Civil Engineering PE

Answer: D - The order of the steps typically undertaken in the iterative process of designing a singly reinforced concrete beam is as follows:

• Analyze the beam loading
• Specify an assumed concrete compression strength and steel reinforcement tensile strength
• Determine dimensions of beam cross-sections
• Calculate areas of steel required, select steel dimension, and calculate compression block area
• Calculate nominal moment strength and verify it is greater than the ultimate moment strength
• Repeat steps if needed (increase concrete strength, steel tensile strength and/or beam cross-sectional area)

The design of a singly reinforced concrete beam is based on ensuring the required strength of the beam (ultimate moment strength) is exceeded by the nominal moment strength multiplied by a strength reduction (safety) factor.