Ciputra World, Surabaya Waterproofing Project Ciputra World, Surabaya Gn. Sari, Kec. Dukuhpakis, Surabaya, Jawa Timur Completion Date Product Volume 2011 HPI System 2,500 m3 Area Completed : Roof of Ciputra World Mall Architect In House Engineer David Langdon Contractor PT. Tatamulia Nusantara Indah Developer/Owner PT. Ciputra Group