Maximum Vehicle Weight

Grasscrete Type

Slab Depth

Reinforcement Details

Minimum Sub -base Depth*

Sub-base Type

Upto 3.4 tonnes

GC3

76mm

200 x 200 mm grids x 6 mm

100 mm 

Specifications for UK highway works Clause 803 Type 1 sub-base

Upto 4.3 tonnes

GC3

76mm

200 x 200 mm grids x 7 mm

150 mm 

Upto 10.6 tonnes

GC1

100 mm

200 x 200 mm grids x 7 mm

150 mm

Upto 13.3 tonnes

GC1

100 mm

200 x 200 mm grids x 8 mm

150 mm

Upto 30 tonnes

GC2

150 mm

200 x 200 mm grids x 8 mm

150 mm 

Upto 40 tonnes

GC2

150 mm

200 x 200 mm grids x 10 mm

150 mm