Removing internal walls - steel advice

[Anthony Ryan]

Hey,

We are investigating the possibility of removing 3 internal walls (sections of walls) to make 3 small rooms into one large room.

One 6.5 meters, Holding up floor joists and stud walls
One 3.5 meters, No joists but a “vertical beam” that is under a roof purlin
One 1.5 meters, Holding up a couple of floor joists

The 2 smaller guys will be bolted into the bigger. 4 No 20mmdia BB with 10mm plate

I've had an SE have a look. He has recommended 254*146*31 UB for the 6.5 M and
203x102x23.1 for the 2 smaller guys.

The 6.5 M guy will not have any upright apart from at one end by internal wall (100 * 100 * 5 SHS - see diagram)

The steel will be going in flush to the cavity walls but sitting on padstone or lintels

See attached diagram for some more detail.

This might be a bit light on detail but thats basically my current knowledge.

What I want advice on is:
1. Are there any major stand out concerns with this?
2. What further questions should I be asking to the SE and builder?

Thanks!

 

[Leofric]

You could ask the builder what further information they require from the structural engineer in order to carry out the work.

 

[Anthony Ryan]

Thanks Leofric. Yes, I'll do that.

My concern is around the complexity, i.e. removing 3 sections of wall and the 6.5 M span. Would be interested in some independent
opinions. Builder and SE admit it is slightly complex but have no major concerns i.e "all doable".

 

[^woody^]

Under CDM (Construction Design and Management Regulations) the engineer and the builder have a duty to produce method statements and risk assessments to dictate how the work is to be done and done safely. And you as the client have a duty to see that they do.

 

[Anthony Ryan]

Thanks Woody, any initial thoughts or comments on the particulars of the job. The complexity etc?
I found it hard to find a comparable job online. Most seem to be extension knock throughs or single beam replacing an internal wall.

 

[tony1851]

Under CDM (Construction Design and Management Regulations) the engineer and the builder have a duty to produce method statements and risk assessments to dictate how the work is to be done and done safely. And you as the client have a duty to see that they do.

CDM regs? OP is not in the UK.

 

[^woody^]

CDM regs? OP is not in the UK.

Then he should move