Method for reinforcing tubular ducts

Details Method for reinforcing tubular ducts Method for reinforcing tubular ducts

1982-12-08

1985-05-28

Friedman, Carl D.

Static structures (e.g., buildings)

Processes

Anchor, bond, etc.

52664, 264 32, 264 34, 264 36, E04B 116

Patent

active

045191778

ABSTRACT:
There is disclosed a method of reinforcing a tubular duct using a longitudinally flexible reinforcing member built up from a plurality of combined layers having interstices therein and formed from steel wire or similar material. The method involves arraying the member circumferentially inside the duct, securing the member against the wall of the duct, and applying concrete to the covered walls.

REFERENCES:
patent: 344670 (1886-06-01), Morris
patent: 791076 (1905-05-01), Chenoweth
patent: 3296690 (1967-01-01), Barron
patent: 3800492 (1974-04-01), Oroschakoff
patent: 3844511 (1974-10-01), Tolliver
patent: 3914915 (1975-10-01), Van Schyndel
patent: 4264542 (1984-10-01), Magnus
"Sewer Renewal by Insertion with Nipak Polyethylene Pipe," May 9, 1973, Dallas, Texas.
"Updating Aging Sewers Without Trenching," by H. S. St. Onge, Jul., 1974, Engineering and Contract Record.

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