Chips
3/8" Chips. Very small stones
Blocks
Regular 4" block with a 90 degree offset.
Bags
An empty small bag.
Concrete block that weighs one tonne.
Quarry Products
Plastering sand
A tonne bag of sand.
Gravel
Screenings-Very dusty gravel
Small empty heavy duty sand bag.
Regular 4" block with a 30 degree offset.
Clause 804
Drainage stone-small smooth rounded stone