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The writer wishes to preface this paper by drawing attention to its title, which is slightly misleading, and might instead have been "The Well-Known Facts of Stone Decay
and a Suggested Remedy for the Present and Future."
SIR,-I have to thank Mr. Gordon Welch for his kindly criticism of my article which
appeared in the September issue. His remarks are in accordance with the mathematical
implications of the slope deflection of isolated members, but it is interesting to note that in Clause No. 17 of the preliminary draft revision of the Institution report, resisting moment of connections is made the criterion of pillar restraint. My assessment is on more conservative lines, for I do not put it forward for buildings with wooden joist floors, unencasedsteel, corrugated steel or fully glazed sides.
In some clauses of the Draft there seems to be an underlying assumption that steel will be encased and floors made fire-resisting ; but, in my opinion, Clause No. 17 needs strengthening in order to reward the design of rigid type buildings and penalise those with wooden floor joists, etc.
When preparing this paper for the Institution, the time at my disposal was unexpectedly curtailed, and I regret I was unable to include in it the following information which I hope will be found of interest to members.