#Soil volume calculator for pots how to#

If your project is an irregular shape, maybe it’s curvy, maybe it has lots of angles, perhaps the height of it varies? The easiest way to calculate areas and volumes is to divide it into simple shapes. The final answer is the volume – this is the figure you need.ĭivide the final answer (the volume) by 0.86, this will tell you how many big bags of topsoil you need. (that means 15cm would be expressed as 0.15 metres in your sums) Make sure all of the measurements you used were in metres. In simple terms you will be working out width, x length x height Multiply the area you calculated earlier, by the depth of growing medium needed. Decide how deep the existing soil is and then work out how many more cm deep it needs to be. If you are topping up the growing medium for a lawn or a wild flower area, you will need a total soil depth of 15cm or more. If you’re not sure, check with your architect before ordering substrate. Be wary of the weight bearing capacity of your building though. Measure the depth of the edgings and subtract 5cm to allow for the drainage mat and the sedum mat. This will allow you plenty of room to add plants.įor a living green roof, treat it as if it were a huge container. Simply measure from the bottom of planter to about 5cm below the top. If you are filling a raised bed, it’s easy to work out the depth of soil you’ll need. It’s easier than you think and Harrowden are always happy to help if you get stuck. Calculate the horizontal area of your project first and then factor in the depth. This diagram will help you to work out how much topsoil you need to order for your landscaping project. Multiply the height of the triangle by the base and then divide the answer by two. Now calculate the area: For a rectangle:ĭivide the diameter measurement by two to find out the radius of the circle.Īrea = 3.14 x 15 x15 = 706.5 square metres For a triangle Just as you would if you were measuring for turf. Measure the length and the width of a rectangle, the diameter of a circle or the height and width of a triangle. Mark out the area you need to top up with topsoil. TAKE ALL MEASUREMENTS IN METRES – it makes it easier to convert the final quantity into either bagfuls or lorry loads.

#Soil volume calculator for pots how to#

Here’s how to calculate the amount of soil you need for a project and work out how much topsoil to buy. On the other hand, if you have a lot of topsoil left over – what do you do with it? It’s not easy to transport and its bulky to store – particularly if it’s loose. If you don’t have enough topsoil in place before your Meadowmat or turf arrives, it will delay laying. When it comes to buying topsoil or turf, guestimating just isn’t good enough. This article shows you how professionals work out how much topsoil to buy.

It’s very hard to estimate the amount of topsoil you will need for a landscaping project.