US2367146A

US2367146A - Flooring

Info

Publication number: US2367146A
Authority: US
Publication date: 1945-01-09
Anticipated expiration: 1962-01-09

Description

2106. COMPOSITIONSL' cross Reference Examiner COATING 0R PLASTII.

Jan. 9, 1945. c. r. SIEBS 2,367,146

7 'mofime Filed Jan. 21. 1943 wvE/vroe C. 7. 5/555 M By A M Patented Jan. 9, 1945 UNITED ,STATES PATENT OFFICE FLOORING Glands T. Siebs, Summit, N. 1., assgnor to Westcm Electric Company, Incorporated, New York, N. I" a corporation of New York Application January 21, 194:, Serial No. 413,058 r ,2 Claims. (01. 94-22) M This invention relates to flooring and more particularly to a reinforced concrete floor and a method of forming such a floor.

In erecting buildings on marshlands, it is common practice to drive piling to support the building walls and columns and to lay a reinforced concrete fioor on the soil between the walls, resting on the wall and column footings. Such floors are apt to sag in the center due to ground settlement. To overcome this trouble, floating reinforced concrete fioors can be laid directly on the soil as independent slabs, dowelled one to another but otherwise isolated from wall or column footing support. With such a design, maintenance of the original fioor surface elevations under ground settlement conditions can be effected by forcing filling material, such as a mixture of mud and cement, between the underside of the floor slab and the ground through holes in the slab suitably spaced. Reinforced concrete pavements and sidewalks and also analogous rigid structures, such as manhole casings, catch basins and the like, which are usually pile supported, may be similarly maintained with respect to the original elevations.

Objects of the invention are the provision of a simple floor construction which may be readily levelled and a method of making such a floor.

In accordance with one embodiment of the irivention, a reinforced concrete floor is formed by placing slightly tapered, well greased hardwood posts at spaced intervals between the reinforcing rods of a concrete floor before pouring the cement and then, after pouring the cement and permitting it to harden, the posts are removed and the holes left thereby partially filled with sand and finished off at the floor surface with a colored concrete mixture, whereby the location of the portions of the fioor which may be readily broken through, to permit relevelling operations by using mud jacks, are clearly indicated.

A better understanding of the invention will be had by reference'to the accompanying drawing, wherein Fig. 1 shows, in perspective, a fioor manufactured in accordance with the present invention, and

Fig. 2 is a fragmentary perspective view of a floor made by an alternate method of forming a floor.

In the drawing, wherein like reference characters designate the same parts throughout the several views, there is shown a concrete floor formed in slabs I, 2, 3 and 4. Each of the slabs "is formed of concrete poured to surround longitudinally extending reinforcing rods 5 and transversely extending reinforcing rods 5. In the process of forming the floor, the reinforcing rods for each slab may be laid in place and held in any suitable manner so that the concrete, when .poured, will completely surround the reinforcing rods. In addition to the reinforcing rods laid prior to pouring the concrete, separators 1 may be utilized to separate each slab from every other slab so that after the floor is laid, the separate slabs will not be rigidly connected one to another.

After the reinforcing rods 5 and 6 have been properly placed to form the desired reinforcing structure of the slabs, a series of slightly tapered posts 8 may be positioned at spaced intervals and in a regular pattern, the posts 8 being set into the ground, as indicated at 9, and being located in the interstices formed by the longitudinally extending and transversely extending reinforcing rods 5 and 6. Prior to being placed in position, the posts 8 may be suitably treated so that the concrete it, when poured, will not adhere to them. It has been found that by applying grease to the surface of the posts 8 and by slightly tapering them from top to bottom, the members may be readily removed from the slabs I, 2, 3 and 4.

After the reinforcing rods 5 and 6 have been placed in position and the posts 8 have been driven into the ground 9 in a predetermined arrangement between the reinforcing rods and after the separators 1 have been properly positioned, the concrete may be poured and permitted to set. Assoon as the concrete has set, the posts 8 may be removed and the holes H left in the concrete slabs may be partially filled with sand, as shown at l2, and then may be capped by a cap l3 of distinctively colored cement, which may be smoothed off flush with the top" surface of the slabs to indicate the place where the slabs may be readily broken through without striking the reinforcing rods 5 and 6.

In this manner, a concrete floor may be formed which, if any slab tilts or settles due to the ground 9 settling under the slabs, may be readily raised by the usual process of. pumping mud under the slab and the time required for performing this operation will be appreciably reduced since the weak spots in the fioor which are capped with the relatively thin layer of cement l3 will be apparent and may be readily broken through without the danger of striking a reinforcing rod and also without the formation of ja ged holes in the slabs.

In the alternate embodiment of the invention, as shown in Fig. 2, there is illustrated a method similar to that described hereinbefore except that after the concrete I0 has partially set and is ready for top finishing, the plug 8 is pulled from the hole II and the hole is filled with sand to a point just above the bottom of the concrete In. There is then placed in the hole ll an open topped metal can 20, which may be pushed down into the hole and filled with concrete, which may be of a color different from the main body of concrete l0. When such a hole is to be used for directing mud under the slabs, the plug may be picked out and the bottom of the can may be pushed downwardly, if necessary. It is probable that the bottom of the can will have rusted out by the time it is necessary to relevel the floor and a plug of this type will not tend to adhere to the main body of the concrete.

What is claimed is:

1. The method of forming a reinforced concrete floor on the ground which comprises driving removable plugs into the ground between the reinforcing rods of the floor prior to pouring the concrete, pouring the concrete to completely surround the reinforcing rods and to leave an upper end of each plug uncovered, removing the plugs, and filling the apertures with a distinctively colored and easily removable mixture.

2. The method of forming a reinforced concrete pavement on the ground which may be readily relevelled comprising laying reinforcing rods, driving tapered greased members in the ground at spaced intervals between the rods, pouring concrete to cover the rods and leaving the upper ends of the members exposed, permitting the concrete to set, removing the greased members, and filling the holes left by the removal of said members with an easily removable mixture.

CLAUDE T. SIEBS.