Shaw's Civil architecture; being a complete theoretical and practical system of building, containing the fundamental principles of the art . eeting P S atF; draw Z F parallel to A B; then with the radiusF Q, describe the arc Q Z, cutting F Z at Z; throughZ and A draw Z y, cutting the arc Z Q at y; andjoin y F, cutting A B at V. On X, malvc X I equalto X F; with the same radius on W make W Hand W G; through V draw I R, make E T equalto E V, through T draw 11 IM and G N; then U, S,G, H, I, F, T, V are the centres. PROBLEM VIII. Ha\ing the two axes, or any other conjugatediameters, A B and C D, g
Shaw's Civil architecture; being a complete theoretical and practical system of building, containing the fundamental principles of the art . eeting P S atF; draw Z F parallel to A B; then with the radiusF Q, describe the arc Q Z, cutting F Z at Z; throughZ and A draw Z y, cutting the arc Z Q at y; andjoin y F, cutting A B at V. On X, malvc X I equalto X F; with the same radius on W make W Hand W G; through V draw I R, make E T equalto E V, through T draw 11 IM and G N; then U, S,G, H, I, F, T, V are the centres. PROBLEM VIII. Ha\ing the two axes, or any other conjugatediameters, A B and C D, given, to describean ellipsis through points, at the extremes ofany diameters taken at pleasure. 1. Through D draw P Q, parallel to A B from D;draw D F perpendicular to P Q, and make it equalto E B, or E A; upon F, with llu- distance F D, de-scribe the circle n D /?. 2. Through tlie centre E draw the line PEN,< E M, s E L, &c., at pleasure, cutting the tangentP Q at P, t, s, &c. Join P F, ;/.•/.. Il 7 TKOn. XI. Xll .
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Keywords: ., bo, bookcentury1800, booksubjectarchitecture, booksubjectbuilding
