Description and Use

The Stainless Steel single expansion remedial wall ties are manufactured from Brass and Austenitic 304 Grade Stainless Steel. The tie has been designed with Brass expanders being more sympathetic to the material we are fixing it to. The inner fix is achieved using Polyester Resin.

Application

A 10mm diameter hole is drilled through the outer leaf brick and into the inner leaf brick to a minimum depth of 55mm. The hole should be drilled at a slightly inclined angle to avoid ingress of dampness (as recommended in BRE Digest 329) and if necessary, blown out to remove any loose dust and drillings. Care must be taken in selecting the correct length wall tie for the appropriate cavity width.

The resin is inserted into the back of the hole until filled, the PM100 is then inserted and located into the hole in the inner leaf. The PM10 should be left approximately 10mm inside the face of the outer brickwork. Once in place and the resin has cured, a pull test for the inner leaf should be carried out using the apropriate adapter and testing machine.

The outer leaf is loaded by fitting the fixing tool on to the inner nut and turning clockwise until hand tight. If testig is required on the completed installation it is performd as described previously.

Typical loads achieved are in excess of 2.5Kn

Below are listed typical loads under testing in accordance with BSI DD140 Part 1 and provide indicative values of the tie performance in various base materials. The couplet test produces results of a conservative nature compared to actual wall tests.

Note: The above results are mean failure loads and are either the ultimate pull out load or the load at a deformation of 5mm, whichever occurred first.