Tag: wall

Solid brickwork over the head of openings has to be supported by either a lintel or an arch. The brickwork which the lintel or arch has to support is …

In exposed positions such as high ground, on the coast and where there is little shelter from trees, high ground or surrounding buildings it may well be advisable to …

Up to the early part of the twentieth century walls were generally built as solid brickwork of adequate thickness to resist the penetration of rain to the inside face …

Partial fill   The purpose of the air space in a cavity wall is as a barrier to the penetration of rainwater to the inside face of the wall. …

The brickwork and blockwork over the head of openings in cavity walls has to be supported. Because of the bonding of brickwork and blockwork over the opening it is …

A cill is the horizontal finish to the wall below the lower edge of a window opening on to which wind driven rain will run from the hard, smooth, …

The practical guidance in Approved Document A in regard to openings in walls states that the number, size and position of openings should not impair the stability of a …

The spacing of wall ties built across the cavity of a cavity wall is usually 900 mm horizontally and 450 mm vertically, or 2.47 ties per square metre, and …

Iron ties which were used to tie the leaves of the early cavity walls were later replaced by mild steel ties that became standard for many years. In contact …

Resistance to weather Between 1920 and 1940 it became more usual for external walls of small buildings to be constructed as cavity walls with an outer leaf of Resistance …