US2610708A

US2610708A - Building framework

Info

Publication number: US2610708A
Application number: US677223A
Authority: US
Inventors: Harold S Shannon
Original assignee: National Steel Corp
Current assignee: National Steel Corp
Priority date: 1946-06-17
Filing date: 1946-06-17
Publication date: 1952-09-16
Anticipated expiration: 1969-09-16

Description

p 1952 H. s. SHANNON BUILDING FRAMEWORK Filed June 17, 1946 all IN V EN TOR. a SWIM/0M Patented Sept. 16, 1952 NITED STATES PATENT OFFICE Delaware,

National Steel Corporation, a corporation of Application June l'i, 194 Serial No. 677,223

I 7 Claims.

This invention relates generally to building construction and more particularly to column .base plates. 1

I In certain types of steel building construction where grade beam sections are connected at their ends to columns, it has been the practiceto provide each of the columnswith a large, base plate for added supporting area and for supporting adjacent end portions of the grade beam sections and endportions of joists. These columns are usually factory fabricated with the base plate secured thereto, as by weldingthe column seating centrally of the baseplate. In order to employ satisfactorily this type of column and integral base throughout a building construction, that is,,at building corners, at intermediate positions and also at columnswhere floor joists connect thereto or to the base, it has been the prac tice to connect the ends of the beams andalso the ends of the joists to, the columns by-so called beam enders or connector members. ,With this arrangement of the framework members, it was usually the practice to align theggrade beams with the columns so that adjacent endsof,v the beam sections were respectively in, opposedrrelation to opposite sides of thecolumns in order to have sufficient room or clearance for the extension of a joist to the inwardly facing side of the column for connection thereto. 'I'hese beam enders or connector members are usually separate pieces welded or otherwise secured to the endsofthe beam proper andare of a form to present an end portion which may be secured flat against an opposed side of acolumn; While this structure is satisfactory from thestandpoint ofstructural strength and rigidity, the use of beam endersor connector members unduly. compllcates the construction in additionto entailing added cost of manufacture and erection. An alternative to the above mentioned aligned arrangement of grade beams and columns comprises positioning the grade beam inwardly of the columns for connection to the inner sides thereof. To do this, in the past, either required an unduly large base plate to provide for seating of joist end portions, or required the prefabrication of columns arranged in different positions on the base plates for different locations in the building, either of which is objectionable.

Accordingly, it is an object of the present invention to provide a new and improved arrangement and connection of columns, base plates and grade beams in which need of the above mentioned beam enders or connector members is eliminated without detrimentally affecting the building structure. Y

nection between building columns, grade beams and base plates so that columns may seat in different locations on thebase plates to fulfill needs of framework connections at different columns using like base plates throughout the building.

' Another object of the invention is to provide a new and improved base plate which, although anchored against shifting and although directly supporting adjacent framework members, is rotatably adjustable onthe building foundation to aid alignment of screw holes in the plate with corresponding screw holes in the adjacent framework members.

Another object of the invention is to decrease manufacturing and erection costs of factory fabricated structures of the i above mentioned character. v

Other objects of the invention will become'apparent from the following detailed description,

taken in connection with accompanying drawingsin which: Figure 1 is a fragmentary plan view of a building construction embodyingfeatures of the-present invention; v

Figure 2 is a fragmentary isometric ,view of substantially the same structure as is shown in Figure 1;

Y Figure 3 is a'fragmentary isometric view of a corner of the building to show certain details of construction; a

Figure 4 is a plan view of a column base plate shown removed from the building construction; and d Figure 5 is a fragmentary side view of the building structure showing certain details of construction. 4

In the drawings, which illustrate a preferred embodiment of the present invention, the buildingconstruction shown comprises,in general, a foundation l0, side grade beams l l, end grade beams I2, joists l3, spaced columns l4, l5 and I6 and individual column base plates Il. The column base plates [1 seat on the foundation "I in spaced relation, presenting upper seating surfaces for the columns, grade beams and joists,

, the grade beams being located inwardly of the shown in the drawing. The joists I3 extend between opposite pairs of intermediate columns I5 in parallel relation to the end wall grade beams I2.

