72 T-NUT LAYOUT
The standard t-nut layout for years has been the 72 t-nut pattern. 72 t-nuts is how many t-nuts that you will install on a 4' x 8' sheet of 3/4" ACX plywood. You would choose this pattern if you are building a school wall or a trampoline park. There are limitations with the 72 pattern as the spaces are 16" apart. That leaves a lot of open space between holds. If you want to be setting routes and boulder problems, scroll down to the 120-pattern.
120 STAGGERED T-NUT LAYOUT
Atomik recommends the 120 Hole T-nut pattern (Staggered). It gives you t-nuts that are 6" apart with each column of t-nuts staggering.
Our reasoning for this density is that on a home bouldering wall, space is at its premium since most are not very big. When route setting on the standard 72-pattern, you will find significant gaps of space between holds. It is easier to set routes on the 120 t-nut pattern because you have more options in terms of the staggering locations and the higher quantity of t-nuts—the Atomik standard for bouldering walls to achieve maximum options for route setting.
120 GRID T-NUT LAYOUT
System Walls use a grid pattern. System walls need to be symmetrical with a tight t-nut spacing for the most options to be able to overlap paths. This 120 t-nut grid pattern makes it easy to set up repeating holds/moves.