gravel and edging

[FranWithAVan]

how many tonnes of gravel do I need to cover an area 35ft x 21ft to around 2 - 2half inches deep? Also I'm laying sawtooth edging to contain the gravel from planted borders. What mix do I need to use to lay the edging?

Thx :)

[thedoctor]

See our project on material volumes and you can work out exact tonnage and our mixing concrete project for the edgings.

[FranWithAVan]

Thanks. I'll look those up