I am installing a new vanity in my basement. I am using 1 1/2 pvc pipe and the run is less than 5 ft. I need to put either 2 - 90 degree turns or 4 - 45 degree turns to tie into the existing drain in the concrete floor. I have vented this run with 2 in pvc. My question is, is there a limit to the number of 90 or 45 degree turns I am allowed to install in this run? Or is my only concern possible blockage down the road with the 90 degree turns? Thanks in advance for your help.