Running measurements are one of the most common calculations on construction and building sites. They are also one of the simplest to measure and calculate. Before you can start the calculation, you will need three numbers. The start, which is often 0 (zero), the measurement interval, and the total number of intervals that you are needing to calculate. We start by adding the measurement interval to the start measurement, and continue until the measurement interval has been added the desired number of times. If you are simply wanting to get the total length of the running measurement we would multiply the measurement interval by the number of intervals, and then add the answer from this step to the start measurement to get the overall length.