Help VKR - Beam!

[Bollet]

Hello!

Need quick help regarding VKR beam, dimension.

The length is 2 meters.

I need to support 3 floor joists and on top I will have a toilet.

The floor of the toilet weighs about 800 Kg, plus walls and fixtures.

Floor area Approx: 6 sqm.

What more information is needed to help me with this?

Ask and I will answer quickly.

Thank you very much.

 

[Gabbe1]

I don't really understand the load case.
The beam is supposed to be 2m long, will it have support at each end then?
Is the beam going to support 3 floor joists that are evenly distributed over the beam's 2m?
Are there any requirements for the maximum height, width, or weight of the beam?

The easiest is if you can make a sketch of the construction and show how you plan to have the beam.

 

[Bollet]

Hope it came with

 

[Bollet]

There we go...

I want the beam to be as low as possible because I have low ceiling height in the basement.

Are any additional details needed?

Thank you in advance.

 

[Bollet]

Previously, there has not been any support at all under these 3 floor beams.

 

[hokanp]

How much deflection can you accept? A VKR 100*50*6.3 has approximately 0.7mm deflection with a distributed load of 10000N = 1000kg. A VKR 80*40*5mm has approximately 1.6 mm.

 

[Bollet]

Yes, how do you know that?
I am going to have 3 cm concrete + reinforcement mesh + underfloor heating pipes + tiles on top.
I want it to work

 

[Gabbe1]

Since you have leveling compound and reinforcement mesh, you will distribute the load quite adequately.
A beam that deflects down 1mm under a distributed load of 1 ton will provide a significantly reinforcing effect on the floor structure.

 

[hokanp]

It is difficult to make this type of calculation as it is uncertain how it will look in reality. But at least count on a VKR 100*50*6.3. If you want greater safety, you should choose a larger beam, e.g., a 120 or a 140, but let the material thickness be at least 6.3 mm. I have assumed that you have 100 mm on each side where the beam rests on a support. So, the beam is a total of 2200 mm with 2000 free length. You also have to take into account the existing floor joists that also bear some load. Calculated on a VKR 120*60*6.3 with a deflection of 0.441 mm.

 

[Gabbe1]

Calculated on a VKR 120*60*6.3 with a deflection of 0.441 mm

Or you can choose an HE100A beam which has almost the same performance as the above but is only 96mm high.

 

[hokanp]

Then it is better with a VKR 100*50*6.3 which is easier to incorporate and has a deflection of 0.7 mm but weighs only 27 kg compared to the HEA beam which has a deflection of 0.6 mm but weighs 35 kg.