dimensioning of HEA beam

[Alan]

I am going to size up an HEA beam that I plan to use for building a second floor in a restaurant. However, I am a bit unsure if I am calculating correctly. Which software should one use? Where can I easily get this software?

The problem is that I have a span of 5.5m and need to anchor myself in an existing HEA 400. My two beams should be placed between two HEA 400 beams. This must support a weight of 5 tons. I did some calculations and came to the conclusion that an HEA 200 would suffice. Can I rely on my calculations?

// Alan

 

[MathiasS]

It seems like you're talking about a public building - I would never rely on my own calculations or assumptions in this case. The cost of getting help from a structural engineer must be modest compared to the total cost of the extension/renovation.

 

[isolde]

Which program do you use?

For example, a program called SB-balk. However, I suspect it won't be very useful to you, because you need to have a good understanding of statics/mechanics. Much like today's high school students with advanced calculators, who still don't understand what they're inputting.

Can I rely on my calculations?

Unless you are a skilled engineer/designer, the answer is no. Add to that the fact that it's a matter of a restaurant where the public will be present. You will ultimately be responsible if a collapse occurs.

 

[Alan]

I have a small construction company in Spain and a civil engineering degree from Sweden. The thing is that it was like three years ago that I completed my education and haven't calculated such cases since then.

 

[bruschen]

In that case, you know about BSK available for free on Boverket's website. Tibnor has steel tables. The formula ql2/8 or alternatively Pl/4 should also ring a bell in your head. If not, you should pass this on. This is not toys you're dealing with...

 

[BAS]

In addition to the advice you've received so far, I can add that Excel is excellent for these calculations. I have used Excel for significantly more complicated hållf. calculations than a lying HE-beam.
You probably have a formula collection at home, if not, they are in Tefyma or similar formula collections.