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It is common in older housing stock to find that the external walls are not tied to the floors. Masonry facades are also frequently parting company with the main structure of a building due to poor bonding at the junction of the façade and internal partitions or party walls. Retrofit lateral restraint systems are designed to arrest the outward thrust of bowing walls.
There are two methods of adding lateral restraint to the façade of a building to prevent or arrest bulging:
Where the façade of a building is separating from perpendicular masonry partitions or party walls the two walls can be reconnected using axial constraint ties, which can be bonded to, or driven through, solid flanking walls and into the cross walls.
Where there is no tying mechanism between an external wall and the flooring diaphragm or stud partitions then lateral constraint can be provided by stiff remedial ties that are driven into the structural timbers and subsequently bonded to the masonry façade.
Axial lateral restraint ties offer a faster, stronger and less disruptive repair for bulging walls than can be achieved with traditional lateral restraint straps.