DIYbanter - View Single Post - Disaster waiting to happen? Using PVC for deck supports???

Matt Whiting

wrote:
On Sat, 24 May 2008 07:57:32 -0400, Matt Whiting wrote:

wrote:
On Fri, 23 May 2008 20:26:04 -0400, PeterD wrote:

On Fri, 23 May 2008 07:56:33 -0700 (PDT), RicodJour
wrote:

We are discussing steel columns and
house fires. For all intents and purposes there is no burning of a
steel column. But feel free to continue the debate - let me know when
you feel you're winning.

R
I always win, or so my wife tells me. For some reason I have to
believe her--I think it is because she told me so.

That said...

Steel columns in a house fire are not an issue. The house will be long
gone before they fail.

What we *were* discussing was whether cement in a column (of any
composition) adds strength, and if so, how much, and as well why add
cement.

Cement is added to a Lally column to prevent collapse or pinching
failures. Who cares what happens when the steel softens to the point
of failure? The game's over at that point regardless, the house will
be long gone, and the failure of other members of the structure will
make any column's ability to withstand fire a non-issue.

But, what the heck, let's argue onwards.
The firemen trying to save people in the house may care a lot about that
concrete in those columns. That's why the building fire safety codes insist on
them being there.
I've seen two claims of fire codes requiring concrete fill, yet I've
seen no reference posted to a fire code that does require that in
residential construction. Reference??

Check with your local building department.

As I suspected ... you are just making up stuff.