convert glulam beam to steel beam\H-beam

[svante33]

Hi, I'm planning to take down a load-bearing wall and found a program that calculates glulam beams, which I initially thought to use but it protrudes too much. So I've been searching for hours on how to convert a glulam beam to an H-beam.

https://www.byggbeskrivningar.se/dimensionering/oppning-yttervagg-1-planshus/ (link to the page calculating the dimensioning of a glulam beam)

It is a single-story house
2 columns
Opening width 380cm
Height 240cm
Roof slope 27 degrees
House width 600cm
Snow load 1.5
Clay roof tiles

What corresponds to 140x315 gl30c in HE-B beam?

 

[justusandersson]

HEB 160.

 

[svante33]

hello and thank you for the answer where did you find this information

 

[justusandersson]

It is basic strength of materials. You have to calculate it yourself. You compare the product of the moment of inertia and the modulus of elasticity (usually abbreviated as IxE or IE) for the different materials. If you have calculated the IE for a 140x315 glulam beam, you can divide by the modulus of elasticity for steel. The result will be a corresponding moment of inertia for the steel beam. Then, you just have to look in a steel table and find the HEB profile that at least has this value.

 

[svante33]

Is it not possible to place two smaller glulam beams next to each other, for example, would 2 pieces of 90x270 GL30c correspond to a 140x315 glulam beam?

 

[Violina]

Can't you place two smaller glulam beams next to each other, for example, would 2 pieces of 90x270 GL30c correspond to a 140x315 glulam beam?

Why?

The steel beam is almost free..

 

[justusandersson]

A 90x270 can be replaced by a 165x225. They have the same moment of inertia.

 

[svante33]

Okay, I have checked a bit online and the cheapest I found for HEB 160 6m was 5300 + shipping.

 

[svante33]

or what do you mean by saying that the steel beam is almost free?

 

[Violina]

or how do you mean that the steel beam is almost free?

A piece that small you can probably buy quite cheaply from a company that uses them in their production.

 

[justusandersson]

HEB 160 weighs 42.6 kg/m. Calculating at 25 SEK/kg including VAT, 5300 SEK is a good price.