Static molds – In situ construction engineering type or building type-mold... – Forming building structure
Patent
1992-07-17
1994-07-12
Nguyen, Khanh
Static molds
In situ construction engineering type or building type-mold...
Forming building structure
249 61, 2491141, 249134, 249DIG2, B28B 706, B28B 730, B28B 734
Patent
active
053281420
ABSTRACT:
A lightweight concrete forming tube is disclosed, and wherein the tube has a very thin wall of wound paper layers which permit the tube to be collapsed and wound into a reel to facilitate shipment and storage. In use, the desired length is severed from the reel, and the severed length is opened and positioned about a vertically disposed steel reinforcing structure. Concrete is then poured into the opened tube, and the hydrostatic pressure of the liquid concrete causes the tube to assume a circular cross-section and straight vertical configuration. Upon hardening of the concrete, the tube is severed with a knife and removed, leaving a formed concrete column of circular and straight configuration.
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Nguyen Khanh
Sonoco Products & Company
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