Pile-Driving Calculations with Notes on Driving Forces, and Ground Resistance

CONSTRUCTION of the new reinforced concrete dam and bridge across the Madawaska River at Arnprior, Ont., was commenced in the latter part of September, 1928, and completed about the middle of December, 1929. George S.M. Grimmer

Sir,-With reference to Mr. Voce's sand-box test, as described by him in the June number of this periodical, I believe I could carry out the test if the sides of the box were of leather, canvas, or some such material; but his box has stiff sides; assuming they are of half-inch boarding, say a foot deep, how did he bend up part of these sides to conform with the bent-up portion of the base ?

The subject of this paper is wide and varied and an attempt has been made to embrace only the more general points likely to affect the professional career of the average engineer or architect. Extraordinary legal points frequently arise during a contract and are contested, but for many of these precedents cannot be quoted and the result is generally unsatisfactory to both parties. The architect or engineer concerned may not have a similar case during the rest of his career; such cases have been avoided in this discussion. W.T. Hills