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CHAPTER XIX.
Plumbing Elevations of Residence (continued). Plumbing Plans for Cottage..................

CHAPTER XX. Plumbing Elevations. Roof Connections....

CHAPTER XXI.

Plans and Plumbing Elevations of Six-flat Building.......

........

90

CHAPTER XXII.
Drawing of the Various parts of the Plumbing System. Use of Scale...

CHAPTER XXIII.

Use of Architect's Scales........

CHAPTER XXIV. Special Features in the Illustrations of Country Plumbing...

................

102

CHAPTER XXV.
Drawing of Wrought Iron Piping, Valves, Radiators, Coils, Etc.....

........ 106

CHAPTER XXVI. Drawing of Piping to Illustrate Heating Systems...

.......

109

Mechanical Drawing for Plumbers

CHAPTER 1 KHE man who to-day does high-class the obtaining of good work can be traced

plumbing or heating, and is directly to the fact that a neat little worthy the name of doing that sketch of the proposed work was submit

class of work, is as deserving of ted to the owner. The sketch showed that credit as is the lawyer who conducts the one who presented it was up-to-date, his case in court successfully, or and knew his business, and that thereby the physician who performs the duties he gained a better place in the opinion that devolve on him in creditable manner. of his customer than his competitor, was The trade, we must remember, is not in to be expected. the crude state that it was years ago And it is these little points that count, and if the plumber keeps abreast of the not merely to-day, but always in the years times, he must educate himself along sev. to come. eral lines in addition to the manual side In many sections of the country, par. of the question. He must be conversant ticularly where the work is of a high to some extent with chemistry, and the grade, the master and the journeyman subject of physics, that is, natural law, must as a part of the examination make is more valuable to him than to any a drawing of some system of plumbing. other man that we can think of. If he is Another quite general custom nowadays to make the most of himself and his op- is the demand by boards of health, that portunities, the progressive man cannot the plumber applying for a permit to do do better than to take up the study of work, shall first submit drawings of the mechanical drawing, at least so far as proposed work. it concerns the laying out of plumbing How convenient, and even profitable, to and heating work. A knowledge of the be able to submit work on such occasions subject is valuable, not only to the man as we have just cited, which shall be who is conducting a business and uses creditable. In visiting the different sechis knowledge in demonstrating his ideas tions of the country; it has been impressto the prospective customer, but even the ed upon the writer's mind that there is apprentice cannot afford to be ignorant a great demand for a knowledge of this of it, for on paper he can lay out work, subject, a demand which has not yet been run his lines of pipe and make his con- met. nections—all in a practical way—and The correspondence school fills a long. gain experience thereby that he cannot felt want, and we believe it to be a valugain in serving at the trade unless more able institution, but ofttimes a busy man fortunate than his brothers in the ad- does not feel that he can spare the time vantages that are given him.

necessary to such a course as given by The writer has in mind instances where them, which necessitates the taking up o! several branches of study as a means of As to instruments, unless it is desired covering the whole ground. While we to take up the inking of drawings, the would not dignify our present series of only instruments actually needed are a articles as a “course in drawing," it is pair of compasses for making large cirour intention to make it serve as such, cles, and a pair of bow compasses for as near as possible.

small circles. The latter instrument is It will be appreciated that the subject of special value in making neat work. is a difficult one to present, as it is best In Fig. 1 we show the drawing board, studied under an instructor who can cor- with the tee square in position, also both rect an error on the spot, and explain triangles. In Fig. 2 the large compasses fully wherein the error lies.

are shown, and in Fig. 3 the bow, or We would say, that in pursuing this spring compasses. series, it is with the idea of making it The tee square and triangles may be of

[blocks in formation]

Figure 1 of real practical value to those of our wood, for ordinary use. Celluloid trireaders who are interested in the subject, angles are especially good, as the work as we believe that every master plumber beneath shows through them. and steam fitter should thoroughly under- It is no doubt well known to our readstand the manner to draw at least in a ers that horizontal lines are made along crude way the plans for work on which the edge of the tee square and vertical he may estimate.

lines are made along the edge of the triAs a preliminary to pursuing the sub- angle held against the edge of the tee ject of drawing, the student should pro- square. With triangles which are true, vide himself with the necessary tools, this insures true work, but if the vertical which include the drawing board, tee lines are made by holding the tee square square and triangles (30 deg. and 45 deg.) against the lower edge of the board, there and a small set of instruments.

is very little chance of the work being

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