i have a question about the take off on pipes. if i am correct i think the take offs are 1.5 for a 90 and 1 time the diameter for a 45. if this is correct i would like to know what does this mean does it mean that i take 1.5 time the diameter of the pipe off of the pipe for a 90
ex. 10 foot 6 inch pipe install a 90 degree ellbow it becomes a 9 foot three inch pipe before the elbow
also are there any other take offs i should know about????