Paving Sand & Sub-Base Calculator
Calculate sharp sand bedding volume, density, bulk weight, bag counts, jointing kiln sand, and total costs for patio and driveway paving.
1. Size of Your Paved Area
Recommended sand depth?| Patio / Paving Zone | Length | Width | Unit |
|---|
2. Sand Bedding & Material Density
Standard bedding depth is 35mm – 50mm (1.5" to 2").
Default 1,602 kg/m³ (~100 lb/ft³) for sharp sand.
Adds ~1 bag of Kiln-dried silica sand per 15 m².
Calculated Wet/Compacted Sand Volume:
1.50 m³ (52.97 ft³)
3. Bagging & Wastage Buffer
4. Cost Estimations
€
Paving Base Cross-Section View
Architectural cross-section showing slab, sharp sand bedding, edge restraint, and sub-base layers.
Estimated Materials & Costs
Total Paving Area:
0.00 m² (0.00 ft²)
Sand Volume Required:
0.00 m³
Total Sand Weight Needed:
0.00 t
Accounting for 10% compaction & spillage buffer.
Bulk / Jumbo Bags (850kg):
0 Bag(s)
Small 25kg Bags Equivalent:
0 Bag(s)
Kiln-Dried Jointing Sand (20kg):
0 Bag(s)
Estimated Total Cost:
€0.00
Standard Paving Sand Specs:
- Bedding Sand: Always use sharp sand (also called coarse grit sand) for slab bedding. Do not use soft building sand as it compresses excessively.
- Sand Density: Coarse sharp sand weighs approximately 1,600kg to 1,650kg per cubic metre when uncompacted.
- Jointing Sand: Use kiln-dried silica sand brushed into slab joints after laying. 1 x 20kg bag typically covers 15 m² of standard block paving or paving flags.
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