This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1912 Excerpt: ...emptied periodically, or to some form of automatic pump and tank arrangement. CHAPTER IV Drawings Of Piping And Apparatus Much labor can be saved and drawings can be finished with great convenience, accuracy and promptness if the method here explained is adopted in laying out heating work. It comprises in substance the ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1912 Excerpt: ...emptied periodically, or to some form of automatic pump and tank arrangement. CHAPTER IV Drawings Of Piping And Apparatus Much labor can be saved and drawings can be finished with great convenience, accuracy and promptness if the method here explained is adopted in laying out heating work. It comprises in substance the preparation of charts from which the leading dimensions of any size radiator, valve, fitting or other standard piece of apparatus used in heating work can be readily transferred to the drawing in question. Besides facilitating the production of drawings, there are many instances where the complexity of the plans or the close utilization of space is such that the utmost care needs to be exercised in arranging for the apparatus in order that there may be no attempt to put two things in the same space. The charts described, prepared by the author, are based on the actual dimensions of the parts of a heating system mentioned and are designed so that the draftsman can transfer the dimensions without need for proportional dividers or scale rule. Radiators Fig. 154 is designed to avoid constantly referring to catalogues for dimensions of radiators when laying them in to scale on drawings. The chart given is merely typical and in this case is for three column radiators of a well-known make. Other similar charts are used for single column, two column and four column radiators. In Fig. 154 which is drawn to a scale of in. to the foot, the distance horizontally from the vertical line A B to the several lines marked 18 in., 22 in., 26 in., etc., represents the length of radiators of different heights of the surface stated in the column at the left. The line for 38 in. radiators is made heavier than the others, as it is most often referred to, correspondi...
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