POST TENSIONED FLOORS AS AN ECONOMIC ALTERNATIVE IN THE EGYPTIAN MARKET (CASE STUDY)

Gouda Mohamed, Tharwat Sakr, Ghada Mohamed

Abstract


Post tensioned "PT "floors are one of the most widely used systems for building construction all over
the world. Such systems have too many behavior, construction and economic benefits over other systems
used for relativitely long span floor system . In Egypt, the use of PT systems still has market and economic
constraints related to practice and leading to very limited use of such superior system. This paper aims at
investigating in-depth the different merits of PT systems considering behavior, design, construction and
economic issues. In addition a numerical study for comparison of the costs with the RC flat slab construction
which is the most commonly used system in the Egyptian market. Economic span of PT systems and
the saving in concrete, rebar costs as balanced to the additional PT strands, ducts and accessoriness's are
investigated. Results indicated the advantages of using PT floor systems especially for relatively large
spans and multistory construction where time plays an important role. Spans more than 8.3 meters, PT systems
proved to be more economic according to the Egyptitian market practice. This economic span becomes
slightly less in case of more live loads.

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