Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 505
n I o I n o—1 I——■ Fig. 11(30. Fig. 1161. Fig. 1162. Roofs may be very neatly and strongly framed by the introduction of cast-iron shoes and abutting plates for the ends of the braces and rafters. Fig. 1160 1 ! o om A <■ 1 y^ m \ … £1
Mechanical drawing
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