DETAILS OF GREENHOUSE. No. 2.
PART ELEVATION.
Scale ¼ inch one foot.
These are then to be affixed in their places, as shown upon the drawing, some in thicker, others in thinner paper. A ledge of cardboard must be left at the back of the blocking, and also on the same level against the side of the house; this will be for the purpose of resting the roof upon.[[5]] The cornice will be constructed in the manner described for the others; the pieces on the frieze C, C, C (page [73]) will be placed on the required thickness for the return, but the return of the cornice must be cut in it. The plinth must now be moulded, cut, and fixed; and the whole is complete.
[5]. This description is for a circular roof; that, however, in the engraving represents a flat hipped roof. The method of proceeding is the same, except that for the latter no cylinder is required.
Chimneys, those great ornaments to a house, at least they should be rendered so, but, alas! for the taste of some of our modern architects, are far more frequently the reverse, and what in able hands and with judicious treatment would prove a crowning feature and a material assistance to the design, becomes a glaring error and ruins the whole. So much for the architect: but should he fortunately possess the ability and taste to produce those necessaries to our comfort, with equal credit to himself and benefit to the design, how often do we see his work marred by the introduction of Messrs. Somebody’s patent never-failing revolving smoke preventer; a hideous monster of some seven feet high, whirling and screeching upon the slightest appearance of wind. As our little Handbook has its mission to instruct in the Art of Modelling an architect’s production, and as smoke-jacks are but little indebted to him for their uneasy existence, we beg to apologise for this digression, and resume our original topic. Details of the chimneys will be found upon page [81] and [83]; for the body of the chimney use two thicknesses, and it will not be found necessary to mitre the join; for, if even ordinary care be taken, the union will be scarcely perceptible, while the labour will be considerably diminished. Form any strings, cornices, &c., &c., that occur, by cutting the piece flat, and then cutting the square out of the middle to admit of the shaft, slip it over the shaft or body of the chimney, till it arrives at the position required by the design, where it is at once to be secured in its place. Perhaps our meaning may be rendered clearer by the accompanying illustration. A represents the cornice prepared in the manner described, and only requiring to be fixed in its place. B, the shaft or body of the chimney over which the cornice is to be slipped till it arrives at the dotted lines; the chimneys may be fixed to the roof (shortly to be described) in the following manner: Should the chimney come on the roof lower down than the ridge, the bottom of the shaft will have to be cut to the angle required by the rake of the roof only; but should the chimney be cut into by the ridge, then the angle will follow that of the roof on both sides, diverging from the apex. For illustration of this we give the annexed sketches, page [83].
DETAILS OF CHIMNEYS.
DETAILS OF CHIMNEYS.
A represents a chimney, the base of which is cut simply one way, to suit the slope of the roof. B, a chimney into which the ridge cuts, and the angle cut both ways from the apex. It will, as a general rule, be found better to put chimneys together with thin paper, even in the smallest models, a squareness being thus produced not to be obtained otherwise. The base to be formed out of thickness equal to the projection, and treated in (as regards fitting it to the roof) a similar manner to the shaft, so that if the rake of shaft had chanced not to have been truly cut, there is no need to throw it away, as it could easily be blocked under with small pieces till straight, the base hiding all defects underneath. The method of working the strings, cornices, &c., has already been fully described in those for the tower and main building. Figs. 1 and 7, page [61].