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Landscape & Design

By Sophie Rhéaume • August 13, 2017

Independent Step Construction

Techo-Bloc

Independent step construction method presented for circumstances where the elevation changes result in a modified riser height. The use of Gator Grid – biaxial geogrid – for soil stabilization is presented.

 

 

STEP 1: Install geotextile fabric above the subgrade to keep the base from migrating into that soil.

We used Gator fabric by Alliance Gator (http://www.flex-lock.com/)

gator fabric-1.jpg

STEP 2: Add a drain tile elbowed to the dry well, that is sitting in a bed of 4-inch thick #57 stone.

STEP 3: Place 8 to 10 inches layer of base consisting, again, of #57 stone.

8-10 inch layer of base stone.jpg

STEP 4: Put another layer of Gator Fabric to keep the bedding layer of ¼ inch clean stone (#8) from migrating into the voids of the #57 stone.

STEP 5: Install first step with one row of units below grade. Build the steps vertically using Techo-Bloc patented clip system for optimum alignment.

We used the Raffinato polished 7-inch unit from Techo-Bloc.

pins.jpg

STEP 6: Add clean stone (#57) stabilized with a biaxial grid system behind the step.

We used the Gator Grid from Alliance.

geogrid.jpg

STEP 7: Build the subsequent steps in a modular system, which means that each unit bridges the previous one in order to resist settlement.

Here we used Blu Grande slabs (can also use Para 10x20 to avoid cuts) that we cut into 10-inch pieces to match the Bullnose Grande.

blu polished step.jpg

Here’s the final result:

01052_09_010.jpg

FIND OUT MORE ABOUT CONSTRUCTION DETAILS AND OUR COLLECTION OF STEPS

SPEC BOOK.jpg

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