ᐅ Foundation slab, plinth height, surveying

Created on: 24 Dec 2021 08:39
K
Kalibri
K
Kalibri
24 Dec 2021 08:39
Hello everyone,

I hope this is the right forum for my issue; if not, please move it.

We are building a prefabricated timber frame house on a concrete slab. Initially, it was agreed that the house would be positioned 15cm (6 inches) above ground level, with a gravel bed as splash protection.

Now, the architects’ plans have been technically reviewed, with comments regarding the plinth height.

From my non-professional perspective, the plan does not seem to match this. According to the site plan, the finished floor level is only 13 cm (5 inches) above the pedestrian walkway. The top edge of the concrete slab appears to be level with the surrounding ground.

It seems there is a discrepancy. The architect refers to the 15 cm (6 inches) specification having been communicated to the construction company.

But then, doesn’t that mean all the height dimensions on the building plan are incorrect?

I might be wrong, but in my opinion, the plans need to be corrected. To ensure a slight slope away from the house, I would need a trench between the house and the pedestrian path.

Our architect does not seem willing to properly address this.

If the house is built according to the current plan, I believe we would have to install a significantly more complex recessed splash guard around the house, which is not what we want.

Am I missing something? Is my assessment wrong?
i_b_n_a_n24 Dec 2021 09:19
Isn't something still missing? (plans / drawings / photos) ?
K
Kalibri
24 Dec 2021 12:59
Does this help?

The elevation of the surrounding terrain is 525.82 meters (1724.4 feet) and behind the house it is 525.54 meters (1723.3 feet).
The ground level will be raised accordingly.

Section through a two-story house with staircase, roof structure, and carport
11ant24 Dec 2021 18:56
Kalibri schrieb:

Initially, it was agreed that the house would be 15cm (6 inches) above ground level, [...] According to the site plan, the finished floor level is only 13cm (5 inches) above the pedestrian walkway height.
Aside from the fact that your drawing shows only the heights of the house, but not the terrain: are you seriously concerned about a 2cm (0.8 inch) tolerance between the actual and planned absolute measurement in construction???
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
K
Kalibri
25 Dec 2021 07:25
No, that’s not what I meant.
As I understand the drawing, the distance from the top edge of the foundation slab to the top edge of the finished floor is 16cm (6.3 inches). Is that correct?
Accordingly, the foundation slab would be completely underground.
However, it should extend 15cm (6 inches) above ground level.
tomtom7925 Dec 2021 07:59
According to this drawing, the foundation slab is below the road level. However, the house is positioned above the natural ground level. Which reference would be used? It appears not to be the road.