Timber roof on a RC concrete slab.

[kellez]

Hi,

I am designing a timber roof to be supported by a RC concrete slab. As you can see from the picture the timber frame is simply composed
of inclined beams supported by timber columns that connect to the RC slab.

Now my question is, what is the best way to connect the timber columns to the Rc slab? I am thinking of steel brackets but not really sure.

 

[dik]

Has this thread ever evolved... I'd move the membrane between layers 2 and 3. I'd also avoid contact between concrete and lumber/timber and use PWF material to minimise the chances for dry-rot.

Dik

 

[jayrod12]

For the rafter connection, I'm partial to option 5 to be honest. And please review your birdsmouth cut in your rendering, there doesn't appear to be much meat leftover. Your overhang could cause failure of that narrow section.

 

[dik]

birdmouths are normally restricted to 1/3 the member depth...

 

[kellez]

The birds mouth shown in the picture is excessive, that is not the final design, i am changing that for sure.