US1039895A - Concrete floor construction. - Google Patents

Description

w. H. gBUfiK. CONCRETE FLOOR CONSTRUCTION.

APPLICATION FILED JUNE 17, 1910.

2 SHEETS-SHEET 1.

Patented Oct. 1, 1912.

w. H. BURL CONCRETE FLOOR CONSTRUCTION.

APPLIOATIOKIILED Jun: 11, mo.

Patelgted 0ct. 1,1912.

2 SHEETS-11231 2.

l lz'iiwazsas': fiVeiZEi J rrnn STATES PATENT oFFic WILLIAM BURK, OF- ST. LOUIS, MISSOURI, ASSIGNOR 'IO CORRUGATED BAR COM PANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI.

GOITGRETE FLOOR CONSTRUCTION.

To all it may concern:

Be it known that I,VV1LLIAM H. BURK, a citizen of the United States, and a resident of the city of St. Louis and State 'of Missouri, have invented anew and useful Improvement in Concrete Floor Construc; tions, of which the following is a specificaance to stress they will vary in accordance with the loads and stresses imposed upon them by their position in the structure and in their relation to the supports.-

It also consists in the constructions and arrangements of parts hereinafter described and claimed. 1

In the accompanying drawings which form part of this specification and wherein like symbols ,refer to like parts wherever they occu Figure 1 is a plan of a floor embodying my invention; Fig. 2 is a cross section thereof on the line 2+2; 3 is a cross section of afloor provided with a wooden floor covering; Fig. 4: is a p an of a modified construction of a floor embodying my invention; and Fig. 5 is a cross section on the line 5-5 of Fig. 4.

In the construction illustrated in the accompanying drawings, the columns 1 arelocated to form rectangular bays. Extending from column to column around four sides of Specification of Letters Patent.

Application filed June 17, 1910. Serial No. 567,348.

Patented Oct.'-1, 1912'.

tion can be satisfied in various ways. For instance, as illustrated in Figs-l to 3, in elusive, of the drawings, the beamsfin the outer or marginal portion of the bay may be made wider and of relatively greater strength and load-sustaining capacity than the beams in the middle portion of the bay. In this case, all of the beams are oi even depth and they are preferably spaced at equal intervals apart, in order that tiles 4. i

of uniform size may be used therewith. In this construction it is theoretically desirable to make each beam in succession narrower than the one next adjacent to it outwardly therefrom; but for practical purposes, the innermost beams may be made of the same SlZ8-' In order to take care of the shearin stresses adjacent to the column, it is ref erable to form the corner portions 5 o the bays solid and to reinforce the same in some suitable manner.

In the practical building of my construction, a flat or smooth-surfaced falsework or centering is erected. The metal reinforce for the respective beams is then positioned above the falsework, and hollow tiles or blocks or other fillers 4 are then set on the falsework in proper position with respect to the metal reinforce. he concrete is then filled in and permitted to set and harden, being preferably monolithic with the columns and the adjacent bays. By reason of the centering being flat, the cost of building is comparatively small, {and the bay is of even depth throughout." The construction dispenses entirely with main girders and gives a maximum head-room entirely free from obstruction.

In the construct-ion abbve described, theupper surface of the bay consists partly of the tops of the concrete beams and partly of the tops of the tiles. As illustrated in Fig. 3, this construction may be covered with a layer of cement; or it may be covered or' finished in any other desirable manner.

The construction may also be varied by the use of tiles or filler blocks of varying depth'as shown in Fig. 5, so as to allow the upper part of the beams to be connectedI with a slab of concrete of such thickness as to secure the necessary compressive area in' the concrete. beams that are most heavily stressed.

Obviously, the constructions herein described admit of considerable modification without departing from my invention. Thus, all ofthe beams may be of uniform width, but reinfdrced proportionately to the stresses computed for the region in whichthey are located. So, too, the beams may be of uniform strength but spaced at increasing intervals toward the middle of the bay. It is also noted that the bays or slabs may, obviously, be supported at two opposite or ally four sides by walls instead of columns at the corners thereof.

'What I claim is z 1. In a system of floor construction, supports arranged to divide the floor into panels and a composite tile and concrete slab resting thereon, said slab comprising series of intersecting reinforced concrete beams of different widths crossing the floor panels intermediate the supports, the wider beams being disposed adjacent to the margins of the panels.

2. A monolithic reinforced concrete building construction comprising columns and a plurality of floor panels supported thereby, each panel having a plurality of groups of parallel beams arranged in two intersecting series, said beams being all of substantially even depth and each of said series comprising beams of different widths, the beams crossing the middle portion of the panel being narrower than the marginal beams.

3. A rectangular floor panel comprising a series of reinforced concrete beams par allel with one of its sides and a second series of reinforced concrete beams intersecting those of the first series at right angles, each of said beams being of uniform depth and width but the width of some beams differing from the width of other beams of the same series, the wider beams of each series being arranged near the margins of the'panel.

4C. In a buildingconstruction, floor panels and supports therefor, said panels comprising series of intersecting reinforced concrete beams of even depth, the beams decreasing respectively in width progressively from the marginal edges toward the middle of the panel.

