BOILERS FOR STATIONARY ENGINES . 41 projections at the ends , and the middle of the top , the open - ings between the bars varying from $ 4 to y inch , to suit soft … Fig . 20 . — Foundations for Boilers with small Internal Flue . A , End view . B , Section showing direction of Flue . C , Longitudinal section . and hard coal , the depth of the bars at the middle being from to 4 inch es . AREA AND DIMENSIONS OF CHIMNEY . To determine the area of the top of the…
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