Highway bridges and culverts . if! N3 Mil i«ij Hit i*u :**4 * *ill I-: rf9 — II lilt 4^1 tlgfe I illtil Hit Hit 1 ll f~» txM—r,o~ Bui. 43, Office of Public Roads, U. S. Dept. of Agriculture. Plate I REINFORCED CONCRETE ARCHES—FOOTINGS. 17 The difference in the cost between an arch culvert for this spanand that for a box culvert of the same span is not a matter of muchimportance. The advantage, if there is any, of the arch over thebox type occurs very probably from the fact that no steel reinforce-ment is required for this arch as designed in the accompanyingdrawing. REINFORCED CONCRETE AR
Highway bridges and culverts . if! N3 Mil i«ij Hit i*u :**4 * *ill I-: rf9 — II lilt 4^1 tlgfe I illtil Hit Hit 1 ll f~» txM—r,o~ Bui. 43, Office of Public Roads, U. S. Dept. of Agriculture. Plate I REINFORCED CONCRETE ARCHES—FOOTINGS. 17 The difference in the cost between an arch culvert for this spanand that for a box culvert of the same span is not a matter of muchimportance. The advantage, if there is any, of the arch over thebox type occurs very probably from the fact that no steel reinforce-ment is required for this arch as designed in the accompanyingdrawing. REINFORCED CONCRETE ARCHES. The reinforced concrete arch has an advantage over the plain con-crete arch in the fact that the curve of the reinforced structure maybe made more nearly flat than the plain concrete arch, and therebysave in the total height of the structure. This permits it to be usedwhere it otherwise could not be. Under favorable conditions theremay be an additional advantage in point of economy, although thiscan not be stated generally as true in all cases. The steel reinforcement in the arch serves the same purpose as inthe concrete slab—that is, to increase the strength of the arch ribwhere the
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Keywords: ., bookauthorhoytchar, bookcentury1900, bookdecade1910, bookyear1912
