307-98 / 307R-98: Design and Construction of Reinforced Concrete Chimneys and Commentary


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Title: 307-98 / 307R-98: Design and Construction of Reinforced Concrete Chimneys and Commentary


Publication: Technical Documents



Appears on pages(s): 30

Keywords: chimneys

Date: 11/1/1998


Note: A newer version of this document exists. This document was replaced by 307-08.

The standard gives material, construction, and design requirements for circular cast-in-place reinforced concrete chimneys. It sets forth minimum loadings for the design of reinforced concrete chimneys and contains methods for determining the concrete and reinforcement required as a result of these loadings. The method of analysis applies primarily to chimney shells, however, a general proceudre for analysis of noncircular shape is included. This standard is written in explicit, mandatory language, and as such, is intended for reference in project specifications. Equations are provided for determining the temperature gradient through the concrete resulting from the difference in temperature of the gases inside the chimney and the surrounding atmosphere. Methods for combining the effects of dead and wind (or earthquake) loads with temperature both vertically and circumferentially are included in the standard. These methods permit the designer to establish minimum concrete and reinforcement requirements. This standard refers extensively to "Building Code Requirements for Structural Concrete" (ACI 318); construction requirements are generally in accordance with 318; and notation is in accordance with ACI 304.