Chicago : Engineering and Contracting Pub. Co. · leaf 408
en, a further elevation became necessaryo connect these tracks with the new terminalracks, where 14 ft. of headroom was givenvithout depression. The old retaining walls were built of rubbleimestone on a natural cement concrete base. wider at one end than at the other, the nar-row end was made the… … body of the wall, and to prevent rupturethrough the tail, due to the downward pres-sure upon it and the outward pressure on theupper part of the wall, %-in. reinforcing barsspaced 12 ins. apart were placed horizontallywithin about G ins. of the upper face of thetail. These bars were bent down at…
Buildings
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