This section is from "The Encyclopaedia Britannica". Also available from Amazon: Great Books of the Western World (60 Volumes).
The following figures indicate the crushing load for bricks of various types in tons per sq. in.: -
Common hand-made | from | 0.4 | to | 0.9 |
" machine-made | " | 0.9 | " | 1.2 |
London stock | " | 0.7 | " | 1.3 |
Staffordshire blue | " | 2.8 | " | 3.3 |
Sand-lime | " | 2.9 | " | 3.4 |
See also Brickwork.
(J. B.*; W. B.*)
[1] The term "marl" has been wrongly applied to many fire-clays. It should be restricted to natural mixtures of clay and chalk such as those of the Paris and London basins.
 
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