The following requirements apply to ABS plastic pipe and fittings:ABS shall not be used for drains, waste, or vents in the commercial kitchens, laundry rooms, public restrooms or other commercial areas located in assisted living facilities, hotels, motels, inns and similar establishments except where provided for elsewhere in 248 CMR 10.06, i.e. 248 CMR 10.06(2)(p).ABS - DWV (Acrylonitrile - Butad