Reinforced concrete walls during fire, Investigation of the out-of-plane flexural capacity

William Hayhoe, Maged A. Youssef, Salah El-Fitiany


Current building codes address the design of concrete walls for fire by specifying minimum thicknesses and concrete covers based on required fire ratings. As building codes move towards performance-based design for fire, it is important to provide engineers with tools to design concrete walls to resist fire. The out-of-plane flexural capacity of a wall is critical to resist loads associated with the hose stream during fire-fighting efforts, wind loads, and movements perpendicular to the wall longitudinal axis. In this paper, a parametric study is conducted to evaluate the effect of different parameters on the out-of-plane flexural capacity. A simplified sectional analysis method is utilized to sketch the moment-curvature diagrams of different walls. Results are examined to assess the effect of each of the considered parameters on the wall out-of-plane performance and capacity.

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