Installation Guide

24
Retaining Wall Estimating and Cross-Sections
Quick Reference Chart Number of Blocks Needed
Battered wall
alignment
Vertical wall
alignment
Cross-section of a Battered Wall
12"
Compacted
granular-base
leveling pad
6"
On-site soil
12" of
drainage aggregate
Topsoil
2'
maximum
height
Cap
10.6
O
Cross-section of a Vertical Wall
Cap
On-site soil
Compacted
granular-base
leveling pad
12"
6"
1'4"
maximum
height
12" of
drainage aggregate
Topsoil
Use the quick reference chart or calculate number of blocks needed per formula on page 25.
Note: Quick reference chart is rounded up to the nearest block.
*Battered wall only
Wall Length
Number of Courses (Height)
5' 10' 15' 20' 25' 30'
1 Course/base course (4") 6 11 16 21 27 32
2 Courses (8") 11 21 32 42 53 63
3 Courses (12") 16 32 48 63 79 95
4 Courses (16") 21 42 63 84 105 126
5 Courses (20")* 27 53 79 105 132 158
6 Courses (24")* 32 63 95 126 158 189