Ground Screw Calculator

We have built our calculator as a guide to help you identify the number of ground screws you require for your project. DIY Ground Screws can support lightweight garden projects such as decking, fencing, sheds, small summerhouses, etc. For larger structures or to support heavier loads such as garden offices, gym equipment, machinery, hot tubs, please get in touch with our team, who will be happy to help.

Enter the length and width for your project below to get a guide as to how many ground screws you'll need.

We estimate that you'll need DIY Ground Screws for your project, in a layout of rows of .

If you have any questions, please get in touch, and we'll be happy to help.

Read to order your ground screws?

Ground Screws
self install ground screws
Ground Screw Extensions
self install ground screw extensions
Brackets & Fittings
ground screw brackets and fittings
Tools & Accessories
self install tools

Calculate Load-bearing Capacities

self-install ground screw load-bearing capacities

1 kN = circa 100kg

This graph shows our self-install ground screws' technical data and should be referred to when calculating the ground screws required for your project.

weight of structure + weight of total content (inc furniture, people, potential snow load, etc.) / number of ground screws = LOAD CAPACITY OF SINGLE GROUND SCREW

It is essential in your calculation to also account for the project's terrain, whether it is sloping or flat, and consider the quality of subsoil, where soft, muddy and sandy soils will generally have a lower load capacity.

The values presented were determined during tests in a soil type of semisolid loam. All values are approximate but are reduced by a safety factor of 35%. Listed values of capacity are based on the length of ground screw in the ground, not the total length of complete ground screw.

It is important to install your ground screw foundation to a depth that feels stable. The more resistance installing your screw the greater the stability achieved. BAYO•S and RADIX are not liable for any damage due to insufficient or incorrect selection or installation of ground screws.

If in doubt please contact our team to discuss.