Design codes specify minimum flexural reinforcement for reinforced concrete
beams. With the extensive use of higher strength concrete, the empirical e
xpressions of the past for minimum flexural reinforcement, in which the con
crete strength is not considered, had to be revised. Six reinforced concret
e T-beams, having small ratios of flexural reinforcement, were tested to st
udy the behaviour at the positive moment region and to evaluate the code re
quirements on minimum flexural reinforcement. A criterion was set and evalu
ations of different minimum reinforcement requirements were made using this
criterion and the test data.