Oak Beam Loading

[bluebaron]

As a rough guess can anyone point me in the right direction here, i am looking to span about 4m with a 200x100 oak beam. above will be a balcony. (with 6x2 joists softwood 1.2m long at 500 centres).

I can't find a span table for this size beam anywhere. it will have 100mm support either end.

I could also add a 200 x 10 Flitch beam to the back of the oak if required.

Does this sound feasible?

 

[^woody^]

You'll need to pay someone to work this out. You dont really want to be chancing supports and certainly not balcony supports, and definitely not external balcony supports.

 

[trevorbayliss]

I am doing my own extension and it is single storey and flattish roof. So no weight above apart from the roof construction and covering.

I am using oak purlins to take the weight of the roof.

The engineer said i need to use 250 x 150mm purlins up to a maximum of 4.5m span. Even if i go for a 4m span i still have to use the same size. The gap between the purlins is about 1.5m

So i assure you will need the same if not a higher spec because you will be creating a balconey above and so you need to factor in the weight of people / furniture etc.

 

[tony1851]

Domestic situation? That would probably be OK without the steel plate - but depends (among other things) on what weight of balustrade you have.

 

[catlad]

Maybe you could make the balustrade work for you!