1. A short-reinforced cement concrete column 600 mm x 450 mm, 3m long loaded 1250 kN...

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1. A short-reinforced cement concrete column 600 mm x 450 mm, 3m long loaded 1250 kN (Fig. 1). The column reinforcement with total eight numbers of steel rods of (4nos of 25mm +4nos of 20mm diameter). Find the stresses in steel and concrete, and the elastic shortening of the column if E =200,000 N/mm for steel and 10,000 N/mm2 for concrete. 600 4-26 + (at comers) (clear cover to ties 40 mm) 4-20 4 (at middie of each face) 450 -86 TIES @ 300 cic (staggered) Fig. 1 1. A short-reinforced cement concrete column 600 mm x 450 mm, 3m long loaded 1250 kN (Fig. 1). The column reinforcement with total eight numbers of steel rods of (4nos of 25mm +4nos of 20mm diameter). Find the stresses in steel and concrete, and the elastic shortening of the column if E =200,000 N/mm for steel and 10,000 N/mm2 for concrete. 600 4-26 + (at comers) (clear cover to ties 40 mm) 4-20 4 (at middie of each face) 450 -86 TIES @ 300 cic (staggered) Fig. 1