USE NSCP $2015$

Problem $3$: A $300$ mm wide rectangular beam has an effective depth $d=460mm.$ The beam will be design to carry a service dead load of $230$ kN $-$

m and a service live load of $190kN-m.$ Compression reinforcement if necessary will have its centroid $70$ mm from the extreme concrete fiber.

Determine the required steel area. Use $fy=415$MPa and $f^{\text{'}}c=30$MPa.