[header] How to build a dog agility jump [title] Mark your measurements. [step] Depending on where you bought the pvc pipe, you will need to measure and mark the pipe before you cut it. Most 1½-inch pvc pipe comes in in 5-foot (1.52 m) lengths. 
With a tape measure and sharpie, measure and then mark the cuts that you need to make on your pvc pipe. For your convenience, you might also ask the sales associate if they would cut the pipe to your specifications.