The side and end grade beams I I, I2, each comprise a number of end to end aligned channel sections I8 eachhaving a Web I9, alower seating flange and an upper supporting flange 2I. These channel sections I8 are arranged so that end portions of the webs I9 position against the inner sides of the columns I4, I5 and I6 with the grade beam flanges 20, 2 I directed inwardly qfthe building. The joists I3 may each comprise, a pair of channel members 23 which maybe welded together back to back to present large upper seating surface for flooring (not shown).

trally located apertures 3|, an anchor bolt 32 is inserted and pressed into the still soft concrete As shown, the columns I4, I5 and I6 ,are preferably four-sided, hollow members constructedof metallic plates 25 reinforced and secured together by corner angle members 28 which may be welded thereto. At the building corner, a pair of angle brackets 21 may be provided to connect the grade beams II and I2 to the corner column I4. Each of these angle brackets 21 has a leg 28 thereof seating fiat against the outer surface of agrade beam web and has another leg, as at 29, seating against an adjacent pairof the column angle members 26. Self-threading screws 30 or other suitable securing means may be used :to secure the angle brackets 21 to the grade beam webs and to the column angle members 25. At the columns I5 and I 6 the grade beams are secured directly-to the angle members thereof, preferably by the selfthreading screws 36, the grade beam webs and the angle members having aligning apertures to receive the screws.

The column base plate I! is preferably square, as shown in Figure 4 having a centrally located aperture 3| therethrough to receive an anchor bolt 32. The anchor bolt 32 is partially embedded in the concrete foundation having a head seating against the upper surface of the base plate. This anchor bolt 32 locates the plate I! and holds it against shifting on the foundation, but permits the plate to be movably adjustable thereabout for a purpose hereinafter described. f

The base plate II is of a size to present a large upper supporting surface for a column and asso ciated grade beams and joists, the areaof thebase plate preferably being four times that of the lower end of the column. For convenience of description and definition, the area of the plate I! maybe divided into four equalparts or quadrants as represented by the dot and dash axes lines a-and b,

Figure 4. In this plate II is provided a plurality of apertures 35, preferably eight in number, equally spaced from the center, anchor-bolt'hole 3|. The apertures 35 are provided to receive securing means, such as self-threading screws .35 for securing ends of the grade beams II, I2 and joists I3 to the base plate I I. Each of the grade beams, adjacent its end is provided with an aperture in the lower flange thereof to align with one of the apertures 35 in the base plate. Also, in

