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Mr. HAMANN, when introducing the paper, took the opportunity to express his gratitude to Mr. Robert Campbell, B.Sc.(Eng.), A.M.Inst.C.E., consulting engineer, of New Zealand, to whom he owed the knowledge he had gained of earthquake effects. Mr. Campbell was formerly Professor of Civil Engineering at Canterbury (N.Z.) University College, and was a member of the New Zealand Building Regulations Committee, which had issued a report in June, 1931, only four months after the disastrous earthquake which had occurred in New Zealand that year. The committee had been re-assembled, and Mr. Campbell was one of its two technical officers, Mr. Hamann added that he had gained knowledge of the subject during the period in which he had assisted Mr. Campbell.
Sir,-It has long been known that the modulus of elasticity in compression of concrete increases with the quality of the concrete and this has been recognised in the New Code.
MR. REYNOLDS said that in presenting these observations of the New Code of Practice for Reinforced Concrete, his sole interest in the subject was the very personal one of attempting to interpret as a practising engineer the Code's recommendations.