Structural timber types

[Benway]

Is there a difference in the strengths of structural timber types of the same size?

If a structural engineer specified a 63x200 C24 timber section I could use either a C24 timber, a wooden I-Joists or a metal web open joists of that size or greater?

I would ask my SE but we're currently not on speaking terms! But that's another story.....

Thanks.

 

[tomfe]

If they are designed to be yes.

 

[tony1851]

we're currently not on speaking terms! But that's another story.....

Thanks.

So you've not paid his bill?

 

[Benway]

Oh I've paid unfortunately. See https://www.diynot.com/diy/threads/steel-bean-cavity-wall-sizes.478881/

We have a difference of opinion about if the beam is fit for purpose, ie fits the existing wall/house and he wont recalculate. At first he wouldn't recalculate with me paying more, now he won't recalculate at all.....

 

[tony1851]

Is it that large steel beam that you're concerned about, or timber floor beams?

 

[Benway]

The timber roof beams. The question was really if a C24 63mm x 200mm timber is specified, can I use a that size but with a wooden I-Beam or a metal web open joist? Do the engineered options have the same loading characteristics as the solid piece of timber.

Cheers.

 

[tony1851]

No, they have completely different structural properties.

 

[^woody^]

I would ask my SE but we're currently not on speaking terms!

Then he's not your SE. Get one who is not a baby.

 

[Benway]

Thanks Tony. I called him something other than a "baby" Woody which is why I think we're not currently talking.