What sizes and thicknesses of Giallo Siena marble are available?
We hold 15, 18 and 20 mm as standard stock.
Answer
How do I calculate the weight of a Giallo Siena marble floor?
How much, and how heavy
Surface area times the nominal weight per square metre for the thickness: 40.65 kg/m² at 15 mm, 48.78 kg/m² at 18 mm and 54.20 kg/m² at 20 mm. Add an allowance for cutting waste, and remember that calibration takes one to two millimetres off, so a weighed slab reads light.
The figures
| Thickness | Nominal weight per m² | Source |
|---|---|---|
| 15 mm | 40.65 kg/m² | Derived from the published apparent density |
| 18 mm | 48.78 kg/m² | Derived from the published apparent density |
| 20 mm | 54.20 kg/m² | Derived from the published apparent density |
| Apparent density | 2710 kg/m³ | EN 1936-07 |
| Allowance | Yours to set; the calculator on this site leaves it open | Published practice |
Why this stone behaves this way
The floor has to be carried by something, and the figure that carries it is the weight of the stone. The published density is agreed between both sources, so the calculation is sound once the thickness and the allowance are fixed.
What these figures are, and what they are not These are nominal weights calculated from a published density. A weighed slab reads slightly below them because calibration removes material, and a certificate for the block governs.
Where these figures come from
- S1 granitalsiena.com — Giallo Siena marble technical sheet (EN standard test values; Politecnico di Torino marble laboratory)
- S6 StoneContact — Giallo Siena Unito and Broccatello di Siena entries, carrying Università di Pisa - Politecnico di Torino test values for the material
- S16 the architect complete specification guide to marble (bookmatching, edge profiles, calibration, finish behaviour)
Where to go next
On the same subject
More questions about Giallo Siena marble
How much does Giallo Siena marble weigh per square metre?
40.65 kg per square metre at 15 mm, 48.78 kg at 18 mm and 54.20 kg at 20 mm, at the published apparent density of 2710 kg/m³.
Can Giallo Siena marble be cut thinner than 20 mm?
Yes.
This answer sits on the How much, and how heavy page, with the rest of the questions about it.
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How do I calculate the weight of a Giallo Siena marble floor?