Miters are allowed in piping systems with design pressure greater than 50 psig.

Miters are allowed in piping systems with design pressure greater than 50 psig.

• A. True
• B. False
• C. Sometimes
• D. Never

Answer: (B)

Miters rely on cutting pipe ends at angles and welding them together to form a bend. This creates sharp corners and can thin the wall near the weld, which concentrates stress. When piping is designed to withstand higher pressures, those stress concentrations become failure points, increasing the risk of cracks and leaks under pressure and temperature cycling. Codes require bends to be made with fittings designed for pressure, such as long-radius elbows or formed bends with specified radii, to ensure a smooth, strong curve and uniform wall thickness. Because of that, a mitered bend is not permitted in piping systems with design pressure above 50 psig.

Miters rely on cutting pipe ends at angles and welding them together to form a bend. This creates sharp corners and can thin the wall near the weld, which concentrates stress. When piping is designed to withstand higher pressures, those stress concentrations become failure points, increasing the risk of cracks and leaks under pressure and temperature cycling. Codes require bends to be made with fittings designed for pressure, such as long-radius elbows or formed bends with specified radii, to ensure a smooth, strong curve and uniform wall thickness. Because of that, a mitered bend is not permitted in piping systems with design pressure above 50 psig.