The Structural Engineer > Archive > Volume 9 (1931) > Issues > Issue 2 > Railway Bridge Construction in Malaya (Continued)
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Railway Bridge Construction in Malaya (Continued)

IV.-CONSTRUCTION OF PERMANENT BRlDGES. (1) Bores nad trial pits Several vexatious experiences, to be described later,have impressed upon the author the imperative necessity at whatever cost in time and trouble, of making quite sure before beginning a bridge as to the depth and character of the founds that will be necessary. The policy of starting to sink wells with the intention of simply carrying on until a hard bottom is reached is never justified. Intended sites for foundations must be explored either by bores sunk at the precise spot in question-it may prove badly deceptive to attempt to interpolate between bores sunk at different places, however close-or, preferably,timbering and anyhow it; is usually cheaper to batter the sides of the hole instead. John Edwin Holmstrom