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Type 1 sub-base
Depth75mm
Volume3.15 m³
Weight5,985 kg
Tonnes5.99 t
Order9 bulk bags
Mortar bed (1:4)
Depth50mm
Volume2.1 m³
Cement630 kg
Sharp sand2,688 kg
Cement29 × 25kg
Slabs required
Size600 × 600 mm
PatternGrid
Area42 m²
Joint10mm
General waste10%
Slabs125
Excavation & spoil
Total dig125mm
Volume5.25 m³
Soil typeClay
Spoil (loose)6.83 m³
Est. weight~9.45 t
Skip neededLarge Skip
Layer cross-section
Type 1 sub-base
Compacted MOT hardcore
75mm
Mortar bed (1:4)
Bed / laying course
50mm
Flags / slabs / surface
Your chosen surface material (not included)
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UK standards applied: Type 1 compacted at 1,900 kg/m³ · bulk bags 850 kg · 25 kg cement bags · sharp sand 1,600 kg/m³ · aggregate 1,700 kg/m³ · semi-dry mortar bed (1:4 cement:sharp sand) · soil expansion clay ×1.3, chalk ×1.2, sand ×1.15. All quantities include 10% waste. Always adjust for site conditions.