Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 165
laced opposite each other, as shown in Fig. 5.Such boilers are rated up to 6,000 square feet and over. Arrangement of Grates. Certain makers, in order to. avoid mak-ing patterns for a boilerwith a wide grate, securethe necessary grate sur-face by adding to thelength. For ordinarylow-pressure… … m a low-pressureboiler. Not long ago fewportable boilers withgrates wider than 36inches were manufac-tured. Now, boilers with42-inch, 4S-inch, andeven wider grates, arecommon. Selection of Boilers.It is well in selectino; aboiler, to see that theproportion of heatingsurface to grate surfaceis not…
Architecture · Building · Carpentry
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