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The City and Country Builder's and Workman's Treasury of Designs: or, The Art of Drawing and Working the Ornamental Parts of Architecture : illustrated, by upwards of Four Hundred Grand Designs, for Peirs, Gates, Doors, Windows, Niches, Buffets, Cisterns, Chimney Pieces, Tabernacle Frames, ... Monuments, Fonts, Obelisques ... : finely engraved on 186 large quarto plates; proportioned by aliquot parts : to which are prefix'd the Five Orders of Columns; according to Andrea Palladio ... : the whole interspersed with sure Rules for Working ...; for the immediate Use of Workmen never published before, in any Language / Batty Langley
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Of Frontispieces for Doors to Mansion Houses. I ^

Plate XXVI, XXVII, XXVIII, XXIX, XXX,

XXXI, XXXII, XXXIII, XXXIV, XXXV,

XXXVI.

Frontispieces for Doors to Mansion-Houses, ( fie .

These Eleven Plates contain twenty-two De-signs of Frontispieces for Doors, of which thefirst two, Plate XXVI, are composed of Cham-pher’d Rusticks ; and proper for Enterances intoBuildings that have Porticoes before them, tocarry off the Rains, which themselves cannot do.The next two Designs, Plate XXVII, are also ru-sticated ; the one B, as the preceding the otherwith square Rusticks, and being both crownedwith Pediments are thereby made fit, to adornthe Enterance of any Building without a Porti-co ; As also, are all the Designs with Pedimentsin the following Plates. And when it happens,for Want of a proper Height, that a Pedimentcannot be made then in all such Cases the Cor-nice must break forward, and be supported byTrusses, as A, Plate XXVIII, XXXI, XXXII,.to carry off the Rains. It also very often hap-pens, that even when Frontispieces may be finish-ed with Pediments, that the Piojection of thePediment will not be sufficient to protect the En-trance from the Insults of Rains therefore insuch Cases, the Pediments must advance for-ward, and be fustain’d either by Trusses, as ex-hibited in Plate XXX, XXXI, or by Pilasters,or Columns, as in Plate XXXIII, XXXIV,XXXV, XXXVI.

As I have finished the greatest Part of theseDesigns with Pediments of all the Varieties ofthe Orders, I ihall in the next Place shew

How to find the different Curvatures of RakingMouldings of Pediments, and Modillions. . PlateXXXVII.

(i.) Let / /, v b, be the upper Fillet or Re-gula, and we, x o, the lower Fillet, of a levelCima Recta of a Cornice, also k I, g b be theRaking Regula or upper Fillet; and i c , m z thelower Fillet of the Raking Cima Recta, and letabc , be the Level Cima Recta given, whoseHeight is a c, and Projection a b. Divide a c in-to any Number of equal Parts, suppose 8, anddraw the Ordinates i p, 2 p, 3 p, &c.

(2.) On any Part of g b, as at e , raise a Per-pendicular as ef, to the Height of the RakingCima, which divide in the same Number of equalParts as a c, as at the Points 1, 2, 3, (fie. fromwhich draw Ordinates 1 p, 2 p, $p, (fic. eachrespectively equal to the Ordinates in the Cima A,and then tracing the Curve dp p, (fic. f, it willbe the true Curve of the Raking Cima.

(3.) Suppose the Point 9 Fig. C, to be the ut-most Point of Projection, in the Return of the Ra-king Cima, in an open Pediment.

Draw g h parallel to w c, and from h drawthe Perpendicular h i, which divide in eight e-qual Parts at the Points 123, from whencedraw the Ordinates 1 p, 2 p, 3 p, (fie. equal tothe Ordinates 1 p, 2 p, 3 (fie. in Fig. A.From the Point g, through the Points qqq. (fie,trace the Curve g pp, (fie. i, which is the trueCurve of the returned Cima, as required.

Fig. D E F is a second Example of an Ovo-lo, wherein the three several Heights are all e-qually divided into the fame Number of Parts,and the Ordinates of every one, are respectivelyequal.

Now what is here said with Respect to theRaking Members of a Pediment, is to be alsounderstood of the Members of Raking Modilli-ons. For if Fig. E, or P'ig. B, be consider’d asthe Front Moulding, then the Figures F and D,or C and A, are the Moulds or Curvatures ofthe two returned Mouldings.

For this excellent Method I am greatly oblig-ed to the Ingenious Mr. Robert Hartwell,at the Tower of London, Carpenter.

Plate XXXVIII.

To describe the Curvature of a Truss, for the Sup -port of a Cornice, &c.

(1.) Divide the given Hsight into eleven equalParts ; divide the upper three Parts in seven Partsand make n e the perpendicular Line of the Pro-jection of the upper Volute to eight of thofeParts.Also, divide the third and fourth Parts of itsHeight in seven Parts ; and make the Projectionof the lower Volute equal to eight of those Parts.

(2.J This done proceed in every Particular todescribe the two Volutes, and the Curve e c g,as directed in Sect. II. Prob. XV. of the Corin-thian Order, to describe the Volutes or Scrolls ofG the

 
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