National Shipping
WTS4: Type 4 Wall Ties: Masonry Light Duty Type 4 wall ties are light duty, suitable for box-form dwellings up to 10 metres high with leaves of similar thickness, including internal separating cavity walls. Use in flat sites in towns and cities where the basic wind speed does not exceed 25 m/s and the altitude is not more than 150m above sea level.
Material: Austenitic stainless steel.
Recommended Positioning and Density: For walls in which both leaves are 90mm or thicker, masonry ties need to be placed at not less than 2.5 per square metre (900mm horizontal x 450mm vertical centres). The ties should be evenly distributed throughout the wall area, with the exception of around openings and should be staggered where possible. 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 embedment of 50mm in each leaf, but also allow for site tolerances relating to the cavity width and centring of the tie. The recommended tie lengths will therefore achieve an embedment of between 62.5mm and 75mm. Sound Resistance: As stated within the Approved Document E 2003 - Resistance to the Passage of Sound - wall ties used. Type A: Can be used in separating walls and external walls subject to them also having the required structural capacity. They can be butterfly ties or other ties with a dynamic stiffness of less than 4.8 MN/m3.
Shipping Label: building supplies
