its amazing how many TPR pipes i see that are improper. i pretty much have been writing up anything that isnt copper (rigid). i have also seen a few that are labeled “TPR Pipe” but are just flimsey, flexible, thin plastic.
the IRC and UPC are different and sometimes i get caught in between. ie, IRC states pipe has to teminate within 6" to floor, IRC is 6"-24". IRC says it can drain into a pan and UPC cannot, etc… without determining what code is for each community, how do you all determine what you use for refernce?