The easiest way to calculate the amount of topsoil you'll need is to multiply the totals together to get the cubed feet.
If you notice you have two units of feet and one of inches. Since 16 inches is over one foot but less than two feet you'll still have to purchase an additional bag of topsoil to cover the extra 4 inches. So let's just round the 16 inches up to 24 inches or 2 feet.
24 ft x 8 ft x 2 ft = 384ft³.
if that is 3 ft deep it would require 96 yards... IF it is 3 inches deep it would require 24 cubic yards
That depends upon how deep the soil bed is and how much moisture is in the topsoil. But here are some ballpark numbers for you: A yard of soil will cover a 10' by 10' area to a depth of three inches. In other words, figure a third of a yard per 100 square feet for every inch of depth. Length x width x # of inches deep divided by 324 = the number of cubic yards needed for that task.
40 pounds of topsoil is about 2 cubic feet, which will cover an area of 12 square feet at 2 inches deep.600 square feet divided by 12 square feet per bag is 50 bags.Answer50 bags
one ton equals one cubic meter of soil was 100mm deep it would cover 7sqm
This question cannot directly be answered without having some kind of an idea for the volume of 40 pounds of the topsoil you intend to use (also known as its density). There are huge differences between eg. peat and sand, both which can reasonably be called "topsoil".
if that is 3 ft deep it would require 96 yards... IF it is 3 inches deep it would require 24 cubic yards
You already have a square yard of topsoil, so how does 20 inches of depth get you the volume of topsoil? There are 36 inches in a yard, and you have 20 inches of topsoil depth that's 20/36ths of a yard of topsoil depth. That's 0.555... or about 0.56 yards. The volume of topsoil is 1 yard by 1 yard by 0.56 yards, or about 0.56 cubic yards of topsoil.
That depends upon how deep the soil bed is and how much moisture is in the topsoil. But here are some ballpark numbers for you: A yard of soil will cover a 10' by 10' area to a depth of three inches. In other words, figure a third of a yard per 100 square feet for every inch of depth. Length x width x # of inches deep divided by 324 = the number of cubic yards needed for that task.
15.833... [cubic] yards.
100' x 1"= 100 sq ft. x 4" deep= 33.3 CUBIC feet. That is about 1.24 cubic yards.
40 pounds of topsoil is about 2 cubic feet, which will cover an area of 12 square feet at 2 inches deep.600 square feet divided by 12 square feet per bag is 50 bags.Answer50 bags
The volume of an area 24 feet round and 45 inches deep is: 1,700 cubic feet.
For 2 feet deep, you need 230 cu. yds (3100 x 2) / (27) For 2 inches deep, you need 19 cu yds
Minimum 8 inches, ideally 12 inches, so they can establish a good root system. If you are growing root vegetables, I would start with 12 inches of loose soil.
one ton equals one cubic meter of soil was 100mm deep it would cover 7sqm
This question cannot directly be answered without having some kind of an idea for the volume of 40 pounds of the topsoil you intend to use (also known as its density). There are huge differences between eg. peat and sand, both which can reasonably be called "topsoil".
.21 yards of sand will fill an area 115 inches by 67 inches to a depth of 2.5 inches.