Block dimensions:12″HIGH X 17″LONG X 4″THICK
Blocks
A much bigger block with a cavity/hole going through the center.
Gravel
Screenings-Very dusty gravel
Quarry Products
2" clean medium sized stone
Chips
3/8" Chips. Very small stones
The bigger thicker blocks up from the 4"
Aggregate mix
Concrete block that weighs one tonne.
Bags
An empty big bag.
Regular sized blocks used for most building jobs.
Clause 804