Specifies the properties of wall ties for use in cavity walls of brick or block, and in masonry veneer walls in which masonry is tied to a supporting frame. Ties are graded into four classifications depending on their characteristic strength and characteristic stiffness. Appendices give minimum labelling requirements and test methods for resistance to moisture movement, strength and stiffness.

First published 1984. Reissued incorporating Amendment a Nov 1984. Reissued incorporating Amendment No 2 1986.