ACI 307-98 and CICIND 2001. Comparison of in-line wind loads and reinforcement
Bierrum N. R.
CICIND REPORT Vol. 17, No. 2, 2001
Order No: CR-219
In 1995 CICIND published a paper which compared
alternative designs for ten concrete chimney shells complying with the then
current standards ACI 307-88 and CICIND 1984. The principal conclusion was that
the material law for concrete in the CICIND code was far too conservative.
Subsequently the CICIND concrete chimney committee was charged with the
preparation of a revision which was published as a second edition of the code in
1998. Further work on crack width and seismic design has since given rise
to new proposals, which the committee plans to incorporate in a loose-leaf
edition to be published later this year. Meanwhile the ACI committee has also
been busy, publishing revisions in 1995 and 1998. Evidently it is time for
a new comparison. This study concentrates on two aspects, namely the
inline wind load factors and the circumferential reinforcement requirements.