US1990654A

US1990654A - Floor construction

Info

Publication number: US1990654A
Application number: US695603A
Authority: US
Inventors: Guy F Kotrbaty
Original assignee: Individual
Current assignee: Individual
Priority date: 1933-10-28
Filing date: 1933-10-28
Publication date: 1935-02-12
Anticipated expiration: 1952-02-12

Description

' G. F. KOTRBATY FLOOR CONSTRUCTION Filed Oct. 2a, 1933 Feb. 12, 1935.

Patented :Feb. 1 2, 1 935 UNITED; STATES PATENT OFFICE FLOOR CONSTRUCTION Guy F. Kotrbaty, New York, N. Y.

Application October 28,

19 Claims.

This invention relates to improvements in floor constructions and more particularly to a. novel flooring unit adapted to form a truss-form floor beam channel when used with similar units.

In my prior Patent No. 1,877,898, issued September 20, 1932, my pending application Serial- No. 509,237, filed January 16, 193-1, and Serial No. 474,156, filed August 9, 1930, allowedOctober 6, 1933, there h'ave been disclosed construction units and beam sections adapted for flooring and which are characterized by a high degree of structural efficiency.

It is an object of thecpresent invention to provide an improved flooring unit and beam section.

It is also an object of this invention to provide such an improved flooringflunit havinglaterally offset bottom portions.

'A further object of-this invention is the provision of an'improved flooring unit having portions adapted to support a plastic mass and cer-- tain other portions adapted to be embedded insaid mass.

Yet another object of this invention is the provision of an improved flooring comprisinga plurality'of juxtaposed. units having abutted lateral flanges adapted to receive and support an initially plastic building material.

Yet another object of this invention is the provision .of an improved method of floor con-, struction. I 4 These and other desirable objects and advantages of the present invention will be illustrated in the accompanying drawing and described in the speciflcatioma certain preferred embodiment being disclosed by way of illustration, for, since the underlying principles may be incorporated in other specific mechanical structures, it is not intendedto be limited to the ones here shown, except as suchlimitations are clearly imposed by the appended claims. 1

In the drawingJike numerals refer to similar parts throughout the several views, of which Fig. 1 is a top plan view,'partly in, vertical section, of a flooring including the novel units j of the present invention.

for engaging plastic disposed in the beam section.

Referring now to the drawing, there is disclosed an improved flooring unit or. grid comprising a bottom section 1 and atop. section 2 of tion or beam member.

1933, Serial No. 695,603

suitable material such as metal lath or the like, provided with a plurality of suitably disposed stiffening ribs 3 which may be formed integrally in the metal or comprise separate strips suitably secured thereto. The sections between the stiffening'ribs 3 may-be formed of expanded metal, indicated generally at 4, or any suitable foraminous structure, 'so as to provide a receptive and locking surface for applied plastic materialsin dicated generally by the numeral 5. The rib por- 10 tions 3 are preferablybent inwardly with respect to the centers of the grids in order to provide further looking for the plastic coat, the sections 6 thereof serving to prevent displacement of the plastic due to temperaturechanges.

As above intimated, the novel flooring units 0 the present invention are so configured and arranged as to provide a truss-form floor beam channel, which channel when filled with concrete or other suitable structural plastic material 20 is adapted to form a composite beam member.- The flooring units comprise bottom sections 1 and top sections 2, joined together b'y spacers 7. These members include avertical section 8 together with an outwardlyextending portion '9 25 forming together a substantially, L-shaped sec- The member 9' is bent upon itself at its end to form a gripping portion 10 adapted to engage the sides of the member 1. To improve the grip or crimping efiect of the 30 member 10 it is preferred to oifset it as indicated at 11 to secure a better bite on the material when the member 10 is crimped in position. At, the upper end of the L the member 7 is bent outwardly toform a section parallel to *member 1 5 and serve as a support for the metal sections 2. Sections 13 are provided with gripping portions 10, 11, as are the sections 9. The channel 14 formed between members 12 and 13 is adapted to serve as a plastic receiving space and its func- 40 tion will be adverted to more in detail hereinafter. Referring to Figs. 1 and 2 it will be seen that by juxtaposing a plurality of units of the type above described in such a manner that the flanges 9 abut, there is formed a plurality of truss-form .fioor beam channels designated generally by the numeral 15, which channels include side members 'Zand a bottom member 9-9. To improve the structural efliciency of the composite beam member formed by filling the channel 15 with 60, the plastic material 5, above referred to, the stresses imposed on the inner portions of the concrete beam 16 are carried to the outside steel form sections '7, which in themselves constitute a steel beam, by means of staggered rows of u tongues 17, formed from the sections 8 of the steel members and adapted to penetrate into the concrete beam 16 a suflicient distance to take up the stresses above noted. The apertures 18 formed by punchingout the tongues 17, as well as apertures 19 formed in the base sections 9, serve to permit the plastic material to flow therethrough and provide further locking for the composite member. The channel 14 also serves to provide additional reinforcement to the concrete beam in that it provides a shouldered support .for the body of the concrete beam, as well as providing a composite steel and concrete support for the flooring member 2 and the superposed plastic coating.

