SURVEYS. 



extra right of way necessary for stations, side tracks, "Ys," 

 borrow pits, etc., on the line of the road. 



Profiles, when completed, shall contain all the information 

 called for on the sample copy furnished from the office of 

 Chief Engineer, and arranged in the manner shown thereon. 

 The original profiles must be made on the regular profile 

 paper. Tracings must be made in sections of 20 miles from 

 the original profile, and sent to the office of Division Engi- 

 neer, from which the necessary blue-prints will be made for 

 contractors. Intersecting grades are to be connected by verti- 

 cal curves having a rate of change of grade per station of 0.05 

 ft, except on summit curves where the rate of change may be 

 0.1 ft or more per station. 



Profiles should show alinement drawn in red near the bot- 

 tom of the paper. The direction of the curve is shown by 

 drawing the radial lines to an intersection on their proper 

 side, at the middle of the curve. 



Progress profiles will be sent each month to the Chief En- 

 gineer's office, properly colored to show all work done to and 

 included in the last estimate, on the part of the road in 

 charge of the engineer. These profiles must. show all work 

 done during the preceding month; not only grading, but de- 

 tails of bridges and culverts built, with their exact location; 

 description and location of all buildings, or structures of any 

 kind, wells dug, main track, sidings, or "Ys" laid, etc. The 

 depth that piles are driven below the surface of the ground 

 should be indicated by dotted lines, showing the point of low- 

 est pile in bent; the mud sills of trestles should be shown by 

 a short heavy line, and on steep side hills the elevation of each 

 mud sill should be indicated in the same way. Prints from 

 "Solar" negatives of tracing profiles in the Chief Engineer's 

 office will be furnished for progress profiles. The completed 

 profiles will be retained in the office of the Division Engineer 

 at the close of the work. 



The standard progress colors are as follows: 



January Chrome yellow. July Sepia 



February Carmine. August Emerald green. 



March Payne's gray. September Cobalt blue. 



April Deep chrome. October Vermillion 



May Prussian blue. November Indian red 



Burnt Sienna. December Sap grcea' 



