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Z M <br /> 2 2 6 2 3 4 56 7 8 y ,� / .. <br /> 9 % DIRECTIONS FOR USE OF TABLES � ►w ' <br /> O7. '/ <br /> TABLE No. 1. GJ <br /> Distance of slope stake from side or shoulder " <br /> stake for any width roadway, slope 1 I2 to 1. ( � L 7 TABLE II <br /> TRIGONOMETRIC FORaeyr Y, <br /> If ground is nearly level, the cut or fill at side 7txOP ZB! pox= topL <br /> stake U' located by the double entry method in R—OB—o— i , <br /> left coke nn and top row. The number in body min A= `=a m Lp �. <br /> oos B= <br /> of table in same row and column gives distance b b <br /> from side stake to slope stake. If ground is not oo. c— —b=.in B=OL <br /> level estimate the difference in elevation between 3 ten A—b= ON — Q ,.MQ sot B:MQ <br /> the side stake and 4ope stake,lower target by this <br /> NT NT <br /> amount if cut, elevate if fill. Add this amount eot A= ON—i=DTT=tan B=NT <br /> to cut or fill and find distance in table. Set up OQ OQ G <br /> rod at this point, and line of sight should cut '°°A ot[ —i— _°'°B= <br /> target. If it does not make the slight adjustment ew A=T= OT —OT=we B=oT 1 <br /> necessary. LM 9 L/4�d� <br /> vera A—OF=LM—covers B# —3 <br /> TABLE No. 9 r scum A= OP—LP —Op—LP=vers B 7?, Z <br /> To find Tangent and External for curve.of OP <br /> any other degree, divide by degree of curve and sommA pPQ r—B <br /> add correction found in column of corrections. i—C=A <br /> 2 G <br /> A=� <br /> Degree of curve with a given I may be found A= 2 <br /> Wn cos <br /> by dividing tangent, (or external), opposite I by do 2A—2 sin A oos A oos 2 A—ooe'A—din'A <br /> given tangent, (or external). Lw at Lines min A An B min 0 <br /> a = B — C <br /> The distance from a point on the tangent to Lw at Qoidaes e=a'+b•—2 ab eoe Ca+b tan M(A+B) <br /> the curve is very nearly the square of the tangent Lw of Tansents ,rb —fan (A—B) <br /> lenth divided by twice the radius. <br /> I <br />