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