Gravity Retaining Walls

Building a
retaining wall
Download Book  | 
Gravity retaining wall typical cross section

Gravity retaining wall typical cross section


Gravity retaining wall base course section

Gravity retaining wall base course section


retaining wall installation

Install base material, level, and compact.


retaining wall installation

Level blocks, adjust where needed.


Step 1: Site Prep and Excavation

If you are building with AB Fieldstone that uses recycled materials, go to AB Fieldstone installation


Stepping up the Wall Base

start retaining wall at the lowest elevation

Start retaining wall at the lowest elevation

Walls built on a sloping grade require a stepped base

Step 2: Install Base Material

Step 3: Install Base Course

Step 4: Install Wall Rock and Backfill Materials

Step 5: Install Additional Courses

*For walls under 4 ft. (1.2 m), an 18 in. (460 mm) wide by 10 in. (250 mm) deep trench with 4 in. (100 mm) of wall rock base material is acceptable.


Install facing unit

Install AB Fieldstone facing units. Level and Adjust


Install anchoring unit

Install AB Fieldstone anchoring units


retaining wall installation backfill

Install and compact wall rock and backfill soils


retianing wall installation Remove All Excess Wall Rock Material

Sweep to remove excess materials for proper placement of the next course


retaining wall installation compact on blocks

Compact wall rock and backfill soils starting on the blocks


retaining wall installation add filter fabric and caps

Install filter fabric and string line to place AB Caps


Base Course for AB Fieldstone

start retaining wall at the lowest elevation

Start retaining wall at the lowest elevation. Use 824 units to span the step up (if available)

Stepping up the Wall Base

When building Step-Ups into a slope, always begin at the lowest wall elevation of the base course.

To create a Step-Up, span a block between the leveling pad and the block course below. Step-Ups are most stable when the upper block has sufficient bearing on the lower block. The length of the 824 assembly (if available) provides the flexibility to make this block ideal for this application. An 812 assembly will work as well.




Backfill with wall rock

Backfill with wall rock

Install Wall Rock and Backfill Materials

Additional Courses for AB Fieldstone

Download Book  |