. Timehri. Oppeb— White Boi row -Determa. LIGNO CONCRETE. A LARGE FIELD FOR THE UTILIZATION By L. P. Hodge, Assoc. M. Inst. In these scientific days most of us are sufficiently acquainted withPhysics to be aware that when a beam is loaded the upper portion is com-pressed and the lower portion is extended. The bending of a piece ofindian rubber will make this quite clear. Consequently the strength ofany beam depends upon the ability of the upper portion to resist crushing(or compression as it is more usually termed by the Engineer) andthat of the lower portion to resist
. Timehri. Oppeb— White Boi row -Determa. LIGNO CONCRETE. A LARGE FIELD FOR THE UTILIZATION By L. P. Hodge, Assoc. M. Inst. In these scientific days most of us are sufficiently acquainted withPhysics to be aware that when a beam is loaded the upper portion is com-pressed and the lower portion is extended. The bending of a piece ofindian rubber will make this quite clear. Consequently the strength ofany beam depends upon the ability of the upper portion to resist crushing(or compression as it is more usually termed by the Engineer) andthat of the lower portion to resist elongation (or tension ). Concrete, being composed of small pieces of stone or some other hardmaterial, has naturally a high resistance to compression. It has, however,so poor a resistance to tension that it is practically negligible. Thisdefect has been overcome of late years by inserting iron or mild steelrods
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Keywords: ., bookcentury1800, bookdecade1880, bookids3, booksubjectagriculture
