Accession Number : AD0675584

Title :   RAIN PENETRATION OF WALLS OF UNIT MASONRY,

Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF BUILDING RESEARCH

Personal Author(s) : Ritchie,T.

Report Date : JUN 1960

Pagination or Media Count : 4

Abstract : Rain penetration of walls of unit masonry is a common problem, which may arise for several reasons. When units and mortar are not completely bonded together penetration may occur at the interface. In addition, when permeable units are used, leakage may take place through them. Structural cracks form yet another path for rain penetration. In the design of a building consideration should be given to the possibility of stresses being set up in the masonry from differential movements of various parts of the building. Cavity wall construction affords a means of obtaining resistance to rain penetration and walls of this type have come into extensive use where severe exposure to rain has caused leakage problems in solid walls. Treatment of a masonry wall affected by rain penetration requires 'plugging' of the openings between mortar and unit, and in addition, often a treatment of the face of the unit. (Author)

Descriptors :   (*STRUCTURES, *WEATHERPROOFING), PENETRATION, BRICK, DEGRADATION, CONSTRUCTION MATERIALS, WATER VAPOR, MOISTURE, CRACKS, PROTECTION, STORMS, WALLS, CANADA

Subject Categories : Structural Engineering and Building Technology

Distribution Statement : APPROVED FOR PUBLIC RELEASE