18 –
TANDEM
®
SYSTEM
BUILDING A DOUBLE-SIDED WALL
DOUBLE-SIDED TANDEM UNIT ASSEMBLY
Installing a double-sided wall requires the use of two veneer units held together
using connectors . Connectors are inserted into the mortises on the veneer units
thus connecting them two by two in order to create the double-sided Tandem unit .
The work is complete once 20 mm (3/4 in) clean stone is placed between the
veneers of every other course, and the capping unit is installed . Lafitt and Melville
Tandem 90 and 180 veneer units, as well as Esplanade units can be used to build
straight or curved double-sided walls, as well as 90° corners .
Allowable heights
The Tandem wall system can be used to build a double-sided wall
with a maximum above-ground height of 711 mm (28 in) . The wall is built
completely vertical without a slope .
DOUBLE-SIDED LAFITT
TANDEM MODULES
DOUBLE-SIDED ESPLANADE TANDEM MODULE
DOUBLE-SIDED TANDEM UNIT ASSEMBLY
268 mm (10 9/16 in)
90 mm (3 9/16 in)
Veneer unit
Veneer unit
Double-sided connector
286 mm (11 1/4")
180 mm
(7 1/16")
Veneer unit
Double-sided connector
Note: Lafitt and Melville Tandem 180 wall modules must be assembled using pairs of double-sided
connectors installed one on top of the other for greater stability .
268 mm (10 9/16 in)
STARTER UNITS
To build the double sided Tandem wall, begin by placing the
starter unit directly on the granular base perpendicular to the
wall and levelling it .
STARTER UNIT
INSTALLATION
(PLAN VIEW)
STARTER UNIT
(PLAN VIEW)
200 mm
400 mm