50 –
TANDEM
®
SYSTEM
CONSTRUCTION OF OUTDOOR LIVING COMPONENTS WITH THE TANDEM MODULAR GRID
Note: When a section of a unit has veneers that are not directly supported on the ground
(foundation modules, pavers or concrete slabs), for example for installing doors, the veneers
must be supported on shelf angle sections attached to the wood frame .
BASE SUPPORT FOR OUTDOOR UNITS
Outdoor units like a bench, flower box or outdoor fireplace can
usually be built on a base of concrete foundation (starter modules)
or placed directly onto concrete pavers . A granular base of compacted
crushed stone should be laid before the foundation . However, we
recommend that long or heavy units be supported on a concrete slab
(minimum thickness of 150 mm or 6") . We also recommend that units
like barbecues or tables with a single granite, quartz or marble top over
their entire surface be supported on a reinforced concrete slab to prevent
the top from breaking if the ground shifts . In each case, a compacted
granular base should underlie the concrete slab .
COMPONENTS SUPPORTED
ON A CONCRET SLABS – CROSS SECTION
Tandem capping unit
Concrete pavers
Tandem veneer units
(with modular grid)
Concrete slab 150 mm (6 in)
Granular foundation