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Answer

What size block does Giallo Siena marble come from?

Sizes and formats, and what is held

Average block size 2.50 to 3.20 m by 1.30 to 1.70 m by 1.30 to 2.00 m. Slabs are preferably cut along the grain and against the grain — that is, the hard way, because that is how the published slab sizes come out of a block of this size.

The figures

PropertyValueSource
Average block size2.50–3.20 m × 1.30–1.70 m × 1.30–2.00 mPublished block and slab characteristics
Preferred cutting directionAlong the grain and against the grainPublished block and slab characteristics
Pre-sawing treatmentVacuum resin recommended before sawingPublished block and slab characteristics

Why this stone behaves this way

The block size is the constraint on every slab size, and it is the first thing that has to be settled before a cut list can be checked. Cutting in two directions is slower and it is what makes the yield work.

What these figures are, and what they are not These are published averages for the material, not the dimensions of any particular block. A block is selected against the job, not the other way round.

Where these figures come from

  • S1 granitalsiena.com — Giallo Siena marble technical sheet (EN standard test values; Politecnico di Torino marble laboratory)

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Sizes and formats

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