. Railroad structures and estimates . Fig. 66c. Example. —^ a6 = 4 inches, cdl = 8 inches, he = 84. 84 -=-(8 inches + 4 inches) = 7. Angle or spread of frog is 1 in 7, orNo. 7 frog. 1. /^—-. k w 1 K 1 1 L 1 *1 PROPERTIES OF FROGS. Thick ness of all frog points 0} in. (4 ft. 8J in. gage). Frog Frog angle. Length ofpoint to toe. Length of point to heel. Totallength. Spread attoe. Spread atheel. number. F. W. K. L. T. H. Deg. Min. Sec. Ft. In. Ft. In. FU In. Feet. Feet. 7 8 10 16 4 5 8 1 12 6 1. 15 8 7 09 10 4 9 8 9 13 6 9 6 21 35 6 0 10 0 16 0 10 5 43 29 6 0 10 6 16 6 0,
. Railroad structures and estimates . Fig. 66c. Example. —^ a6 = 4 inches, cdl = 8 inches, he = 84. 84 -=-(8 inches + 4 inches) = 7. Angle or spread of frog is 1 in 7, orNo. 7 frog. 1. /^—-. k w 1 K 1 1 L 1 *1 PROPERTIES OF FROGS. Thick ness of all frog points 0} in. (4 ft. 8J in. gage). Frog Frog angle. Length ofpoint to toe. Length of point to heel. Totallength. Spread attoe. Spread atheel. number. F. W. K. L. T. H. Deg. Min. Sec. Ft. In. Ft. In. FU In. Feet. Feet. 7 8 10 16 4 5 8 1 12 6 1. 15 8 7 09 10 4 9 8 9 13 6 9 6 21 35 6 0 10 0 16 0 10 5 43 29 6 0 10 6 16 6 0,60 11 5 12 18 6 0 11 6 17 6 12 4 46 19 6 5 12 1 18 6 15 3 49 06 7 8 14 10 22 6 16 3 34 47 8 0 16 0 24 0 18 3 10 56 8 10 17 8 26 6 20 2 51 51 9 8 19 4 29 0 RIGID FROGS. »oM S-^K J ^ KSI—»J 221 TT
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Keywords: ., bookcentury1900, bookdecade1910, bookidrailroadstructur00orrouof
