TANDEM
®
SYSTEM
–
15
BUILDING A RETAINING WALL
90° OUTER CORNER DETAIL
180 mm LAFITT OR MELVILLE TANDEM
There are three ways to build an outer corner using
Lafitt or Melville Tandem 180 units:
Option 1
Use an uncut
textured end veneer unit E and start the wall
perpendicularly, leaving an empty space that will be backfilled
with clean stone .
Option 2
Use an uncut
textured end veneer unit F or G attached to a
structural unit E, cut in half . The empty space is backfilled with
clean stone .
Option 3
Use a
textured end veneer unit E, F or G cut at 222 mm, and
start the wall perpendicularly, simply pressing it up against the
existing wall . Gently hammer the freshly cut side to make the
finish similar to the other sides .
90° OUTER CORNER DETAIL
MIX OF LAFITT OR MELVILLE TANDEM 90 AND 180
To build a corner for a wall featuring a mix of Tandem 90
and 180 units, for each given row height, use corner units
of the same height (Tandem unit with associated corner veneer) .
Corners are built using the options available for that height
(90 or 180), as illustrated and explained earlier in this document .
This principle applies to both outer and inner corners .
The choice of corner unit heights is a matter of aesthetics .
The 90 and 180 units must be inserted in a similar proportion
to the remainder of the wall .
OPTION 1
OPTION 2
OPTION 3
Backfilled with 20 mm clean stone
Structural unit E
cut in half
Textured end veneer unit E,
F or G cut at 222 mm
Structural unit
Corner connector
Textured end veneer
unit F or G uncut
90° OUTER CORNER DETAIL
ESPLANADE TANDEM
Build an outer corner by simply overlapping the ends of the
veneer units . The corner is formed by installing a veneer F
or G unit on the end of the last Tandem unit, and inserting a
corner connector to join the two components and strengthen
the corner . Then, cut a
structural unit and install it behind the
previously attached veneer .
1
ST
ROW
2
ND
ROW
Structural unit cut in half
Structural unit cut in half
Veneer unit E
uncut
BUILDING A RETAINING WALL
