ABSTRACT
Radical Concrete Technology. Edited by R K Dhir and P C Hewlett. Published in 1996 by E & FN Spon, 2-6 Boundary Row, London SE1 8HN, UK. ISBN 0 419 21480 1. ABSTRACT. Multi-level formworking is common practice in the concrete high rise construction industry whereby a limited number of formwork and shoring sets are cycled up the structure. This process allows freshly cast slabs to be supported on a number of lower level slabs rather than the building foundation. The primary purpose of this paper is to examine the effects of multi-level formworking for post-tensioned slabs with an emphasis on improving the safety and speed of the construction cycle. This paper demonstrates that post-tensioning is not necessarily as conservative as commonly believed but that it does enhance the safety during the multi-level formworking operation. Keywords: Backpropping, Concrete Building Construction, Formwork, Multi-level Formwork, Post-tensioning, Reshoring, Shoring. Mr Stephen L.Kajewski is the Post Graduate Course Coordinator for the School of Construction Management, Queensland University of Technology. His research interests include multi-level formworking processes; post-tensioned and prestressed concrete; and project management techniques in construction. Dr Gerald Brameld is an Associate Professor in the School of Civil Engineering and is the Director of the Physical Infrastructure Centre Research Concentration. Dr David Thambiratnam is an Associate Professor in the School of Civil Engineering. Dr Keith Hampson is the Director of Research for the School of Construction Management.
