4907 Deflection Take one wave length as a checking unit Using transformed section: 305 4207 165 上20,93 140 Fig.3 Transformed section Equivalent width of concrete slab 305=42.07mm E Equivalent width of rib: (140+165)/2-0.76 =20.93mm CE Deflection Take one wave length as a checking unit Using transformed section: Equivalent width of concrete slab : 305 42.07 E mm   Equivalent width of rib: (140 165) / 2 0.76 20.93 E mm     Fig. 3 Transformed section