is practicable, by joggling the courses together withbed-dowel joggles, so as to render the whole abutmentone solid mass. 80. Wing Walls.—Where the wing walls of a bridge arebuilt as shown in fig. 26, the pressure of the earth willalways have a tendency to fracture them at their junction 334… … with the abutments, as shown by the lines a b, c d. Equalstrength with the same amount of material will be obtainedby building a number of thin longitudinal and cross walls, asshown in fig. 27, by which means, the earth being kept from Fig. 27. IfeEsES
Architecture · Building
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