. Factory and industrial management . of a future style. THE CANTILEVER IN ARCHITECTURE. 231 As to this, we have spoken at length of the cantilever, whether ofiron or of wood, as used for roofing areas ; it remains to speak of theprinciple as adaptable to bridging openings. We may assume that stone and brick will remain the customary-materials for the enclosing walls, whatever be the material of the roof-ing. Interpreted in stone, the cantilever becomes the bracket, or corbel,much used in the past, but never a preponderating motive of design. It is, nevertheless, I think, well suited to become
. Factory and industrial management . of a future style. THE CANTILEVER IN ARCHITECTURE. 231 As to this, we have spoken at length of the cantilever, whether ofiron or of wood, as used for roofing areas ; it remains to speak of theprinciple as adaptable to bridging openings. We may assume that stone and brick will remain the customary-materials for the enclosing walls, whatever be the material of the roof-ing. Interpreted in stone, the cantilever becomes the bracket, or corbel,much used in the past, but never a preponderating motive of design. It is, nevertheless, I think, well suited to become such a as stone is when subjected to a cross-strain, this fragility hasproved no bar to its use in the lintelled styles. When used as abracket, or more properly as a cantilever,—for the simple projectingbeam was first called a cantilever and exhibits the true cantilever prin-ciple,—stone is at least as appropriately employed as for a lintel, andthe more so as, by diminishing the leverage of the cantilever, we in-. FIG. 6. VARIOUS FORMS OK CANTILEVERS AS USED TO SPACE OPENINGS. definitely add to the serviceability of the stone. One point must beborne in mind,—that, although stone lintels often break, they seldomfall immediately. The compressive strength of the upper part at oncecomes into play when breakage has happened, and is usually enoughto sustain the lintel,—at any rate, for a while. But, in the case of acantilever of stone, the projecting end, if broken, drops at we cannot risk even half the projection for a stone can-tilever of given depth that a mere calculation of its comparativestrength would permit. Laying aside all idea of decoration for the moment, consider thevariety of forms this cantilever construction will permit in bridgingopenings, of which a few of the scores that are possible are shown inFig. 6. In that figure A shows the simplest use of the stone canti-lever, shortening the span and at the same time softening the a
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