It will be noted that the tongues 17 entering into the bottom or tension portion of the concrete beam permit the stresses imposed upon the intersections of the beam to be directly transmitted to the steel form members, and, thus, utilize the structural strength of the steel to its fullest advantage while securing the desirable rigidity and strength of the concrete beam section. The provision of the

apertures

18, 19, above described, permits the securing of a monolithic bond between the several parts of the units comprising a floor construction.

The tongues 17, instead of being formed inwardly from the channel members may be formed separately and secured to the said members in any suitable manner as welding, brazing or riveting. This construction has the advantage of permitting the decoration of the outside of the channel members where the lath sections 1 are dispensed with and it is desired to have a roof beam simulating that of massive oak or like construction.

The composite beams formed as a part of the improved flooring are particularly adapted to replace present type wood or metal floor joists while securing the advantage of a reinforced concrete and metal construction.

If desired, the beam section 7 may be extended upwardly at 8 and outwardly at 8a, instead of being bent inwardly, to form the channel section 14. This construction maybe desirable in flooring units which are not intended to support heavy loads.- The advantages of the concrete section 14 may be secured, to a certain extent, by inverting certain of the tongues 17, as indicated at 17a in Fig. 3.

The sections 1 of the flooring members are adapted to serve as plastic receiving surfaces for ceilings, although if desired they may be dispensed with and the composite beams finished directly on the outside with a suitable plastic coat or provided with a facing of wood to simulate wooden beams.

It will be apparent that the novel method of the present invention provides a new and useful construction for floors generally, and one which is susceptible of considerable variation without departing from the spirit of the invention. The novel improvements herein disclosed permit the combination of the structural strength of steel with the ease of application of plastic building materials and the combination of such materials into structural units embodying a maximum or strength while maintaining the materials used at a desired minimum in weight.

What is claimed is:

1. A composite beam member comprising a pair of L-shaped truss-form beam channel sections having the horizontal legs outwardly disposed and having their free edges in mutually abutting relation, said channel sections having tongues extending into the channel formed between the said sections and a filling of structural plastic material in said channel monolithically bonded thereto.

2. A channel section member for construction units including an L-shaped structure having struck out tongue portions in the vertical legs and gripping portions on the ends of both the vertical and horizontal legs.

3. A channel section member for floor grid units including an L-shaped structure having gripping portions on the freeends of the legs of the L.

4. A channel section member for construction units including an L-shaped structure having struck out tongue portions in the vertical web, and gripping portions on the ends of both the vertical and horizontal legs, the vertical leg of the L being formed with a reentrant channel portion.

5. A channel section member for floor grid units including an L-shaped structure having gripping portions on the free ends of the legs, the upper end of the vertical leg being formed with a reentrant channel portion.

6. A composite beam member comprising a pair of truss-form beam channel sections in abutting relation, said channel sections being apertured and having tongues extending into the channel formed between the said sections, a filling of structural plastic material in said channel, and a coating of plastic on the exterior of said channel and monolithically bonded to said filling.

'7. An improved building construction unit comprising a grid having a top portion and a bottom portion of greater extent than the top portion, and a pair of L-shaped channel section:

having outwardly extending'horizontal legs and vertical legs disposed between the said top and bottom and respectively secured thereto at the free ends of the legs.

