A tonne bag of sand.
A tonne bag of sand made up in store and ready to be collected.
Chips
3/8" Chips. Very small stones
Gravel
Screenings-Very dusty gravel
Blocks
Regular 4" block with a 90 degree offset.
Clause 804
Regular sized blocks used for most building jobs.
Quarry Products
2" clean medium sized stone
Regular 4" block with a 30 degree offset.
Plastering sand
Concrete block that weighs one tonne.