Design and Construction of Explosives Factories

M R . L. SCOTT WHITE, M.Inst.C.E., M.I.Struct.E., in proposing a vote of thanks, said that Mr. Sparkes had delivered a very technical lecture in a most interesting way. Road construction had made very rapid progress during the last thirty or forty years., in which the use of concrete had largely figured. Mr. Sparkes still found, after making many experiments in conjunction with his colleagues, that no final recommendations could be made on the subject, and it appeared that final conclusions were still a long way off. Meanwhile he had given much useful information which helped considerably in the study of the subject.

PART I. REPEATED STRESSES ON STEEL STRUCTURES. The design of structures of steel and reinforced concrete can roughly be divided into three classes: (1) in which the dead loads and thus the stresses in the structures are large as compared with any moving loads that may come on to the structures; (2) structures in which the stresses due to moving loads may be large as compared with those due to the dead loads; and (3) structures in which the dead and live load stresses may be of the same order of magnitude. Emeritus Professor F. C. Lea