Sheet metal structural shape and use in insulated decking struct

Details Sheet metal structural shape and use in insulated decking struct Sheet metal structural shape and use in insulated decking struct

1974-04-04

1976-06-29

Murtagh, John E.

Static structures (e.g., buildings)

Machine or implement

52333, 52338, E04C 304, E04C 5065

Patent

active

039656411

ABSTRACT:
A sheet metal structural shape for use as a purlin or sub-purlin in deck construction which is symmetrical about a vertical bisecting plane having a central vertical web, two legs projecting downwardly from the bottom of said web at an angle of about 45.degree. to about 75.degree. to the horizontal, each leg having a substantially horizontal flange projecting outwardly at its lower extremity, and a stiffening member at the upper edge of the web. Poured concrete insulated deck structures utilizing a series of the metal structural shapes with gypsum formboard resting on the horizontal flanges and extending between adjacent structural shapes, rigid synthetic polymer foam having an underside adjacent the upper side of the gypsum formboard and having holes vertically therethrough, the holes having an area of more than about 5 percent of the area of the underside of the foam, and poured concrete adjacent the upper side of the foam and around the stiffener to prevent uplift. A precast insulated deck structure utilizing the metal structural shape and insulating slab resting on the horizontal flanges and extending between adjacent structural shapes and grouting between said precast slabs and around said stiffener to prevent uplift.

REFERENCES:
patent: 426558 (1890-04-01), Dithridge
patent: 431203 (1890-07-01), Dithridge
patent: 1360720 (1920-11-01), Brown
patent: 2233054 (1941-02-01), Heeren
patent: 3148752 (1964-09-01), Lesage
patent: 3162280 (1964-12-01), Hinze

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