Osbert Chadwick Esq., C.M.G.
4/12/1906.
The actual 3,000 feet of 6" diam. and 3,000 feet of 5" diam. Pipes.
quantities shipped were 3,053 feet 6" Pipe and 3,000 feet 5" Pipe as per copy Contractor's Invoice dated December 3rd. 1903 attached to the end of this report. A test pressure of 1,500 lbs. per square inch was specified on the Form of Tender, but no working pressure or thickness of metal was mentioned. Contractors when tendering, proposed alternative thicknesses of 3/16" (= 0.1875") and No. 4 W.G. (= 0.282"). The several tenders were referred to you, and you recommended the acceptance of Mr. E. Smith's tender for Pipes No. 4 W.G. thick, viz: the heavier of his two proposals.
6.
I was later instructed to inspect the Pipes, and in accordance with usual custom, submitted samples of the Wrought Iron Plates or "Skelp" to test & analysis, before the manufacture of the Pipes was commenced. The results of these tests and analyses were submitted to you on October 12th. 1903, and you approved of them on the 13th. October 1903. I give the results below in order to make this report complete in itself:-
Tests & Analyses of Wrought Iron Plate or "Skelp" made at the time of inspection.
Tensile Tests.
R.H.H.S.
Test Number Dimensions of test piece in inches Sectional area square inches Elongation on length of 8" Tensile strength tons per sq. inch Remarks 1 0.257 thick 1.494 wide 0.3839 6.5% 23.76 With the grain ! 20,808 2 0.258 thick 1.454 wide 0.3751 1.0% 19.27 Across the grain 23,809 2 244