External Wall Timber Clad loading

[DaveHolder]

Hi,

I have external wall timber clad consists of 50mm cladding, 100 mm insulation, 10mm chipboard and 12.5mm plasterboard,140mm stud wall.

I manged to work out the loads as follow:

1- insulation load 0.1m x 0.5 density = 0.05 kN/m2
2- chipboard 0.01m x 7 density =0.07 kN/m2
3-Plasterboard 0.125m x 9 density = 0.1125 kN/m2
4- Timber wall Studs 0.5 KN/m2

However, I am not sure exactly how to work out the dead load of the 50mm cladding.

Normally, we take the total timber cladding wall as 1.35kN/m2. How can I justify this figure as the total load without 50mm cladding is 0.74, so is it correct to assume the 50mm cladding is 0.62 kN/m2.

Thanks

 

[jayrod12]

So you're talking solid 50mm thick wood cladding essentially? Even though it depends on the type of wood, I'd use a value equal to 50mm thick plywood, so around 0.3, 0.35 kN/m²

 

[DaveHolder]

Thank you mate

0.35kN/m2 without battens. I normally use around 0.05 kN/m2 battens so I would go for 0.4 KN/m2.

What do you think?

 

[jayrod12]

I don't see an issue with that, I find it highly doubtful that it weighs more than 10 PSF (0.5 kN/m²). So if you have 0.62 available then you're well within that.

For what it's worth, I feel your wall studs load is borderline extreme. for 38x89 studs @ 400 it should be around 0.05.

 

[DaveHolder]

Thank you buddy!