Lateral restraint ties are designed for restraining bowing walls to structural timbers that run parallel to them. The ties are used to connect a masonry façade to the flooring diaphragm via two or more timber joists.
The 8mm diameter lateral restraint ties have a drill bit formed in their leading end for cutting into softwood joists.
Lateral restraints are fitted from outside the property with minimal disturbance. In most cases just few floorboards are lifted to determine the position of joists and any wires or pipes. A 14mm clearance hole is made through the façade. The lateral restraints are connected to the setting tool and are driven sequentially into the timbers to simultaneously drill and screw into the wood. A resin fix is provided at the masonry connection to fully restrain bowing walls
To fix lateral restraints, a SDS drill bit, SDS installing tool and some polyester brick-resin is required
Lateral restraint ties are supplied in lots of 50 and bundled in resale packs of 5.
Thor Helical lateral restraint ties are manufactured from AISI304 stainless steel.
They are available in standard lengths of:
TYPICAL PERFORMANCE LOADS Pull Out force in 47mm joists
BS EN 845-1:2013 National Annex NA states that the strap needs to provide an equivalent performance to the prescriptive 30mm x 5mm lateral restraint straps and the tension straps should have a declared tensile load capacity of at least 8kN.
|Lateral Restraint Ties fixed to:
|2 x 47mm wide softwood joists
|3 x 47mm wide softwood joists
|Ultimate Tensile Strength
|Load at 0.2% Proof Stress