US926152A - Reinforced concrete construction for floors, walls, ceilings, and other structures. - Google Patents

Description

M. WADDELL.

REINFORCED CONCRETE CONSTRUCTION FOR FLOORS, WALLS, CEILINGS, AND OTHER STRUCTURES.

APPLICATION FILED APR. 2, 1908. 926,152.

Patented June 29, 1909.

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MONTGOMERY \\'A.l)l)l$Ll,, 01 NEW IOltli, X. Y. AS51050 01* ONE-HALF TU THOMAS J. it IAN, U1" NEW YORK, i\'. I.

REINFORCED CONCRETE CONSTRUCTION FOR FLOORS, WALLS, GEILINGS, AND OTHER STRUCTURES.

1 '0 all whom it may concern:

Be it known that I, MONTGOMERY WAD- DELL, a subject of the King of Great Britain,

other Structures, of which the following is a specification accompanied by drawings.

The invention relates particularly to concrete constructions having sheet metal cores embedded in the concrete for strengthening the composite construction.

The object of the present invention is to provide a form of sheet metal reinforcement in such a construction which shall be simple to manufacture and easy to use, and which at the same time shall be disposed in the mass or layer of concrete in a manner to be intimately united therewith and to impart great strength thereto.

The invention is particularly well suited for use in concrete structures having parallel faces, such as walls or floor spans, but, as will be well understood by those familiar with the art, it is also applicable to reinforcing arches, domes, and other shapes of concrete construction. In the drawings, Figure 1 shows cross section of a portion of a span of floor construction embodying the invention, the section being taken at right angles to the horizontal tension and compression stresses. Fig. 2 is a partial longitudinal section of the same on the section line 2-2 of Fig. 1. Fig. 3 is a reduced scale side view of the sheet metal reinforcement showing it made in arched form, but corresponding in transverse section to Fig. 1.

In -Figs. l and 2 a sheet metal reinforcement is shown consisting of sheet metal bent to form the undulating cross section seen in Fig. l and of length, as measured along the straight line elements of the sheet, sullicient to suit the span between neighboring sup ports. Fig. 2 simply illustrates one end of a horizontal span resting upon a supporting I-bcam B, the floor being broken away. The sheet metal C is continuous for the width of the span; but as soon in cross section (Fig. 1) it may be made up of any number of sheets of desirable width overlapped Specification of Letters Patent.

Application filed April 2, 1908.

Patented June 29, 1909.

Serial No. 424,822.

at intervals, as indicated at D, there being preferably several of the complete undulations in each individual sheet of the metal that is used. The undulating form of cross section shown causes the metal, of what I may term the crests F and troughs G of the undulations to alternately approach the upper and lower surfaces of the concrete E, E.

The intermediate ortions which lie transversely to the surface of the structure between the respective crests and troughs converge or incline toward each other in a direction toward the bottom of the trough, so that the troughs or spaces formed between them grow narrower as they recede from the respective upper and lower surfaces of the construction. This construction allows easy access in filling in the chan nels with concretewhen the article is used in concrete structures, and provides for a gradually increased strength and cross sec tion of the rib of material'to be laced in the troughs or channels, and also facilitates the painting or other treatment of the material of the troughs, where the article is so treated for protective or other purposes. These transverse portions of the undulations are corrugated minutely, as at H, and are flat or uncorru ated at their middle or intermediate areas gations accomplish the purpose of locking the mass of concrete within the bends or troughs of the undulating sheet metal structure, and for this reason the minute corrugations H must be abrupt or inclined enough to prevent the possibilityof the concrete mass being drawn out from the spaces or troughs made by the undulations.

It will be seen. that the corrugations illustrated. extend alternately about forty-five degrees to the perpeiulicular, so that any tendency of the lower mass E of the concrete to fall away from the sheet iron is resisted by the upwardly turned faces of the minute corrugations and the concrete interlocked thereby with the sheet metal. By making the central portions J of the parts of the undulations that are disposed transversely to the concrete surfaces of the construction plane instead of minutely corrugated, less weight of the sheet metal is placed at this plane of the. structure which corresponds to the neutral axis of the floor or structure illustrated than at the corru- These minute corrugated portions where the sheet'metal approaches more nearly.,the upper and lower tral'axis were also corrugated.

In Fig. 3 I have indicated that the sheet I metal may be ciirved lengthwise of the span without, of course, departing from the characteristic cross section at right anglesthereto which I have described.

-It-will be understood that in the case of a Vertical structure like a wall or partition, the cross sections shown in Figs. 1 and 2 would correspond to horizontal sections, whereas in a floor they are Vertical sections, as described. It will also be understood that the shape of the undulations facilitate filling in the concrete either by pouringaor by other methods of a lication well known in the art. It will st' further be seenthat thecross section illustrated in l facilitates the nestinfg-or packing of the metalsheets together r-shipmeiit.

I claim and desire to secure Patent the following: I 1

1'. Reinforced concrete construction for floors,- walls, ceilings, and other structures, havingconcrete and a sheet metal latetor core embedded in the concrete, said sheet metal plate -having an undulating cross section formingchannels or troughs, the sides-- of which are inclined toward each other in by Letters the direction toward the bottoms of the channels or troughs and have minute corrugations parallel with the channels or troughs and are plain or uncorrugated in the Vicinity of the longitudinal medial line of the said sides.

2. Reinforced concrete construction for floors, walls, ceilings and other structures, having concrete and a' sheet metal plate or core embedded therein, said sheet metal plate having an undulating cross section forming channels or troughs, the sides of which have minute corrugations parallel with the channels or troughs and are plain .or uncorrugated in the vicinity of the longitudinal medial line of the said sides.

3. Reinforced concrete construction for floors, walls, ceilings, and otherstructures, having concrete and a-sheet metal plate or core embedded therein, said sheet metal plate having an undulating cross section forming channels or troughs, the sides of which are plain or uncorrugated in the vicinity of the longitudinal medial line ofthe 'said sides, and are minutely corrugated at other portions.

EE. V AN ZANDT, ,HERMAN Monms.

In testimony whereof I have signed this specification in the resence of 'two SllbSCIlb--

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