# Formula

Discussion in 'Landscape Architecture and Design' started by Bob Shoaff, Aug 15, 2002.

1. ### Bob ShoaffLawnSite Memberfrom CaliforniaMessages: 64

I was wondering if anyone has a formula for figuring how far a ton of rock would spread or a ton of soil....I am assuming there is some simple formula to get a close idea that I am just not thinking of...Thanks..

2. ### SCAPEASAURUSREXLawnSite Senior Memberfrom North JerseyMessages: 835

I dont remember where this came from but another thread on lawnsite..... One yard of mulch, soil, etc with cover 640 sq feet at 1/2" deep, 320 sqft @ 1" , 160 sq ft @ 2" , 92 sq ft @ 3", 69 sq ft @ 4" and so on and so on.....

Also.... at 1" depth.... 1000 sq ft with require 3.13 yards, etc etc,

Wish I had a formula for this.. just have the answers..LOL

3. ### HenryLawnSite Senior Memberfrom Northern NJMessages: 549

The stone will depend on the size you're working with because a smaller stone will give better coverage than a large one. A yard of topsoil is about 1.25 ton (dry)and will cover about 324sf at 1".

4. ### LanelleLawnSite Bronze Memberfrom No.VA, zone 7Messages: 1,361

Since the weight of rock varies according to the type of rock, ask your quarry. Here, we can figure that a ton of #57 will cover 100 sq feet, 2" deep. You may get more or less, so just ask. I've found that the guys at the quarries are accustomed to answering such questions.