the ex-posed surfaces depends upon the care with which the spading is done.The mixture must be quite plastic, as a dry mixture would have notendency to flow. Concrete in the abutments should be deposited incontinuous horizontal layers, thus avoiding anv vertical joints. In thefloor slab, the… … fXlVKHSAL IOUT LAND CKMKXT CO. 17 section without interruption. This will make it necessary to providefor vertical joints at both ends of the section. So that the sections of theabutment will be keyed into each other, a groove should be formed inone end of each section. This groove can be made by…
Bridges · Concrete · Culverts
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