Block dimensions:12″HIGH X 17″LONG X 4″THICK
Gravel
Screenings-Very dusty gravel
Blocks
Regular 4" block with a 30 degree offset.
Bags
Small empty heavy duty sand bag.
Quarry Products
2" clean medium sized stone
Regular 4" block with a 90 degree offset.
Aggregate mix
Concrete block that weighs one tonne.
A much bigger block with a cavity/hole going through the center.
Drainage stone-small smooth rounded stone
Plastering sand
Clause 804