Concrete column forming tube
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United States of America Patent
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-
Jul 12, 1994
Grant Date -
N/A
app pub date -
Jul 17, 1992
filing date -
Jul 17, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
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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