What is the distance from Sta. 3+12.75 to Sta. 3+15.50?

To determine the distance between the two station points, you can subtract the station value of the first point from that of the second.

In this case, you start with the first station point, which is 3+12.75. This means it is at 3 feet plus 12.75 feet, or a total of 15.75 feet from the reference point.

The second station point is 3+15.50, which translates to 3 feet plus 15.50 feet, totaling 18.50 feet from the reference point.

To find the distance between these two stations, you simply subtract the total of the first station from the total of the second station:

18.50 feet (second station) - 15.75 feet (first station) = 2.75 feet.

Thus, the correct distance from Sta. 3+12.75 to Sta. 3+15.50 is indeed 2.75 feet. This shows that a clear understanding of how to interpret station numbers and how to calculate the distance between them is essential in highway construction inspection.