## Engineering Drawing

In this section we purpose explaining, chiefly by appropriate illustrations, the methods of delineating those subjects which form more particularly the branches of what is generally designated as Civil Engineering, whether these be shewn as plans, maps, elevations, or sections. As the rules, or more properly the methods, to be observed in copying subjects of pure outline, where the drawing-board and instruments are available, will obviously be very similar to those which we have already...

## Info

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...

## Mechanical Drawing

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...

## 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...

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