shower floor Home › Forums › Public Forums › Drainage & Sewerage › shower floor This topic has 1 reply, 2 voices, and was last updated 19 years, 12 months ago by Retired plbg1. Viewing 1 reply thread Author Posts 21 Nov 2004 at 2:27 pm #279450 Derek Ritchie i am pouring a concrete floor in my basement for a shower.what degree of decline should i have? 21 Nov 2004 at 11:00 pm #300896 Retired plbg1Participant You should have fall from all 4 corners. Use a level and strait edge and set it on drain and give it between a 1/8″ & 1/4″ buble on level. Art retired plbg Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In