62 –
TANDEM
®
SYSTEM
CONSTRUCTION OF OUTDOOR LIVING COMPONENTS WITH THE TANDEM MODULAR GRID
CONCRETE DECK
To cover a concrete deck, you must comply with
additional minimum design criteria detailed below:
The minimum thickness of the slab should be 140 mm (5 1/2
"
)
The slab should be reinforced with a minimum 10M reinforcement
at 300 mm (12
"
) c / c in both directions and positioned at the center
of the slab . The concrete deck should be supported by pillars of
reinforced concrete (Sonotubes), 200 mm (8
"
) in diameter with
a minimum footing of 600 mm (24
"
) or larger in diameter .
The compressive strength of the concrete (slab and pillars)
must be at least 30 MPa with 5% to 8% entrained air .
Maximum distance between pillars: 2400 mm (8 ft)
Maximum overhang of concrete slab: 600 mm (2 ft)
To attach the components of the wooden structure to the concrete slab,
you should use mechanical anchors like Hilti Kwik Bolt TZ
(12 mm diameter by 140 mm long) or equivalent (not supplied by Permacon) .
Leave a space of at least 12 mm (1/2
"
) between the top
of the Tandem wall and the underside of the concrete slab .
CONCRETE DECK SKIRTING –
PLAN VIEW
2 .4 m
(8 ft)
300 mm
(1 ft)
300 mm
(1 ft)
Post
Ø 200 mm (8 in)
450 mm
(1 ft 6 in)
2 .55 m
(8 ft 6 in)
Concrete foundation wall
Concrete slab
140 mm (5 1/2 in)
minimum thickness