the oppositely directed lower flanges of the joists I3, apertures are provided near the joist ends to align with other of the apertures 35 in the base plate II. The number and arrangement of the apertures 35 in the base plate are such that a number of like base plates will fulfil all require- 1 ments of different structural connections at corner columns, intermediate columns and at columns where joists are located, etc. Although a lesser number than eight of the apertures 35 may be adequate in the base plate H, the provision of until theancl or bolt head seats against the upper surface of the plate. After the concrete foundation ID has set the grade beams II, I2 and the columns I4, I-.5 and I6 may be assembled thereon. At the corner column I4, the side and end grade beam sections I8 at right angles to each other have end portions thereof seating on the base plate I! in the'same and what may be called the inner corner quadrant with the column I4 seating on and occupying the diagonally opposite or outer corner quadrant of the base plate. These ends of thegrade beam sections I8 are connected -to the column ll by the-angle'brackets 21 which are secured to the grade beam webs I9 and to the column angle members 26 by the-self-threading screws 3U. The base'plate IIis indirectly connected to the column through the grade beam sections I8 and through the corner brackets 21 by securing the grade beam lower flanges 20 to-the plate IT by the self -thre'ading screws 36. By this indirect connection between the column I4 and its base plate II, the base plate maybe adjustably moved about its anchor bolt '32 to align the pair of holes 35 in-the inner corner quadrant of the base plate with the screwholes in the lower flanges 20 of the grade beams II, It. For this adjustment, any heavy tool may beused to strike the edge of'the plate to move it about the anchor bolt to effect aligning of the screw apertures. At the intermediate post I5, the aligned grade beam sections I8 seat on the'base plate I! with their ends in spaced opposed relations, the grade beam sections being secured at their webs by-the-selfthreading screws 36 to the inner corner members 28 of the column. fI-hisintermediate column I6, 'as-shownin Figure 1,-unlike column I4 -is located on its base plate II in a position occupying half of each of the outer quadrants of the base plate I! in alignment with the end of the joist I3 and thegrade beam sections I8 and joist I3 are secured at their lower flanges-to the baseplateby the self-threading screws36. This baseplate I! at theintermediate column I5 may, like the corner base plate, be tapped on its edge with aheavy tool'to move it about its anchor bolt 32 to effect an alignment of the screw holes in the plate with the corresponding screw holes in the grade beam and joist lower flanges. At the column Hi there is a different arrangement of grade beam members as may occur, for example, where there is an offset in the exterior wall of the building. ;In this arrangement, the column I6 seats on its base I! in the same relation or in the same quadrant as the corner column I4 seats on its base plate, as shown in Eigure 1. An end portion of the side grade beam section I8 seats on the base plate I! of column I6 and is secured at its lower flange to the base plate by the self-threading screws 36. Also, the grade beam section I8 is secured at its web by the self -th reading screws 3:; to the column, thus connecting the base plate and column together. At right angles to the side grade beam is thegrade beam section I2 having an end portion seating on the base plate and being secured thereto and to the column lli by the self-threading screws 36. In alignment with the side grade beam section l8, there is a joist I3 having an end portion seating on the base plate H at column l6 and secured at its lower flange by self-threading screws 36 to the base plate. It will be seen that the column I6 occupies one of the quadrants of the plate, that grade beam section 18 seats in an adjacent quadrant wherein one of the pair of apertures 35 will align with the screw aperture in the lower flange of the grade beam section I8. In the diagonally oppositequadrant, the grade beam section I2 at column l6 seats with the screw aperture in its lower fiange'aligning with one of the pair of apertures located in this quadrant. Partially occupying the remaining two adjacent quadrants of the base plate is the end of the joist l3 at the column I5. Each flange of this joist, like the joist at column [5, has an aperture to align with'one of the pairs of apertures 35- in these quadrants of the base plate and receive the screws for securing the parts together.

From the foregoing description, it will now be appreciated that I have provided for new and improved arrangement and connection of grade beams, base plates and columns in a building construction. Among other advantages, the present arrangement and connection of the above structure permit the grade beams to be secured directly to the columns, thus eliminating beam end connectors. Furthermore, the present column and base plate make it possible for the column to be located in different positions on its plate in accordance with the exigencies of the particular grade beam and joist arrangement at a column. Also, mass production of the columns and base plates is not detrimentally aifected but instead the welding of them together is rendered unnecessary. In addition, the indirect connecting of the base plates to their columns makes it possible to adjust the base plates about their center anchor bolts to insure aligning of the screw holes in the plates with the corresponding screw holes in the grade beam and joists.

I claim:

1. In a building structure, the combination comprising a foundation, a base plate supported on the foundation, the base plate having a centrally located aperture and a plurality of other apertures, a vertical column having a lower end portion seating on the base plate, a plurality of grade beams each having an end portion with an aperture seating on the base plate, each of the grade beam apertures :being in alignment with a respective one of the other base plate apertures, anchor means extending from the foundation up through the centrally located aperture in the base plate, the other base plate apertures encircling the centrally located aperture with a pair of the other apertures being located in each quadrant of the base plate in a symmetrical arrangement about a centrally located aperture, whereby upon misalignment of the apertures of the grade beams and base plate rotation of the base plate about the anchor means to align any one of the other base plate apertures with a grade beam aperture also aligns a base plate aperture with each of the grade beam apertures, securing means in the aligned base plate and grade beam apertures securing together the base plate and grade beams,

6. which the means connecting the grade beams the column includes means connecting each of the grade beam end portions to a respective side of the vertical column and in which the base plate is connected to the column only through the grade beams. 3. The :building structure claimedin claim 1 in which the lower end portion of a column seating on the base plate is disposed-in an area of the base plate exclusive of the centrally located ape'rture.

