Publisher's Synopsis
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1910 edition. Excerpt: ... such a clay is open to suspicion until careful resampling and testing shows whether it is due to careless sorting or to manufacture. The best brick vary from 15 to 30 per cent In the tests, while Inferior brick exceed 50 per cent, and this range is a very valuable check on the care in making the brick, and on the sorting in loading. To illustrate the variations that usually occur in paving brick, the following table gives results obtained by the Civil Engineering Department of the University of Illinois from samples selected from twenty-four paving brick plants in Illinois, Indiana, Ohio, Missouri and Kansas by the Illinois Geological Survey: For fuller information as to the details of the above tests and variations in the samples, see pages 80 to 130, Volume 9, Illinois Geological Survey, Urbana, 100., 0908. USES OF VITRIFIED BRICK. In addition to having outdistanced its rivals as the most popular material for a good street pavement, vitrified brick is also very extensively used for sewers, buildings, sidewalks, foundations and chemical purposes. SEWERS.--On account of its exceptional hardness, vitrified brick is so greatly superior to common brick for sewer Uses of construction that it has very largely replaced it, at least for Vitrified facing the sewer. Its low porosity and high strength also add additional merit for this rapidly growing use of vitrified brick. The severe scouring action of the sand that is swept through the sewers by storm waters, which is so destructive when common brick is used (especially where the grades are considerable, as in hilly cities) scarcely affects vitrified brick and very greatly prolongs the life of the lining of the sewer, if it does not entirely remove the need of relining. When our cities are...
