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ILLUSTRATED LONDON Architectural, Engineering, and Mechanical DRAWING-BOOK. In the work on Practical Geometry, in the' & infed of Educational-Books of which this treatise forms a part, we have given simple definitions and constructions of the various forms and figures which may be said to constitute the foundation of all drawing. We have there endeavoured to shew that a knowledge of geometrical construction is necessary, before a thorough appreciation of the principles of outline sketching...

Fig

And ft from these points draw lines parallel to cc, make them of the same length as ft'ft, . From e measure to cc join cef, cV. The radius of the circle in the centre is eg. Example 6, fig. 6. Draw lines corresponding to bde, hh in the copy. From a measure to d put in this, from as a centre, the circles d d and eV. From g measure to h, h, and parallel to bd from these draw lines touching the circle. From g measure to g1 and f from these points measure to o'cf through o'o' draw lines parallel to...

So To

ie plan is fig. 20 to be enlarged twice, as in fig. 19. Irregular portions of maps may be copied by adopting offset lines, as in Example 21, fig. 21, which represents part of a river, which is required to be copied and enlarged as below. Draw any line cd from any scale set off distances, as c r 50, gh 60, and so on. Next draw a line, as po, corresponding to cd fromp set off distances corresponding to those in cdf but taken from a scale larger than that of cd. From the same scale as that from...

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Mechanical drawings are -delineated in three ways as 1 plan,1 shewn in Example 41, fig. 44, which represents the 'plan' of a pulley or solid drum. In * elevation,' as in Example 42, fig. 45, which is the elevation of fig. 44. Elevations may be ' front,' 1 back,' ' end,' or 1 side In 1 section,' as in Example 43, fig, 46, which is a transverse vertical section of figs. 44 and 45. The same letters of reference denote the same parts in these three sketches. Sections may be divided into 1...

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Quarter to one diameter and three quarters. For the various species of intercolumniation, with their distinguishing names, see the work in this Series on Architectural and Ornamental Design. Where it is necessary to introduce doors, windows, & c., thus widening the space between the columns to a greater extent than true proportion requires, ' coupled columns' are introduced, the distance between them being such as to allow of the proper projection of their 4 capitals.' Example 94, fig. 96,...

Z

Tablature.' The height of the column, including base and capital, is equal to seven diameters. Example 68, fig. 68, is the elevation of half of the pedestal of the Doric column to same scale as the last example. Draw ap7 a b at right angles, make a b equal to 4 modules 5 minutes, or 4 modules 20 minutes. Make the ' plinth' ac equal 2.6 parts in height the * fillet' cd equal the 1 cyma recta' de equal the 1 fillet' e equal 1 the * cavetto' equal 4. Proceed how to put in the cornice make the top...

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Example 146, fig. 148, is the basement plan of a house the line 5 the centre-line. Example 147, fig. 149, is the ground plan. 80 illustrated london architectural, Example 148, fig. 150, is .half plan of first bedroom floor.' Example 149, . 151, is planofsefcatid bedroom floor. Example 150, fig. 152, is half front elevation. From the minuteness o the scale we give detail drawings which will shew the decorative portions more fully than in the sketch. The first of these we give is the elevation...

Yxi

Example 89, fig. 91, represents the base of the order. Heights, beginning with be, 10, 7, J, 2i, , 2, 2, i, 2, , 4 , 2, 1 projections, beginning with bd, 42, 42, 88, 36, 37, 37, 36, 36, 37, 36, 34. Example 90, fig. 92, represents the capital of the order. The semi-diameter of shaft at neck is 26 parts the fillet in height and 27 in projection the astragal 4 in height and 29 in projection. The height from 6 to a is 70, projection from a to c 45, and to d 60 the heights on the line fe are used by...

Cl

To m, and draw through this a line parallel to ab measure also to n, and draw nn. From m measure on both sides the distance mo also from n to n, n these points are the centres of the circles shewn in the sketch, the method of putting in of which is still further elucidated by Example 32. Let the line cd, fig. 32, correspond to mn in fig. 31, ab to nm, and fe to nn. From the point of intersection of these lines with cdy describe the circles as in the drawing. On each side of cg draw the lines...

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Example 156, fig. 158, is end elevation. We give this in full, as one side is different from the other. The half back elevation is given in Example 157, fig. 159. The transverse section is taken across the plan. The right-hand half of this is given in Example 158, fig. 160 the left-hand half in Example 159, fig. 161. The same letters of reference apply to both drawings. The pupil should make this section in one complete drawing. We have only shewn one part up to the roof-line, the other without...

P

Example 46, fig. 46, which is the 1 ground-plan' of a pair of cottages, the division or party-wall being at mn, a a the living-room, d the kitchen, s the scullery, f the back lobby, b the front lobby aa are fire-places, b windows, d doors. The method of copying this is given in Example 47, fig. 47. Draw the line op, fig. 46, and bisect it, drawing from the point of bisection another line ran at right angles to op next, as in fig. 47, draw the lines cd, ab at right angles, corresponding to...

Architectural Drawing

In this department the lessons which we shall first consider are those which require for their construction nothing but the arrangement and combination of right or straight lines. It is scarcely necessary here to state, that the instruments requisite for the various operations are the same as those re-* quired for the constructions described in the Illustrated Practical Geometry, the 6drawing-board,' ' square,' and 'triangle,' being absolutely indispensable. As tiie work above noticed is...

Shop Front Elevation

Front Elevation Doors And Windows

We now proceed to give examples of doors, and windows over doors. First, as to doors, of which, in Example 122, fig. 124, we give the elevation of one in the Roman style. Example 123, fig. 125, is the front elevation of another form in the Italian style. We now proceed to give examples of doors, and windows over doors. First, as to doors, of which, in Example 122, fig. 124, we give the elevation of one in the Roman style. Example 123, fig. 125, is the front elevation of another form in the...

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Pedestal Base Column Fillet

Let ab fig. 72 be the height of1 frieze,' and cd semi-diameter of column at base. Make be equal 4 parts the fillet beneath, the fillet ee beneath this equal 2 and from tof equal 4. Divide c6, bd each into six equal parts and parallel to ab, draw through these lines as in the drawing to the line gh. On gc, lay off equal 2 J parts to m, m and with mn from my lay off to o join no, no. On the fourth line from points g and h draw to o, oy and put in the angular lines. Bisect the fillet...

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