4. The building structure claimed in claim 1 in which the lower end portion of the columnseating on the base plate is disposed in an area not part of a quadrant in which there is disposed an end portion of'a grade beam. 7 f- I 5. In a building structure, the combination comprising a foundation, a base plate supported on the foundation having a centrally located;ap'- erture and havinga plurality of other apertures encircling the centrally located aperture with" a and means connecting the grade beams to. the

column.

2. The building structure claimed in claim 1 in pair of apertures located in each quadrant of the base plate in'a symmetrical arrangement about the centrally located aperture, a first grade beam having an end, portion seating on the base plate, a second grade beam having anend portionseating on the base plate, the grade beams being disposed at to each other and each radebe'am end portion having an aperturealigned with a respective base plate aperture, the base plate apertures aligned with the grade beam" apertures being located in the. same quadrant avertical column having a' lower end portion seating on the base plate in a quadrant outside of and not adjacent the quadrant in which the grade beam end portions are seated, anchor means extending from the foundation up through the centrally located aperture whereby upon misalignment of the apertures of the grade beams and base plate rotation of the base plate about the anchor means to align a respective aperture in any one of the base plate quadrants with an aperture in the end portion of the first grade beam also aligns the other aperture in the same quadrant with the aperture in the end portion of the second grade beam, and means connecting together the column, grade beams and base plate including securing means in the aligned base plate and grade beam apertures securing the grade beams to the base plate.

6. In a ,.building structure, the combination aperture and having a plurality of apertures encircling the centrally located aperture with a pair of apertures located in each quadrant of the base plate in a symmetrical arrangement around the centrally located aperture, a first grade beam having an end portion seating on the base plate in a first quadrant, the end portion of the first grade beam having an aperture aligned with a base plate aperture in a first one of the quadrants with securing means in the aligned apertures securing the grade beam to the base plate, a second grade beam having an end portion seating on the base plate, said last mentioned end portion having an aperture aligned with a base plate aperture in a second quadrant adjacent the first quadrant with securing means received in the aligned apertures securing the second grade beam to the base plate, the first and second grade beams being aligned, anchor means extending on the foundation through the centrally located aperture base plate about the anchor means to align a respective .one of the base plate apertures :in any quadrant with the aperture in the end portion of the V-first grade beam also aligns the respective base plate aperture in the second adjacent quadrant with the aperture in the end portion of the second grade beam, a vertical column having a lower end portion seating on the base plate inan area outside of said first and second adjacent quadranta'and means securing at least one of the grade beam end portions to the column.

7. In a building structure the combination comprising av foundation, a base plate supported on the foundation having a centrally located aperture and having a plurality of apertures encircling the centrally located aperture With a pair of apertures located in each of the four quadrants of the base plate in a symmetrical ar- Iangement about the centrally located aperture, afirst grade beam having an end portion seating on the base plate, the end portion. of the first grade beam having an aperture aligned with a base plate aperture in a first one of the quadrants with securing means in the aligned apertures securing the beam to the base plate, a second grade beam having an end portion seating on the base plate, the end portion of the second grade beam having an aperture aligned with a base plate aperture in a second quadrant with securing means received in the aligned aperture securing the second grade beam to the base plate, a third grade beam having an end portion seating on the base plate, said last mentioned end portion having an aperture aligned with a .base plate aperture in a thirdone of the quadrants with securing means received. in ',the aligned apertures securing the third grade beam to'the base plate, anchor means extending from the foundation through the centrally located aperture whereby upon misalignment of the apertures of the grade beams and base plate rotation of the base plate about the anchor means to align a respective one of the base plate apertures with the aperture of the first grade beam also aligns a respective base plate aperture with each of the other grade beam apertures, a vertical column having a lower end portion seating on the base plate in an area located in the fourth quadrant of the base plate, and means connecting the end portion of at least one of the grade .beams to the column.

I HAROLD S. SHANNON.

REFERENCES CITED The following-references are of record in the file of this patent:

UNITED STATES PATENTS"