. Cyclopedia of architecture, carpentry, and building : a general reference work .... Fig. 41. Pig. d2. twice the number of spaces contained in d hin Fig. 38 as shownin Fig. 40. Draw a line from d to i and allow edges for d d i i will be the hali pattern for the lower flare. The braces or supports E and F, Fig. 38, are usually made ofgalvanized band iron bolted or riveted to hood and pipe. Thehood D must be water tight, or the water will leak into the deflector,from which it will drip from the apex inside the building. Elbows. There is no other article in the sheet-metal workersli
. Cyclopedia of architecture, carpentry, and building : a general reference work .... Fig. 41. Pig. d2. twice the number of spaces contained in d hin Fig. 38 as shownin Fig. 40. Draw a line from d to i and allow edges for d d i i will be the hali pattern for the lower flare. The braces or supports E and F, Fig. 38, are usually made ofgalvanized band iron bolted or riveted to hood and pipe. Thehood D must be water tight, or the water will leak into the deflector,from which it will drip from the apex inside the building. Elbows. There is no other article in the sheet-metal workersline, of which there are more made in practice than elbows. On thisaccount rules will be given for constructing the rise of the miterline in elbows of any size or diameter, also for elbows whosesections are either oval, square or round, including tapering elbowsBefore taking up the method of obtaining the patterns, the rulewill be given for obtaining the rise of the miter line for any size 104 SHEET-METAL WORK 45 or number of pieces. No matter how many pieces an elbow has,they join
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