Static structures (e.g. – buildings) – Processes – Filling preformed cavity
Patent
1975-11-11
1977-05-17
Faw, Jr., Price C.
Static structures (e.g., buildings)
Processes
Filling preformed cavity
52727, 61 35, 61 5352, E04B 100, E04C 330
Patent
active
040233251
ABSTRACT:
A reinforced horizontal slab having high bearing strength is created on the surface of the ground by initially forming a plurality of discrete vertically elongated reinforced zones in situ in the ground with their tops adjacent ground level and then covering the ground over and between the zones with a surfacing material constituting a slab that rests on the tops of said zones and on the ground therebetween. Each zone is a downwardly tapered concrete column having at least one vertically oriented reinforcing metal bar embedded therein. The zones are formed by a method which entails vibratorily vertically sinking a tapered hollow elongated mandrel into the ground at each zone location, vertically extracting the mandrel to leave a tapered vertical hole in the ground, filling the hole with concrete, vibratorily reinserting the hollow mandrel with a reinforcing metal bar therein and having its lower end laterally protruding from the mandrel tip, so that the concrete is expanded into the soil adjacent to the hole and the bar is vertically emplaced in the hole, vibratorily extracting the mandrel from the hole while leaving the rod in the concrete, and then allowing the concrete to set in the hole. The slab is poured on the ground surface over the tops of the columns, the slab being reinforced with a mat or reinforcing bars.
REFERENCES:
patent: 2150176 (1939-03-01), Levy
patent: 3184893 (1965-05-01), Booth
patent: 3301926 (1967-01-01), Reiland
patent: 3309877 (1967-03-01), Degen
patent: 3720034 (1973-03-01), Dawley
patent: 3886754 (1975-06-01), Turzillo
patent: 3946570 (1976-03-01), Freydier
Farber Robert C.
Faw Jr. Price C.
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