on the size of the floor, about 300 lbs, and last about 6 months and that being generous. better to use pressure treated plywood.

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you got the plywood wrong as well ...no such thing as pressure treated plywood ...what you have got is stirling board ...it wont take much weight unless you put the bearers at 400mm(16") centres ...and the floor should be 18mm not 10 mm ...10 is not suitable for any floor .....if you are going to use the 10mm as a floor then it needs supporting every 300mm max

If you want to start a woodworking project, you need all the necessary information, including schematics, blueprints, materials lists, dimensions etc. That is where Teds Woodworking comes in. The plans are clearly drawn and there're step-by-step explainations of how the plan should be done and put together. Go here https://tr.im/GCaXc

There are several other sites whose collection of plans have the dimensions totally wrong without any indication of parts lists, material lists or the tools needed. If you're one of those people who have bought plans like this in the past, Teds Woodworking will change your perception.

We, in the US call it OSB - Oriented Strand Board. It's not so much as the OSB itself, but what you use as structural support underneath and the spacing. 3.7cm x 10cm won't support as much weight as a 3.7cm x 20cm floor joist. If you have it on 40.5cm spacing, you'll have better support than on 61 cm spacing. If you paint it, it will seal against moisture and last longer than bare wood. A lot of variables go into estimating the longevity of any wood. But even with 3.7cm x 10cm, you can support about 100kg/sq meter.

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