Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Spacer-positioner; e.g. – rebar chair
Patent
1986-02-04
1987-02-24
Raduazo, Henry E.
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Spacer-positioner; e.g., rebar chair
52689, 52678, E04C 516
Patent
active
046447270
ABSTRACT:
The chairs include a lower chair portion for supporting multiple prestressing cables at the bottom of a plank and a narrow upper chair portion for supporting an upper prestressing cable located in the web between the hollow cores of the prestressed plank. The upper chair portion can be inserted into the strand receiving cups of the lower portion to form a structurally sound support for accurately placing the top and bottom reinforcing strands in the plank as it is cast.
REFERENCES:
patent: 1903356 (1933-04-01), Bitney
patent: 3114221 (1963-12-01), Eriksson
patent: 3694988 (1972-10-01), Skold
patent: 3694989 (1972-10-01), Oliver
patent: 3783574 (1974-01-01), Cennerelli
patent: 3830032 (1974-08-01), Bobb
International Price List, Jan. 1982, by Plasclip.
Plasclip Components for the Construction Industry, printed by RGM Lithoprinters, Yeovil, Somerset, England.
Preco Econochair Multi-Gage Mesh Reinforcing Chair, by Preco 55 Skyline Drive, Plainview, NY 11803 (Copyright 1975).
Brock-White Co. "Formwork" (single sheet).
Prestress Supply Inc. Lakeland Florida Form PL-181501.
Spillman Plastic Accessories, Brochure No 80-01.
Fox Lonnie G.
Hanson David W.
Koehn Richard R.
Nash Richard C.
Fabcon, Inc.
Raduazo Henry E.
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