. Railroad structures and estimates . 82 |8^) 295J2 r 32- 13lOj/ 00- V 33 ^Il4.« r 33- H2 \ 0J)193 34 UJSl SgUS r 3i hW 70. A OA-«W *70 85 ;>j UM SSgJS 1 * hj* \ 0JH07 12J5378 as 871 j 36 15W 75- \ 0J515 37 881 1 « \ 0J5622 38 80 i5.« r ^ 157K W \ O^iTSI 30 40 1 f -•■■ lin \ 05841 I«79»3 40 40 5 1 36 QUANTITIES IN REINFORCED RETAINING WALLS. TABLE 25. —REINFORCED RETAINING WALLS. Earth assumed to weigh 100 lb. per cu. ft.; concrete, 150 lb. Live load, 135 lb. per sq. ft. without impact.
. Railroad structures and estimates . 82 |8^) 295J2 r 32- 13lOj/ 00- V 33 ^Il4.« r 33- H2 \ 0J)193 34 UJSl SgUS r 3i hW 70. A OA-«W *70 85 ;>j UM SSgJS 1 * hj* \ 0JH07 12J5378 as 871 j 36 15W 75- \ 0J515 37 881 1 « \ 0J5622 38 80 i5.« r ^ 157K W \ O^iTSI 30 40 1 f -•■■ lin \ 05841 I«79»3 40 40 5 1 36 QUANTITIES IN REINFORCED RETAINING WALLS. TABLE 25. —REINFORCED RETAINING WALLS. Earth assumed to weigh 100 lb. per cu. ft.; concrete, 150 lb. Live load, 135 lb. per sq. ft. without impact. , ,„ „ • i Unit stresses: concrete (1-2-4), 600 lb. per sq. in. compression shear, oO lb. per sq. m.; steel(square twisted bars or equivalcat deformed section), 16,000 lb. per sq. in. On clay foundation wall to be anchored against sliding. 3 in. weep pipes to be provided at distances not greater than 5 ft. apart. At least 18 in. of broken stone backing to be provided to facilitate drainage. Concrete in Cu. cn £. * 33 S- cliorasje agl^ost slidinc^H + e ! ^ _. L :__ * ^-t-m- - - 1 t::w-\t---- \:A G-SA-- : ]X-- :. _ 2-- t^\ V ^ ^ -[ s <2 1- ^ M \ M 1 T k s. ** . ir M s to , N te T :::::::::::^.: Steel in i i Pounds I do ,1 added for splices) Height in 8 12 16 20 24 Toe slab Y sq. bars: 1 sq. bars: 1 sq. bars: i sq. bars: } sq. bars: 2 6 Ig., 36lg., 5 0 5 6 12 crs. 12 crs. 10 era. 12 crs. 6 crs. Heel slab Jsq. bars: 1 sq. bars: J sq. bars: J sq. bars: } sq. bars: 3 6 Ig., 4 9 6 0 7 0 Ig., 8 0 12 era. 12 crs. 12 crs. 10 crs. 5 crs. Vert, wall reinfment. i8q. bars: i sq. bars: 1 sq. bars: rsq. bars: rsq. bars: 9 0 130lg., 170lg., 25 0 Ig., 12 crs. 10 crs. 10 crs. 10 crs. l9q. bars: 70lg., 10 crs. 10 bars: 10 crs. A r 2 r 9 2 4 2 U 35 B 1 4 r 6 r 8 1 10 2 0 C r 4 r 6 r 91 2- 5} 3 Hi D 2 3 3 2 4 1 4 UJ 5 10 E 4 9 6 5 8 2J 10 4 12 4J Lb. st«el p
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