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A Treatise On The Principles And Practice Of Dock Engineering

Forfatter: Brysson Cunningham

År: 1904

Forlag: Charles Griffin & Company

Sted: London

Sider: 784

UDK: Vandbygningssamlingen 340.18

With 34 Folding-Plates and 468 Illustrations in the Text

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Side af 784 Forrige Næste
DRILLING APPLIANCES. 85 clay, but at a much slower rate—about 100 cubic yards per diem. In accordance with their more appropriate inclusion amongst dredging appliances, a description of them is relegated to that section. g. 49.—Hydraulic Excavator. Drilling Appliances.—For the removal of rock, old masonry, and other hard material, in large quantities, biasting is the expedient commonly adopted. For this purpose, and for others, such as the insertion of the ends of jetty piles in a foundation of natural rock, &c., drilling appliances are necessary.
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