ᐅ Garage attached directly to a single-family house. Is the foundation sufficient?

Created on: 22 Mar 2011 13:29
P
perlenmann
P
perlenmann
22 Mar 2011 13:29
Hello,

We are now close to starting construction on the house. Now the question is whether I should have the general contractor, as he suggests, create a foundation along the house wall. For a 9m (30 feet) garage, he wants to install three 30cm (12 inches) diameter foundation piles (which would cost around 1000€).

Wouldn't it be sufficient to have the garage company create a strip foundation instead?
E
E.Curb
22 Mar 2011 14:03
Hello,
who is responsible for the structural stability verification, in other words the statics? It should be documented somewhere. Or is the garage being built without structural calculations?

Regards
P
perlenmann
22 Mar 2011 14:17
I suppose the person I hire will handle that. But I haven’t done it yet. My general contractor is responsible for the structural calculations of the house and assumes so. I’ve heard from another source that a strip foundation is sufficient for a garage.
B
Bauexperte
22 Mar 2011 17:31
Hello,
Perlenmann schrieb:
We are now just about ready to start building the house. The question is whether I should have the general contractor create a foundation along the house wall, as he suggests. For a 9m (30 feet) garage, he wants to install three 30cm (12 inches) diameter foundation piles, which would cost around 1000€. Wouldn't a strip footing from the garage company be enough?

Yes, a strip footing is sufficient – and as you described it, your general contractor is actually offering you a strip footing; by the way, the price is completely reasonable.

Kind regards
E
E.Curb
23 Mar 2011 07:49
Hello,
just to make sure I understand correctly: Your general contractor plans to create a strip foundation for your garage with a depth of 3cm (1.2 inches) along the house wall? Is the exterior wall of your house also the interior wall of the garage? How deep are the foundations for the exterior walls of the garage supposed to be?

Regards
P
perlenmann
23 Mar 2011 13:21
No.

He wants to install a 30cm (12 inch) pipe running vertically from the bottom of the basement (3 meters (10 feet) deep) up to the top of the basement wall, with three sections over 9 meters (30 feet).

Currently, there is no mention of a strip foundation in his plan. He only wants to properly secure the side facing the house; how the garage will be supported with an additional foundation is not being considered at this point.

I'm asking because I have no experience with this and had assumed that a strip foundation would be sufficient.

Would that possibly be needed in addition?