m B toD equal to this height, D C ; divide theremaining portion, towards D, into threeequal parts ; give one of these parts tolengthen the distance from D to B ; callthis new point F. Now take the dis-tance from D to F and mark it off on C.Next take C and F, as centres respect-ively, and the… … CENTERING. 1869.] Practical Carpentry and Joinery. 443 C and P, respectively, for centres, withC I, and P G-, respectively, for radii,describe the arcs A I, and B Gr; thuscompleting the ellipsis. Having the Chord, to construct the Cen-tering for an Egg-shaped Culvert.Pig. 2. Take the chord A B, and…
Architecture
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