base; these are 4 feet by 8 feet 6 The use of concrete in monolithic masses, as above de- one who may choose to prepare it. inches by 13 feet; next, the piers which are placed on these. scribed, enables work of this character-to be erected in very COLLODION. For the first three or four arches these… … ing of the centers, so that ment, give four ounces of Fig. 2.-C0NSTRTTCTING THE FOUNDATIONS. the concrete could be rammed finished emulsion. in at all stages of the tide. The best results are obtained by keeping this emulsion, dams and ordinary masonry. The preparation of the bed for The…
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