For a given rectangular concrete beam, according to Eurocode 1992-1-1:
- Derive the procedure of determining the required reinforcement. A concrete rectangular cross-section, 300×500, is made of C30/37 and reinforced by B500 steel. Assume the stirrup is T10 and the required nominal cover is 35mm:
- If the available reinforcement is T20, how many reinforcements are required to withstand 250𝑘𝑁.𝑚 bending moment?
- Determine the stress in reinforcements based on your design.
PS. Neglect the effect of compressive steel.
Dimensions are in mm. The cross-section is under a positive bending moment. The sketch is schematic and does not necessarily means that 4T20 is sufficient.
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