Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 432
Fig. 997. … with or without concrete base, or the weight may be distributed by invertedarches between walls and piers. Wooden platforms are often used for foundations, but must be laid beneaththe water line where they are kept wet, otherwise rot will take place. Theseplatforms may be of a single course of…
Mechanical drawing
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