We are building a veranda across the back of the new extension, and a car
port up the side of the house to link with the veranda and provide a covered
walkway from the front to the back of the house.

The main veranda and car port are pretty straightforward but the corner
where the two meet requires a bit more thought.

The solution appears to be a hip, joining the two roofs sloping in different
directions.

The triangle calculator suggests the hip will be 5.3m long.

Working from
http://www.bsw.co.uk/uploads/files/b..._4pp240810.pdf
seems to suggest that 72*220 (3*9) C16 might do the job.
However this is for floor joist sizes on a ground floor.

I am having more difficulty finding tables for rafters - they don't seem to
go much beyond 3m in length.

So the hip is approximately 5.3m long, with two roof slopes. One slope is
approximately 8 degrees, the other about 12 degrees.
Both are shallower than the usual 15 degrees but the roofing materials are
specified to work down to 5 degrees so hopefully all will be well.

Any links to tables or other useful suggestions most welcome.

Cheers

Dave R

--
No plan survives contact with the enemy.
[Not even bunny]

Helmuth von Moltke the Elder

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