Dimension HEA

[ParJorgen]

Hello

I have attempted to calculate the deflection on an HEA beam for an extension I am planning to build but am uncertain whether I have done it correctly.
The extension is 1.8 x 3.6 meters and the roof will be supported by a wall on the inside edge and a beam on the outside edge. The beam's span is 3.6 meters and the roof slope is 5 degrees.
I have calculated with a snow load of 1.5 kN/m2 and a load from the roof of 0.5 kN/m2. My idea is an HEA 120 and I thought it might be on the low side. When I calculate, I get a deflection of a little over 2 mm, which feels very small.

Is there someone kind-hearted who can either disprove or confirm?

/Pär

 

[justusandersson]

With the same data you used, I calculate the deflection to be 3 mm. The roof beams are only 1.8 meters long, so the distributed load is not particularly high.

 

[ParJorgen]

With the same data you've used, I calculate the deflection to be 3 mm. The rafters are only 1.8 meters long so the distributed load isn't particularly high.

Thanks, that makes me feel safe!