ᐅ Garage Slope – Which Design Option?

In this thread, it becomes very clear how "one-sided" opinions are represented. One might think that most garages should be built without any slope "because it’s supposedly unnecessary." However, it really depends heavily on the construction conditions and the surrounding terrain.

Example:
If the floor is relatively "smooth" and "level" (industrial coating, tiles, etc.), the water will indeed follow a slope. It is beneficial if this slope is intentionally directed toward the exit (door, drain) and not toward a wall (for example, due to an unintended slope when applying the floor/coating).

K1300S schrieb:

Why someone would plaster the interior walls of a garage isn’t entirely clear to me. So far, I have never missed this in various garages I’ve seen.

That really depends on the construction specifics, such as the type of masonry. A bare Poroton wall always looks too much like a shell construction and thus "unfinished." Plaster can conceal imperfections in the masonry, create a nicer appearance, make it easier to hang posters, and so on.

Well, a bare sand-lime brick or clay brick wall also looks like a shell construction. So what? I’m not installing my electrical wiring on the surface there either, and my car/bike/motorcycle hasn’t minded so far. 😉 However, I have to admit that it fits the overall picture, especially when I see the proportions of house size to garage size in many building projects here. Enough off-topic ...

K1300S schrieb:

I don't quite understand why the inside walls of a garage are plastered. So far, I have never missed it in various garages.

Ours is plastered inside as well, one wall and the ceiling.
The garage is in the basement but outside the thermal envelope. So it is insulated and then plastered. 😉

K1300S schrieb:

So? I’m not installing my electrical cables surface-mounted there either,

Why not… As mentioned, the garage is part of the house and therefore serves more purposes than just a parking space for the gasoline-powered vehicle.

netuser schrieb:

We are currently torn between going with a concrete slab or paving.
If a slab, there is debate again about whether to build it on strip footings (frost protection) or without.

Any opinions or recommendations? Thanks! 🙂

Dear all,

I’m currently, or rather still, dealing with the question of a concrete slab with or without strip footings.

In the meantime, I relied on several sources saying it should work fine without strip footings.
The ground is almost prepared accordingly, and drainage pipes have already been laid where the footing would normally go.

Now I’m hearing from some people around me that the slab should definitely be placed on footings. hm 🙁

Here are the facts and my understanding so far:

1. Under the garage (4.5 x 7.5 m (15 ft x 25 ft)) there is currently about 40-50 cm (16-20 inches) of crushed rock installed and compacted, which is also considered a capillary break layer.
2. On the left and right sides of the planned garage, there are buildings with corresponding footings (providing frost protection from those sides, I assume).

3. The garage will be structurally independent of those buildings.
4. A 20-25 cm (8-10 inches) thick slab with proper reinforcement, without strip footings, should be acceptable, right?

What do you think? 🙂

netuser schrieb:

A slab foundation 20-25cm (8-10 inches) thick with proper reinforcement, without strip footings, should be fine, right?

That should absolutely be fine, but only a geotechnical engineer can give a definite answer.