Title:
Determination of Slab Thickness in Suspended Post-Tensioned Floor Systems
Author(s):
R. I. Gilbert
Publication:
Structural Journal
Volume:
86
Issue:
5
Appears on pages(s):
602-607
Keywords:
building codes; concrete slabs; deflection; flat concrete slabs; post-tensioning; prestressed concrete; serviceability; span-depth ratio; structural design; thickness; two-way slabs; Design
DOI:
10.14359/3292
Date:
9/1/1989
Abstract:
A simple expression is presented for the maximum span-to-depth ratio of post-tensioned concrete floor systems. The expression provides an initial estimate of the minimum slab thickness required to limit deflection to some preselected value and forms the basis of a design approach for serviceability. The procedure is an extension of the deemed-to-comply span-to-depth ratios for reinforced concrete slabs that form part of the deflection control provisions in the new Australian Standard for Concrete Structures, AS3600-1988. The procedure described in the paper is illustrated by several numerical examples.