Installation Guide

Use the quick reference chart or calculate number of blocks needed per formula below.
Note: Quick reference chart is rounded up to account for additional pieces for splitting.
Seat/Freestanding Wall Estimating
20
Calculate number of blocks needed for project. If building on top of existing paver or concrete base, exclude adding
number of blocks needed for buried base course.
=
calculate exposed area of wall
area of both sides of wall (sq. in.)
area of block face
# of blocks needed for exposed wall
wall
length (in.)
______X______x2=
exposed wall
height (in.)
_
:
+
minimum # of blocks*
Calculate base material (paver base or
3
/
4
-inch minus [with fines] aggregate) needed for project. Base material is
not needed if building on top of existing paver or concrete base. Calculations are based on an average of straight
and curved walls.
calculate average
volume of base material
volume of base (cu. in.)
cu. in. of base material
_
:
1,728
=
=
total cu. ft. of base material
wall
length (in.)
______X74=
X
compensation
for compaction
compensation for compaction
Quick Reference Chart Number of Blocks Needed
estimated # of blocks
X
1.05*
=
calculate number of blocks
needed for buried base course
# of blocks needed for base course
wall
length (in.)
______11.7x2=
block
length (in.)
_
:
*Itisrecommendedthatyoupurchase5percentmoreproductthanestimatedtoaccountforsplittingandbreakage.
1.25
Number of Courses (Height)
5' 10' 15' 20' 25' 30'
1 Course/base course (4") 12 22 32 42 54 64
2 Courses (8") 22 42 64 84 106 126
3 Courses (12") 32 64 96 126 158 190
4 Courses (16") 42 84 126 168 210 252
5 Courses (20") 54 106 158 210 264 316
6 Courses (24") 64 126 190 252 316 378
average
trench area
(sq. in.)
Wall Length
46
(sq. in.)
For cap estimating see page 16.