Hydraulic and earth engineering – Foundation – Columnar structure
Patent
1976-11-26
1979-01-02
Shapiro, Jacob
Hydraulic and earth engineering
Foundation
Columnar structure
405244, 52170, E02D 530
Patent
active
041320824
ABSTRACT:
A concrete pile fitted with a special slightly tapered concrete tip of larger area. The tip has a central open socket for receiving concrete poured in after the pile is in place.
REFERENCES:
patent: 1778925 (1930-10-01), Thornley
patent: 2065507 (1936-12-01), Alexander
patent: 2187318 (1940-01-01), Grevlich
patent: 3751931 (1973-08-01), Merjan
Shapiro Jacob
Sheffer Abner
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