20 x Simpson Strong-Tie Stainless Steel Wall Ties Cavity 100-125mm - WTS2-250

Description

20 x Simpson StrongTie Stainless Steel WALL TIES Cavity 100-125mm - WTS2-250
Type 2 wall ties are suitable for general purpose applications such as domestic and small commercial buildings upto 15m in height. They can also be used in buildings with heights exceeding 15m, but should only be used in thosesituations if shown to be of adequate performance by calculation. Use in flat sites where the basic wind speed is up to31 m/s and the altitude is not more than 150m above sea level.
Recommended Positioning and Density
For walls in which both leaves are 90mm orthicker, masonry ties need to be placed atnot less than 2.5 per square metre (900mmhorizontal x 450mm vertical centres).
The ties should be evenly distributedthroughout the wall area, with the
exception of around openings and should bestaggered where possible.
Insulation Board
Where insulation board is installed within thecavity and restrained by ties with insulationretaining clips(Simpson Strong-Tie ref. IRC001), it may be
necessary to reduce thehorizontal spacing of the ties to 600mm.
At vertical edges of an opening,unreturned or unbonded edges, and verticalexpansion joints - additional ties should beused at a rate of one per 300mm (height) andlocated not more than 225mm from the edge.
Length of Tie and Embedment
Wall ties should be of the correct length to ensure
they are fully embedded in the masonry.
The tie should have a minimum embedmentof 50mm in each leaf, but also allow for sitetolerances relating to the cavity width and centring
of the tie.
The recommended tie lengths will, therefore, achieve an embedment of between 62.5mm and75mm.
For the most suitable tie length, see the“Recommended Masonry to Masonry Tie Length”table.
Sound Resistance
As stated within the Approved Document E 2003 - Resistance to the Passage of Sound - wall ties used
in external and separating cavity walls have to have a minimum value of dynamic stiffness to reduce the transmission of airbornenoise. Ties are separated into Type A and Type B.
Type A: Can be used in separating walls and external walls subject to them also having the required structural capacity. Theycan be butterfly ties or other ties with a dynamic stiffness of less than 4.8 MN/m3.
Type B: Can only be used in external cavity walls subject to them also having the required structural capacity. They can bebutterfly ties or other ties with a dynamic stiffness of less than 113 MN/m3
Type 2 wall ties are suitable for general purpose applications such as domestic and small commercial buildings upto 15m in height. They can also be used in buildings with heights exceeding 15m, but should only be used in thosesituations if shown to be of adequate performance by calculation. Use in flat sites where the basic wind speed is up to31 m/s and the altitude is not more than 150m above sea level. At vertical edges of an opening,unreturned or unbonded edges, and verticalexpansion joints - additional ties should beused at a rate of one per 300mm (height) andlocated not more than 225mm from the edge. Type A: Can be used in separating walls and external walls subject to them also having the required structural capacity. Theycan be butterfly ties or other ties with a dynamic stiffness o