An empty small bag.
An empty small bag which can be filled with 4 stone weight of sand, gravel or chips. Bought on its own as an empty bag.
Blocks
Concrete block that weighs one tonne.
The bigger thicker blocks up from the 4"
Quarry Products
A tonne bag of sand.
Plastering sand
Drainage stone-small smooth rounded stone
Gravel
Aggregate mix
Chips
Regular 4" block with a 30 degree offset.
2" clean medium sized stone
Regular sized blocks used for most building jobs.
Clause 804