Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 450
h are calked and thencoated with pitch, and the spaces be-tween the timbers filled with concrete. Fig. 1240 is a section of the pierof the Bismarck bridge. The sandwas removed from the air chambersby water ejectors. As it is removedfrom the chamber, the masonry sinksthe caisson, and when it reaches… … FiG. 1030.
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
