A simply supported reinforced concrete slab is subjected to fire as shown in Figure 1. The compression zone is not expos

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A Simply Supported Reinforced Concrete Slab Is Subjected To Fire As Shown In Figure 1 The Compression Zone Is Not Expos 1 (41.9 KiB) Viewed 137 times

A simply supported reinforced concrete slab is subjected to fire as shown in Figure 1. The compression zone is not exposed to elevated temperatures, therefore the strength under fire conditions is solely a function of the temperature of the reinforcing steel. Determine the flexural capacity after 60 minutes exposure to standard fire requirements. Given: Span of slab 1=6.50 m Slab thickness h=200 mm Concrete density p=24 kN/m Characteristic strength of concrete fer=30 MPa Yield stress fyx=410 MPa Diameter of reinforcement Db=16 mm Concrete Cover Cy=15 mm Permanent Load G1=0.5kN/m (Excluding self-weight) Variable load Q=2.5kN/m Bar spacing s=125 mm mon Fire Figure 1: Simply supported reinforced concrete slab exposed to fire