ᐅ Structural Issues with Wall Construction

Hello,

I have a problem with the structural engineering. We are building a single-family house using calcium silicate bricks. For the upper floor, the structural engineer specified that two walls must be drywall. That is absolutely out of the question for me. My question to you is: Are there any alternatives to drywall? I was thinking maybe about aerated concrete blocks, like Ytong. Does a wall made of aerated concrete blocks weigh more than a drywall partition? Are there any other alternatives to drywall that you could suggest?

Since I have no knowledge of structural engineering, I don’t understand the engineer’s calculations. If necessary, I can upload them here again.

Best regards

Why not use drywall? Because of sound insulation? In that case, Ytong isn’t necessarily the ultimate solution either.

What’s stopping you from asking the structural engineer why it doesn’t work with calcium silicate bricks and what needs to be changed to make it work?

Yes, I will probably have to do that. I just wanted to gather ideas and tips here in advance.

Drywall construction is not the worst option.

In structural engineering, the term "lightweight construction" is often used. This also includes wall types other than drywall. This can often be aerated concrete (Ytong) or low-density sand-lime brick.

However, I would always prefer an insulated drywall partition over 11.5cm (4.5 inches) thick aerated concrete.

Timber framing is also not too heavy.
What requirement conflicts with drywall (plasterboard) construction?