What is the correct format, in SI units, for stationing 200' from the start of an alignment?0+200200+0O 20+02+00 Below is the image of a typical construction stake. What word does the "O/S" represent?2+75 4'0/S B/C F-0.69'

“Since you have asked multiple questions, we will solve the first question for you. If you want any specific question to be solved, then please specify the question number or post only that question.” To determine the correct format for stationing 200' from the start of an alignment. Usually, the distances in curves, to simply the stationing of a point. Points are represented as how many full lengths plus the length (less than the full length) have been covered a to reach the point. When we measure a survey line, for longer distances it is a little bit complicated to represent the entire value of the length measured. So, in order to simplify things a new approach is adopted, which represents the number of complete chain lengths plus the length (less than the complete chain length) to reach particular points. We have a chain of 100 ft, thus the total distance in multiple of 100 ft is considered as 1 station, and the remaining distance which is less than 100 ft is represented as plus the remaining distance. Here, we have 200 ft Therefore, 200 can be represented as 2 x 100 + 00 or 2+00 Thus, the station 200 ft can be represented as 2 + 00