ᐅ Building Your Own Garage – Calculating Structural Load?

Created on: 17 Sep 2019 07:33
Q
querys_
Hello everyone,

Originally, I planned to have a metal garage, but my wife didn’t like that idea. Therefore, the garage will be built from sand-lime bricks, as it is difficult to find something in the desired size.

The garage will be built directly on the property line and is planned to be 10 meters (33 feet) wide, 9 meters (30 feet) long, and 3 meters (10 feet) high.

I want to have the foundation slab constructed together with the house, but we will handle the "building" ourselves.

Two things are still unclear to me:
How should I build the flat roof (concrete slabs, wood, metal) given the large spans?
How do I construct the lintel for the garage door? The front should have as much opening space as possible so that it’s possible to drive in the middle when working on the car.

I assume that a structural engineer will need to calculate the static loads?

By the way, the construction site is in NRW.

Thank you very much for any advice.
M
Milo3
17 Sep 2019 20:00
Joedreck schrieb:

So, 2DF sand-lime bricks will cost around €2500. The gate €2500. You can cast the ring beam yourself. One day, 5 helpers, and it’s done. Concrete is cheap, the pump is expensive. Plus mortar.
Including structural engineering, a skilled mason, building permit / planning permission, and a lot of manual labor, I come to a MINIMUM of €15,000. More likely €20,000.
That would still be an exceptionally good price for these dimensions.

€100 per cubic meter (about $110 per cubic yard) isn’t exactly cheap. Compared to that, the bricks are inexpensive.
J
Joedreck
18 Sep 2019 09:27
Well, how much does he need for the ring beam? 3 cubic meters? That’s about 300€.

You might be right in relative terms. But absolutely speaking, no. For a 100 m² (1,076 sq ft) garage (if everything goes well), the cost comes to 20k. That’s basically nothing.
M
Milo3
18 Sep 2019 09:30
Joedreck schrieb:

Well, how much does he need for the ring beam? 3 cubic meters? That’s already $300.
In proportion, you might be right. But in absolute terms, no. For a 100 m² (1,076 ft²) garage (if everything goes as planned), the costs come to around $20,000. That’s basically nothing.

Don’t forget:
Minimum quantity surcharge, reducing the pump, etc...
The pump is needed longer than the included 15 minutes.
The pump needs to be cleaned.
In the end, you’re looking at $800–$1,000.
I am currently building my house myself.
J
Joedreck
18 Sep 2019 10:00
I already mentioned without a pump. We also made the ring beam for my mate using self-mixed concrete. It was a tough day, but with motivated people, the structural engineer(!), and the master mason, it was no problem.

Mixing concrete and pouring it in is something anyone can do. You don’t need a pump for that.
R
readytorumble
18 Sep 2019 10:55
Among other tasks, we mixed and poured the concrete for the house and garage ring beam ourselves. I remember it well because it was a lot of fun.