"Tim Streater" wrote in message
.. .
In article , John
Rumm wrote:

On 17/11/2014 08:18, ARW wrote:
On Saturday I arrived at work to discover this at the customers house

http://wiki.diyfaq.org.uk/index.php?...:Avaulted1.jpg

Yep he has removed the ceiling joists and the back wall.

'kinell, lucky the whole lot did not just splay out at the top and dump
the whole roof into the room under it!

Use the acro in reverse - just needs a couple of volunters to hold it
iin place until it bites

Nice recovery...

http://wiki.diyfaq.org.uk/index.php?...:Avaulted7.jpg

Screw in a few timbers to hold it in place - including a ceiling joist
and it looks OK.

http://wiki.diyfaq.org.uk/index.php?...:Avaulted8.jpg

Dunno what their final solution will be.

Would be worth sticking that quick overview into the wiki to go with the
photos. Nicely illustrates what the "floor/ceiling" joists do in
traditional roof framing.

And, for constructional know-nothings like me, it would be useful to
have a brief overview of how things would be done differently, if
there'd been no extension there and one wanted to build what the DIYer
had been trying to convert it to, i.e., an extension with a vaulted
ceiling.

I'm curious since the house I owned in California had a vaulted ceiling
main living-room.

The traditional alternative is purlins supporting the rafters.
There may need to be an intermediate truss/other support.