This historic book may have numerous typos and missing text
Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 Excerpt: ...and a competent brick inspector can make his selections to much better advantage at the plant than by sampling a carload after it arrives on the work. Plant inspection and acceptance is encouraged by the manufacturers and should be insisted upon by the engineers for all work of any magnitude. Considerable space has been devoted to the rattler test, because it has taken the place of all other tests for determining the density, strength, hardness and toughness of paving brick. It has been shown in the description of the method of making brick that the defects likely to occur are of such a nature that they will be apparent on visual inspection or will show up by excessive wear in the rattler. Visual inspection will disclose the misshapen, warped, cracked, and off-size brick, that is, brick which will not lay evenly in the street, but must not be depended upon to pass on the quality of the brick material itself, especially if brick from different plants are to be selected. The rattler is best able to discover the soft, brittle or weak brick material. A specification, which limits the variation in width and depth of brick so that they may be bedded evenly and with uniform width of joint, rejects the badly chipped, broken kiln marked and warped brick which would make a rough and uneven surface, and throws out soft, brittle or weak brick by a suitable rattler test requirement, will make certain, when intelligently enforced, the receipt of a satisfactory, durable, well manufactured, lasting brick paving material. CHAPTER V LAYING THE BRICK yEjjHE PLACING OF THE BRICK to form the wearing surface refjj quires the same care and intelligent supervision that has been iJJJ, urged in the construction of the foundation and the selec3S85! tion of the brick. (Like the other ...