What are the ‘Wall
Ties’?
Wall ties are usually referred to as brick ties, which are
used in the masonries to fix the cavity walls. These are used to fix or bind
the two leaves of a cavity wall together. This allows both the leaves to act to
as homogenous unit. Therefore, wall ties play an important role as it ensures
the long term stability of the masonry.
Insufficient or improper installation of the wall ties can
further lead to the severe structural problems and that includes penetration, cracks in the walls of buildings and even the collapse of the outer masonry
leaf. Wall ties are manufactured from materials which are corrosive and fire
resistant. This also includes a drip formation that can prevent the passage of
water to the inner leaf.
What is a wall tie
design?
Since 1920, there are a large number of buildings being build
that featured cavity walls. Over the years, the shapes of wall ties have gone
under various changes and various materials are being used and these wall ties
have now become obsolete, like plastic wall tie, galvanized steel. Before 1978,
the wall ties were usually manufactured from galvanized steel. Those wall ties
were expected to last a lifetime for the building. But one disadvantage was
that it has then been recognized as that these wall ties can corrode after
15-20 years. Wall ties are strips or bars that are now made of steel that are
used to fix the cavity internally and externally. Both the ends of wall ties
are designed such that it locks tightly in the mortar.
What is the importance
of stainless steel wall ties?
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