A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Field Measurements of the Sound Insulation of Plastered Cavity Masonry Walls
The results are described of measurements made as part of a survey of sound insulation between modern dwellings. Cavity walls built of brickwork, dense aggregate blockwork, lightweight aggregate concrete block work are discussed. For brick and dense aggregate blockwork walls, discussion is restricted to those with flanking structures approximating to one or other of the deemed-to-satisfy specifications in the Building Regulations. For lightweight aggregate blockwork walls, the data are subdivided according to whether the cavity width was 50-70 mm or at least 75 mm, because with the wider range of cavities such walls are generally interpreted as meeting a deemed-to-satisfy specification. A similar subdivision is made for walls of aerated concrete blockwork. The level of performance included as a deemed-to-satisfy provision in the Regulations was achieved by all the dense blockwork walls. Rather less than half the cavity brick walls tested achieved the performance standard; the performance of these walls was apparently lower than that of plastered solid brick walls tested in the survey, although the difference is not large enough to be statistically significant. The performance of recent cavity brick walls appears to be significantly lower than that of similar walls in the period 1948 - 1956. The mean performance of lightweight aggregate and aerated concrete blockwork walls was significantly below the level required to meet the performance standard, irrespective of cavity width, and their performance was significantly lower than that for plastered solid brick walls tested in the survey. Evidence on whether increasing cavity width generally tends to improve performance is inconclusive. (Copyright (c) British Crown Copyright 1980.)
Field Measurements of the Sound Insulation of Plastered Cavity Masonry Walls
The results are described of measurements made as part of a survey of sound insulation between modern dwellings. Cavity walls built of brickwork, dense aggregate blockwork, lightweight aggregate concrete block work are discussed. For brick and dense aggregate blockwork walls, discussion is restricted to those with flanking structures approximating to one or other of the deemed-to-satisfy specifications in the Building Regulations. For lightweight aggregate blockwork walls, the data are subdivided according to whether the cavity width was 50-70 mm or at least 75 mm, because with the wider range of cavities such walls are generally interpreted as meeting a deemed-to-satisfy specification. A similar subdivision is made for walls of aerated concrete blockwork. The level of performance included as a deemed-to-satisfy provision in the Regulations was achieved by all the dense blockwork walls. Rather less than half the cavity brick walls tested achieved the performance standard; the performance of these walls was apparently lower than that of plastered solid brick walls tested in the survey, although the difference is not large enough to be statistically significant. The performance of recent cavity brick walls appears to be significantly lower than that of similar walls in the period 1948 - 1956. The mean performance of lightweight aggregate and aerated concrete blockwork walls was significantly below the level required to meet the performance standard, irrespective of cavity width, and their performance was significantly lower than that for plastered solid brick walls tested in the survey. Evidence on whether increasing cavity width generally tends to improve performance is inconclusive. (Copyright (c) British Crown Copyright 1980.)
Field Measurements of the Sound Insulation of Plastered Cavity Masonry Walls
E. C. Sewell (author) / R. S. Alphey (author) / J. E. Savage (author) / S. J. Flynn (author)
1980
43 pages
Report
No indication
English