Post Tensioned Concrete Floors Design Handbook




I INTRODUCTION

1.1 BACKGROUND

The use of post-tensioned concrete floors in buildings has

been growing consistently in recent years. The greatest use

of this type of construction has been in the USA, and in Cali-

fornia it is the primary choice for concrete floors. Post-

tensioned floors have also been used in Australia, Hong

Kong, Singapore and Europe. Their use in the UK is now

increasing rapidly.



Typical applications have been:

Offices

Car parks

Shopping centres

Hospitals

Apartment buildings

Industrial buildings

Transfer beams

Water-resistant roofs

These are illustrated in Figures 1—3.



The Concrete Society has published various Technical

Reports on the design of post-tensioned floors('3. Technical

Report 43, Post-tensioned concrete floors —

Design

boo/c4, which was published in 1994, combined the earlier

reports and expanded some of the recommendations in line

with current practice and the requirements of BS 811

Another important reference is the BCA report on Post-

tensionedfloor construction in inulti-storey buildings(6). The Hand-

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