Economics of Construction in Relation to Framed Structures PDF
Preview Economics of Construction in Relation to Framed Structures
ECONOMICS OF CONSTRUCTION IN RELATiON TO FRAMED STRUCTURES. BY R. H. BOW, C.E., F.R.S.E. PA.KTS. FX?,ET_,I3VIIISr^.IRTST PART F ."" ! sst IIAGR WSmm mm ; ;, CORNELL UNIVERSITY LIBRARY ENGINEERING TG 260.B782 Economicsofconstructioninrelationto 3 1924 004 138 123 Cornell University Library The original of this book is in the Cornell University Library. There are no known copyright restrictions in the United States on the use of the text. http://www.archive.org/details/cu31924004138123 ECONOMICS OF CONSTBUCTION IN RELATION TO FRAMED STRUCTURES ECONOMICS OF CONSTBUCTION IN RELATION TO FEAMED STEUCTUEES By EOBERT H[S/TBBCOW, C.E., F.E.S.E. PRELIMINARY PARTS PAET I.—CLASSIFICATION OF STEUCTUEES PAET II.—DIAGEAMS OF FOECES LONDON E. & F. N. SPON, 48 CHAEING CEOSS : NEW YORK 446 BROOME STREET : EDINBURGH ADAM & CHARLES BLACK : 1873 [AHrightsreserved.} PKEFACE. The two Parts now published are calculated toform a useful Manual in themselves. And as they are almost altogetherof a preliminary character in relation to EconomicsofConstruc- tion, no introduction to that subject need here be attempted. But as touchingupon theneglect ofthat branchofEngineer- ing Science, I may quote the followingpassagewithreference to British Engineering from Applied Mechan—ics by the late eminent ProfessorW. J. Macquorn Rankine: "In toomany cases we see the strength and thestability which ought to be given by the skilful arrangement of the parts of a structure, supplied by means of clumsy massiveness, and of lavish ex- penditure of material, labour, and money; and the evil is increased by a perversion of the public taste, which causes works to be admired, not in proportion to their fitness for theirpurposes, or to theskill evinced inattainingthat fitness, but in proportion to their size and cost." Part I. is devoted to the Classification of Structures, but the illustrations are, in the meantime, confined to Roof and Bridge Trusses. Manypreviousattempts have beenmadeby others and myselfin this direction, but not one of those that I am acquainted with is at all satisfactory. 1 trust that the classification now given, although no doubt open to some objections, will commend itself as based for the most part upon scientific distinctions. A considerable number of the designs supplied to illus- trate the classification are original. PREFACE. Part II. gives the application of the recently expanded method of arriving at the stresses in structures by drawing diagramsoftheforces. Theimportanceto whichthismethod has attained is almost altogether due to Professor J. Clerk Maxwell,who has shown how surprisinglygeneral its applica- tion is, and who has placed it in quite a new aspect by his discovery or detection ofthose diagrams offorces which bear a reciprocal relationship to the relative framed structures. When I first gave particular attention to the method, it was'with a view topreparinganappendix to thegeneral work I projected; but having devised animprovement in themode of lettering the diagrams, I was led on to devote a consider- able amount of time to the subject; and the notes and par- ticulars of its application accumulating on my hands, I have thought them deserving ofseparate publication. Some novelty may also be claimed for the application of the method to the imperfect structures constituting Class II. 7 South Gray Street, Edinburgh, October 1873.
The list of books you might like
