A treatise on architecture and building construction (1899)
International Correspondence Schools · Scranton, The Colliery engineer co. · leaf 60
Fig. 32. piers are shown upon the skewbacks d. At (d) is shown asection of the arch a, an end view of the tie-rod d, and ele-vation of the pier c. 95. The best form of inverted arch is the three-centeredor elliptical, (as shown in Fig-. 33); next, the pointed; third,the circular; and lastly, the… … Fig. 33. 50 MASONRY. § 7 the line from a to b into three equal parts, then draw thethree circles c, c, c so that the circumferences of these circleswill be tangent at d, d. Then carry the perpendicular line£^-/through the center of the middle circle; the point/where it intersects the circumference…
Architecture · Building
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