8. An improved building construction unit comprising a pair of L-shaped channel members pro-- vided with outwardly disposed horizontal legs and vertical legs, both legs having gripping portions on the free ends of the L and a pair of spaced structural sheet members respectively secured to the channel members at the said free ends.

9. An improved building construction unit comprising a top portion and a bottom portion of greater extent than the top portion and a pair of L-shaped channel sections disposed between the said top and bottom, the upper legs of the L's being provided with reentrant channel sections, and the horizontal legs of the L's being outwardly disposed, said top and bottom members being respectively secured to the free ends of the L-shaped members.

10. An improved building construction unit comprising a pair of L-shaped channel members provided with gripping portions at the free ends of the Us, the vertical legs of the Us being provided with reentrant channel sections, the horizontal legs of the L's being outwardly-disposed,

and a pair of spaced structural sheet members redisposed between the said top and bottom portions, the said vertical legs of the Us being provided with reentrant channel sections, said top and bottom members being respectively secured to the free ends of the L-shaped members.

12. An improved building construction unit comprising a pair of L-shaped. channel members having vertical legs, and outwardly disposed horizontal legs gripping portions on the free ends of the L, outwardly extending tongues in the vertical legs, the vertical legs of the L's being further provided with reentrant channel sections, and a pair of spaced structural sheet members respectively secured to the channel members and spaced thereby.

13. An improved building construction unit comprising a pair of L-shaped channel members having vertical legs and outwardly disposed horizontal legs gripping portions on the free ends or the L, outwardly extending tongues in the vertical legs, the vertical legs of the Us being further provided with reentrant channel sections,

and a pair of spaced foraminous structural sheet members respectively members. 4

14. An improved building construction unit comprising a pair of L-shaped channel members having vertical legs and outwardly disposed horizontal legs gripping portions on the free ends of theL outwardly extending'ton'gues in the vertical legs, the vertical legs of the L's being further provided with reentrant channel sections, and a pair of spaced ribbed structural sheetlmembers respectively secured to the channel members.

15. An improved building construction unit comprising a pair of L-shaped channel members having vertical legs and outwardly disposed horizontal legs gripping portions on the free ends of the L outwardly extending tongues in the vertical legs, the vertical legs or the Us being further provided with reentrant channel sections, and a pair ofspaced foraminous and secured to the channel ribbed structural sheet members respectively secured to the channel members.

16. An improved floor construction, comprising, in combination, a plurality of self-supporting open-ended abutted floor grids, said grids comprising top and bottom portions secured and spaced by L-shaped side portions, the bottoms of said side portions being laterally extended, outwardly, and abutting against similar portions of like units to form channel sections; tongues secured to the side sections, a filling of structural plastic material in the so-formed channels and in keying engagement with the tongues and a coating of plastic material overlying the assembly to form a finished floor surface.

1'7. An improved floor construction, comprising, in combination, a plurality of self-supporting, open-ended abutted floor grids, said grids comprising top and bottom portions secured and spaced by L-shaped side portions, the bottoms of of said side portions being laterally extended outwardly, and abutting against similar portions of like units to form channel sections; tongues secured to the side sections, a filling of structural plastic material in the so-formed channel and in keying engagement with the tongues, a coating of plastic material overlying the assembly to form a finished floor surface and a coat of plastic overlying the lower surfaces of the assembly. I 18. An improved floor construction, comprising, in combination, a plurality of abutted, openended floor grids being self-supporting and, said grids comprising top and bottom panel portions secured to and spaced by L-shaped side portions, the bottoms of said side p'ortions'being laterally extended with their free edges abutting against similar portions of like units to form channel sections; a filling of structural plastic material in the so-formed channels, and a coating of plastic material overlying the assembly to form a finished floor surface.

19. An improved floor construction, comprising, in combination, a plurality oi. abutted, openended floor grids, being self-supporting and said grids comprising top and bottom panel portions secured to and spaced by L-shaped side portions, the bottoms of said side portions being laterally extended with their free edga abutting against similar portions or like unitsto form channelsections; a filling of structural plastic material in the so-formed channels, a coating or plastic material overlying the assembly to form a finished floor surface and a coat of plastic overlying the lower surfaces of the assembly.

, GUY F. KOTRBA'I'Y.