Fig. 27.—Cyclopean Bucket for Depositing Concrete Under Water (Closed Position).
Fig. 28.—Cyclopean Bucket for Depositing Concrete Under Water (Open Position).
Figures 29 and 30 show the subaqueous concrete bucket made by the G. L. Stuebner Iron Works, Long Island City, N. Y., essentially the same bucket, omitting the cover and with a peaked bail, is used for work in air. For subaqueous work the safety hooks A are lifted from the angles B and wired to the bail in the position shown by the dotted lines, and a tag line is attached to the handle bar C. The bucket being filled and the cover placed is lowered through the water to the bottom and then discharged by a pull on the tag line.
DEPOSITING IN BAGS.—Two methods of depositing concrete in bags are available to the engineer; one method is to employ a bag of heavy tight woven material, from which the concrete is emptied at the bottom, the bag serving like the buckets previously described simply as means of conveyance, and the other method is to use bags of paper or loose woven gunnysack which are left in the work, the idea being that the paper will soften or the cement will ooze out through the openings in the cloth sufficiently to bond the separate bagfuls into a practically solid mass.
Fig. 29.—Stuebner Bucket for Depositing Concrete Under Water (Closed Position).
Fig. 30.—Stuebner Bucket for Depositing Concrete Under Water (Open Position).
