ᐅ Zapf prefabricated garage is being widened

Hello everyone,
We are planning to widen our prefabricated concrete garage to create a large garage space.
Since demolishing and rebuilding from scratch would be much more expensive, we want to attempt the renovation this spring.
A master mason drew up the sketch for us. The main work involves supporting the precast concrete ceiling.

The mason has 15 years of professional experience and said the renovation can be carried out this way.
Due to the garage height, the concrete ceiling is supported by an HEM 140 beam.

At the end, a ring beam and a 30° pitched roof will be added. The eaves side faces the garage door. Snow load zone 1.
For weight reasons, the gable ends will be constructed as a timber beam structure, clad with boards.
Maybe someone with experience could take a look and provide comments.
Of course, I am available for any questions.

Just sell the Zapf garage as it is. It was probably delivered by crane and low-loader. That way it can be removed the same way. Maybe someone nearby needs a garage like this and will pay a good price. Then build a new one.

Anything else is just patchwork.

Bausparfuchs schrieb:

Just sell the Zapf garage as it is. It was probably delivered by crane and low-loader anyway.
So it can be moved again the same way. Maybe someone nearby needs such a garage and will pay a good price. Then you can build new.

Everything else is just patchwork.

The garage has been offered for free online for 9 months.
No one wants it.
The problem is that the garage is 3.6m (11.8 feet) wide, and not every shipping company can transport something that wide. On top of that, a 200-ton crane is needed.

I wouldn’t call it patchwork. You don’t tear down the whole house just because you want to add a floor. And if the structural engineering is okay, why not?

I understand that transportation will be expensive.

However, I wouldn’t do it the way you’re planning. You basically want to remove a side wall. That would compromise the entire structural stability of the garage because it’s not a masonry wall. These are reinforced steel and precast concrete elements. The reinforcement runs around the corners and so on.
You probably don’t have a proper foundation underneath either. The load on the garage frame would be completely different, especially since the composite structure is missing.

Still, it might be worth trying somehow.

What would be a deal breaker for me, though, is the height. If you want to install a small lift, even just a low-rise lift, you won’t have enough clearance. Or if you buy a cargo van or something similar. So if you do it, do it right.
The garage is the most important part of a house for a real man. And it can never be big enough.

Bausparfuchs schrieb:

can never be big enough.

Real men don’t need to compensate with oversized garages, cars, watches, or the like.

Renovators like you, of course, sit every evening in a turtleneck and slippers right on time at 8 in front of the TV so as not to miss the evening news. In that case, a precisely fitting prefabricated garage is certainly sufficient.

For many, however, it is their second, if not their main, living room. And you want to make it comfortable there as well.