What's the formula to find the circumference of a spiral pipe when cutting a saddle tap?

Circumference=πxd Multiply the absolute diameter (d) of your round pipe by π (approx. 3.1416). For example, a 10-inch round spiral pipe has a total outer perimeter circumference measurement of exactly 31.42 inches around. Knowing this tells you exactly how far around the pipe wall your custom saddle layout lines need to extend.

['Circumference=πxd Multiply the absolute diameter (d) of your round pipe by π (approx. 3.1416). For example, a 10-inch round spiral pipe has a total outer perimeter circumference measurement of exactly 31.42 inches around. Knowing this tells you exactly how far around the pipe wall your custom saddle layout lines need to extend.']

Stop if

• 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.

Steps

• Circumference=πxd Multiply the absolute diameter (d) of your round pipe by π (approx. 3.1416). For example, a 10-inch round spiral pipe has a total outer perimeter circumference...

More in Measuring, Field Verification & Layout Marks