1. Journal Articles
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Item Test performance of a ten tonnes reinforced concrete loading frame(1974) Raju, H.K.; Basavarajaiah, B.S.The paper reports an experimental investigation on a reinforced concrete loading frame of ten tonnes working load capacity. The loading frame was fabricated by using two doubly reinforced concrete beams to serve as flexural members. Eight numbers of mild steel rods connected to the beams by plates and nuts served as supports for the beams and also as tension members during testing of structural elements. The stress distribution and loadeflexion characteristics of the flexural members of the frame was investigated in the working load range of to tonnes. Theoretical and experimental observations indicated that the flexural member behaves like a beam with partial fixity at the ends. 1974 Secr tariat de R daction.Item Flexural behaviour of pretensioned concrete beams with limited prestress(1973) Krishna, Raju, N.; Basavarajaiah, B.S.; Ahamed, Kutty, U.C.The behaviour of class-3 type prestressed concrete beams, at the limit states of cracking, deflexion and collapse are investigated by experiments on pretensioned beams with mild steel as supplementary reinforcement. Several methods of calculating the width of cracks are examined in the light of experimental results and an empirical formula, which includes the effect of percentage of untensioned reinforcement is suggested. The deflexions of beams, based on the method of Beeby and Taylor, were marginally conservative when compared with the experimental results. The ultimate moment capacity of concrete sections with tensioned and untensioned reinforcement, was underestimated by as much as 10, 15 and 25 per cent by the Indian, British and American Code recommendations. 1973.