Im getting ready to put some plumbing (drain) down for the house before more backfill and then slab is poured. I guess Im suppose to have around .25" drop per foot. Well I have almost 60' from start to septic and the current grade is roughly .40" to .45" per foot. Why would this not be acceptable ? Im asking because the ground below in the house is very hard chert. We currently have a septic system we have been living on now for about 9 years and the drop in it is somewhere between 5 to 10 feet difference for about the same 60 foot length and we have never had any problems. So if I didnt measure right and my fall for the new house septic drain was close to 1/2" drop per foot then would it still work just fine ?
Thanks
Thanks