ᐅ Calculation of Gross Volume

Hello,

Can someone help me calculate the renovation volume?
I have a quote and now want to know how many cubic meters my floor plan has.

House key data:
9.875 * 10.75 m (32.4 * 35.3 ft) footprint
2 full floors
No basement
Slab thickness 0.25 m (10 inches)
Ground floor height 2.60 m (8.5 ft)
First floor ceiling thickness 0.20 m (8 inches)
First floor height 2.72 m (9 ft)
Attic ceiling thickness 0.18 m (7 inches)
Gable roof 30 degrees

Garage key data:
6.23 * 8.33 m (20.4 * 27.3 ft) footprint
Garage height 2.74 m (9 ft)

Does the attic have to be included in the calculation? I’ve heard something about a factor of 0.5.

It would be great if someone knows how to do this.

You are calculating the volume; nothing is being halved.

But with the information provided, no one can calculate the volume accurately, as the base slab and ceiling including the floor construction hardly match these dimensions. Or are these the rough interior dimensions?

mikiliki1232 schrieb:

Can someone help me calculate the enclosed volume?
Does the attic have to be included? I heard something about a factor of 0.5.

You are mistaken: the partial inclusion applies to floor plan areas between 1 and 2 meters (3 and 6.5 feet) in height.

Instead of "enclosed volume," the term "gross volume" (Bruttorauminhalt) is now used. This gross volume (GVO) is categorized into classes a = enclosed, b = covered, and c = open.

Calculation methods and weighting factors vary depending on the standard applied. For building permit applications (building permit/planning permission), the actual floor-to-ceiling height (room height plus ceiling thickness/roof thickness) is generally used. Property lenders, however, often apply fixed factors (e.g., assumed floor height of 2.80 m (9.2 ft) for full floors and different factors for attics depending on whether they are developed or not).

How it is calculated therefore depends on who requires the result. Without specifying the standard or calculation method used, the numbers are not interpretable.

For the related question of the building mass ratio (Baumassenzahl), different calculation and weighting methods apply.

Unfortunately, linking is not allowed here, but explanations on GVO and calculation sheets can be found on elkage.de and from various real estate agents and lenders.

mikiliki1232 schrieb:

All raw dimensions

Then those are fine; for finished plastered dimensions, about 2% should be deducted.

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So the ground floor should have a finished ceiling height of about 2.45m (8 feet)?

Assuming the shorter side is the gable, the following calculation should be suitable:

Gross volume (total) = (9.875 * 10.75) * (0.25 + 2.60 + 0.20 + 2.72 + 0.18) + (9.875 * 10.75) * 2.85 / 2 + 6.23 * 8.33 * 2.74

Whether and to what extent this helps you... up to you.