Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 664
Fig. 1540. ARCHITECTURAL CONSTRUCTION. 647 … Fig. 1541. flues connected with the heating of common buildings this rule will not obtain;flues for this purpose should be at least 8 X 12. But as a large area of chim-ney flue does not interfere with the draught, and as the necessities of chimneys usu-ally increase by the extensionof works, it is…
Mechanical drawing
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