Plumbing layout for 1st storey plan; Toilet blow up (PT3 &PT4) at 1st storey; Toilet blow up (PT3 &PT4) at 1st storey (drainage); Toilet blow up (PT3 &PT4) at 1st storey (water supply); Sections (CT2 & CT3 & UT2)-at level 1st; Sections (PT3 & PT4)-at level 1st; Toilet blow up (CT2 &CT 3 & UT2) at 1st storey; Toilet blow up (CT2 & CT3& UT2) at 1st storey plan