Block dimensions:12″HIGH X 17″LONG X 4″THICK
Blocks
Concrete block that weighs one tonne.
Gravel
Clause 804
Regular 4" block with a 90 degree offset.
The bigger thicker blocks up from the 4"
Quarry Products
Drainage stone-small smooth rounded stone
2" clean medium sized stone
Regular sized blocks used for most building jobs.
Aggregate mix
A tonne bag of sand.