Block dimensions:12″HIGH X 17″LONG X 4″THICK
Blocks
Concrete block that weighs one tonne.
Bags
Small empty heavy duty sand bag.
The bigger thicker blocks up from the 4"
Quarry Products
Plastering sand
Regular 4" block with a 90 degree offset.
An empty small bag.
Drainage stone-small smooth rounded stone
Gravel
Clause 804
Aggregate mix
4" clean large stone