5. A system of floor construction comprising columns and rectangular panels, each of said panels comprising a series of reinforced concrete beams crossing the same intermediate saidcolumns and parallel with two of its sides, said beams being of substantially even depth but the beams adjacent to the margins of the panel being wider than the inner beams.

6. A system of floor construction comprising columns and rectangular panels, said panels comprising a series of reinforced con- Crete beams crossing the same intermediate said columns and parallel with two of its sides, each of said beams being of substantially uniform section throughout but successive beams being of different sectional area, the beams of greater sectional area being arranged adjacent the margins of the panels.

. 7 A system of floor construction comprising supports and rectangular panels resting thereon, each panel comprising series of intersecting reinforced concrete beams parallel with two of its sides, said beams being of even depth but respectively of a width substantially proportional to the distance from the middle thereof to the center of the panel.

8. A composite tile concrete floor slab and supports therefor, said supports dividing the floor into bays, tile blocks having their bottoms flush with the lower surface of the slabspaced in intersecting rows across said bays, said tile blocks being of different heights, the spaces between the marginal rows of blocks in said bays being greater than the spaces between the central rows, and concrete filling in the spaces between and'over said tile blocks, said concrete filling being flush with the upper surface of the slab and constituting intersecting series of spaced beams lying partly above and partly between said tile.

9. A rectangular floor slab comprising series of intersecting reinforced concrete beams parallel with two of its sides, the amount of reinforcement in the beam; of each series being greater in some than in others so that the beams are of varying strength, the beams of greater strength be ing arranged adjacent to the margins of the slab.

10. A rectangular floor slab comprising series of reinforced concrete beams parallel with each of its sides, said beams intersecting the amount of reinforcement in the beams being greater in some than in others so that the beams are' of varying strength, the beams of greater strength being arranged adjacent tthe margins of the slab and the inner beams decreasing successively in strength.

11. A system of construction comprising supports and rectangular bays supported thereby, each bay comprising series of intersecting reinforced concrete beams parallel with two of itssides, said beams being of substantially even depth but the amount of reinforcement in the beams being'greatcr. in some than in others so that the beams are of'varying strength, and arranged in the order of decreasing strength inwardly from the margins of the slab, and filler blocks fitted tightly between the adjacent beams.

12. A system of tile concrete floor construction comprising supports and rectangular tile concrete panels supported thereby,

each panel comprising separated rows of spaced tiles and series of lntersecting reinforced concrete beams filling the spaces lreetween said tiles; the tiles in each row being; spaced apart all diiiorent distances, the wider spaces bcing near the ends of the row.

f i. A. ,j slitlll ot' floor constrm'etion comprising supports and rectangular reinforced .rote panels supported thereon, said panels comprising 2 series of beams parallel with two of its sid s said beams being pro vided with reinforcing bars in their lower regions. th e number of bars in the respective beams being varied, and there being fewer bars in each successive beam, proceeding inwardly from the marginal. portions of the panels, and filler blocks fitted in. the spaces between the beams and integral With. said beams.

14. A system of floor construct-ion com- }iirising supports and rectangular panels resting thcreon, each panel comprising a plurality of intersecting beams crossing the same intermediate said supports and arranged With their lower surfaces in the same plane,

reinforcing rods arranged in the lower re-..

gions of said beams, the amount of reintr).'(:ei'i1critin the beams being greater in the beams adjacent the margins of the panels than in the beams remote from the margins of the panels, the said beams being connected ith a slab or body of concrete builtintetherewith and acting as part of said 1501 the resistance of compressive id slab being thicker in some porpanels than. in other portions system c). floor construction conisupports and a composite tile concrete 001 slab resting thereon, said slab comprising a plurality of concrete beams of diil'erent widths arranged parallel to the edges of the bays defined by the supports, said beams being arranged progressively in order of: decreasing Width from the margins toward the middle of said bays, tile blocks of different depths fittedbetween adjacent beams, and concrete'filling over some of said blocks and integral With said beams.

16. A. composite tile concrete floor panel comprising a. plurality of tile blocks arranged in intersecting series of spaced par allel rows extending across said panel, the rows of tile near the margins of the panel being spaced farther apart than the rows of tile crossing the middle of the anal, the spaces between said tile being filled with concrete forming intersecting parallel ribs of varying Widths, the Width of said ribs varying with the changes in the s acing apart of the rows of tile blocks a jacent thereto respectively.

17. A. system of floor construction comprising columns and quadrangular floor slabs, said slabs comprising series of em bedded reinforced concrete ribs, each series being parallel with one of the sides of a slab and crossing the same intermediate said 001- umns, and rows of spaced tiles of different sizes fitted between said ribs, the tiles in the marginal rows being uniform in size and larger than the tiles in the central portions of the slabs.

Signed at St. Louis, Missouri, this 14th day of June, 1910.

p WILLIAM H. BURK. Witnesses: Y ALFRED E. Linn m, G. A. PENNINGTON.

Images