Design of a reinforced-concrete highway bridge . he built at right angles to the sides but they should consist of two planes built at an angle of about for fey five degreeswith the sides, meeting in a line, the purpose of which is to cutthe water and avoid scour. The sides and ends should be built on abatter of preferably one inch in one foot; and the footings shouldextend sufficiently beyond the walls to distribute the load so thatthe pressures on the soil will not be excessive. The bottom of thefooting will be placed at an elevation of ; and since the girderis five feet deep the elevatio
Design of a reinforced-concrete highway bridge . he built at right angles to the sides but they should consist of two planes built at an angle of about for fey five degreeswith the sides, meeting in a line, the purpose of which is to cutthe water and avoid scour. The sides and ends should be built on abatter of preferably one inch in one foot; and the footings shouldextend sufficiently beyond the walls to distribute the load so thatthe pressures on the soil will not be excessive. The bottom of thefooting will be placed at an elevation of ; and since the girderis five feet deep the elevation of the top of the footing is footing must at least be 4 wide on top and 12 long not includ-ing the ends. If the sides are built on a 1:12 batter, the dimen-sions will be 4,150 lbs. The maximum moment in the footings - 1/3 V l2 - 4150 x 9 x 9 x 12 8 : 505,000d is again 56, and since b is 12 8 = 12 x 56 x 36 - If f s is 16,000, then fc . - 300 and p - %% and the area ofthe steel is As = P b d - x 12 x 36r °. I a bass- 7 -C- C /<3
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttheses, bookyear1913
