US 4,542,613 AGranted

Precast concrete building panel and method of producing the same

OwnerMarco A. Leyte-Vidalinventor

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Abstract

Relatively lightweight precast building panels for use as wall, roof or floor sections are provided. Each panel is molded in a form which is generally rectangular in configuration and provides a cavity into which concrete is poured, the floor of the form being comprised of a plurality of recessed styrofoam inlays separated by wood strips such as furring strips which are also used as a separation between the entire inside perimeter of the form and the styrofoam inlays. After the styrofoam inlays and wood strips are placed, concrete is poured into the form and finished off in the conventional manner. The side walls of the form are removed after the cement sets up and there results a concrete building panel with an adhered styrofoam coating permanently bonded over one surface with wood strips around the perimeter thereof and between each pair of styrofoam inlays.

Claims11

Dependent claims

A precast concrete building panel, having a predetermined length, width and thickness, for use as wall, roof or floor sections comprising:

(a) a finished planar concrete surface forming a first side of the panel;
(b) box-like insert means for at least partially filling said panel and cast in said panel, said insert means formed of lightweight insulating material in rigid form and having,
1. an open side flush with and at least partially defining a second side of said panel,
2. a closed side disposed a predetermined distance from said planar concrete surface within the thickness of said panel, and
3. opposed side and end walls connecting the periphery of said closed side and extending outwardly to said second panel side, said opposed side and end walls being positioned a predetermined distance inwardly of the periphery of the panel;
(c) a relatively thin concrete panel portion disposed between said closed side of said insert and said finished planar concrete surface;
(d) thickened concrete beam portions extending around the panel between said opposed side and end walls and the periphery of the panels;
(e) a plurality of fastening strips each disposed adjacent one face of said thickened concrete beam portions and an outer peripheral edge of said insert means and extending along the length of the latter, anchor means for securing said fastening strips to said panel and being secured to each of said fastening strips and extending outwardly therefrom into embedded relation within said one thickened concrete beam portion, each of said fastening strips being thereby fixedly disposed in flush relation to and at least partially defining said second side of said panel, and
(f) said concrete panel, beam portion, fastening strips and insert means being permanently bonded together and forming an integral one-piece construction of said building panel.

6 more elements

A method of precasting a concrete building panel having an integral, one-piece construction and including a first side defined by a planar concrete surface and a second side defined by an at least partially open surface, said method including the steps of:

(a) providing an edge formed over a base member, said edge form having a predetermined length, width and depth,
(b) providing a plurality of box-like inserts formed of a semi-rigid lightweight insulating foam material and having an open side and a depth somewhat less than the depth of said form and being of a predetermined length and width,
(c) lining said plurality of box-like inserts, open side down, on said base member, in a spaced apart, parallel relationship within the cavity formed by said edge form;
(d) placing fastening strips on said base member between said inserts and edge form about the entire inside periphery thereof and between each pair of sid inserts;
(e) pouring concrete into said form to the top edge thereof and finishing the top surface of said concrete to form relatively thin concrete panel portions permanently bonded over each of said inserts and relatively thick beam portions permanently bonded around the entire inner periphery of said form and between each pair of said inserts;
(f) anchoring said fastening strips to said thick beam portions and adjacent said inserts and in flush disposition to said open sides of said inserts so as to at least partially define said second side of said panel;
and
(g) removing said edge form after the concrete has set up and removing the panel from the base member.

5 more elements

Dependencies are inferred from the claim text.