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The analysis of the damped and undamped earthquake response of non-symmetric multi-storey structures is presented, with consideration of the foundation mass and partial restraint of the structure in the subgrade. The analysis is based on the continuous connection method using the normal modes of the structure. Proportional and constant
damping are considered.
E. Mendelson and M. Baruch
In the section of the paper headed 'Serviceability limit-state' the authors state that further attention should be given to the problem of cracking in skew slabs where the cracks do not necessarily form perpendicular to the reinforcement. In fact, work has been carried out athe Cement and Concrete Association on this problem with particular reference to slab bridges.
The design of remforced concrete deep beams is not yet covered by the new British Code CP110:1972. The major design methods currently available are reviewed in this paper,
namely, those proposed by ( l ) the European Concrete Committee in 1970; ( 2 ) the American Concrete Institute in 1971; and (3) the Portland Cement Association in its long standing document ST66 issued in 1946. The more recent proposals by the authors and their co-workers are also explained; unlike the others, the authors' proposals cover also deep beams with web openings.
F.K. Kong, P.J. Robins and G.R. Sharp