Question:Before new rules were issued in British Columbia, it was common practice in my area to design a distribution network with the laterals facing down. We would build the system with the orifices facing up, and after the pressure test, rotate the laterals 180 degrees and cover with more rock.I always liked this method. There is no need for extra drain holes because it is obviously free draining, you save some money and installation time on installing shields, and — this is my observation only — the distribution is better, because the effluent hits the nearest drain rock and is
