Risers
Technical data sheet porphyry risers
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RISERS – UNI EN 12058:2005 1) Natural quarry face – variable thickness 2) Processed surface: flamed, brushed, shot-blasted, honed or polished CONSTANT THIKNESS |
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| Petrographic name | Rhyolitic ignimbrite | ||||
| Colour | Non-dominant variable-colour grades: grey, red, red-violet, rust or mixed colours | ||||
| Main processing |
1) from stratified material with a natural plane, variable thickness, sawn edges; 2) by block sawing and subsequent surface treatment |
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| TYPE |
DIMENSION (mm) free lengths |
THICKNESS (mm) |
SUGGESTED APPLICATION | PROCESSING AND FINISHING CHARACTERISTICS | USEFUL LAYING THICKNESS (mm) |
| Quarry plane | Height > 60 | from 10 to 25 | Cladding for outdoor steps | Exposed edges require side shims and adequate processing | Consider space more than 2,5 cm to which bedding must be added |
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Surface flamed, brushed shot-blasted, polished |
Height > 60 | fixed 20 | Cladding for outdoor-indoor steps | Exposed edges require adequate processing | |