TinnerFlow™1st YearHangers & SupportsYELLOW · Check First
Use the 3-4-5 rule to establish a right angle. Measure 3 feet along the I-beam edge, 4 feet out perpendicular from it, and adjust your angle until the diagonal distance between those two points measures exactly 5 feet.
Use the 3-4-5 rule to establish a right angle. Measure 3 feet along the I-beam edge, 4 feet out perpendicular from it, and adjust your angle until the diagonal distance between those two points measures exactly 5 feet.
Use this as training guidance. The foreman, approved drawings, project specs, manufacturer installation instructions, employer safety policy, and AHJ/code requirements always control the final answer.