US3653629A

US3653629A - Building corner form structure

Info

Publication number: US3653629A
Application number: US807337A
Authority: US
Inventors: David H Keyston
Original assignee: ANZA PACIFIC CORP
Current assignee: ANZA PACIFIC CORP
Priority date: 1969-03-14
Filing date: 1969-03-14
Publication date: 1972-04-04
Anticipated expiration: 1989-04-04

Abstract

A reusable building form structure defined by opposed, rigid, preformed, self-supporting form members, and a method of utilizing the same with previously erected building wall panels, to produce a corner column defined by settable construction material introduced into the space delimited by the wall panels and the corner form structure. Improved alignment means are provided on adjacent form members to insure proper interengagement of abutting form members vertically arranged endto-end to permit formation of corner columns of varying heights.

Description

United States Patent Keyston 154] BUILDING CORNER FORM STRUCTURE [72] Inventor: David H. Keyston, Burlingame, Calif.

[73] Assignee: Anza Pacific Corporation, Burlingame,

Calif.

[22] Filed: Mar. 14, 1969 [21] Appl.No.: 807,337

[52 user. ..249/l9,249/l94,25/l31CF s11 lnt.Cl ..E04gll/00 5s FieldoiSearch ..249/l8,l9,l92,194,l89, 249/l95,2l0,2ll,26,27,28,29,30,3l,32,48, I88,189,l92,85,90,191,168,219R,219W,47;

[56] References Cited UNITED STATES PATENTS 1,752,552 4/1930 Estes ..164/385 2,475,890 7/1949 Hamilton" ....25/13l P 2,548,935 4/1951 Billner ...249/27 X 3,182,948 5/1965 Lawrence ..249/192 X [451 Apr. 4, 1972 910,883 1/1909 Turkington ..249/ 192 X 2,739,362 3/1956 Young ...249/166 X 2,788,560 4/1957 De Boisblanc.... .....249/27 X 2,951,520 9/1960 La Bar ..249/19 3,279,738 10/1966 Meyers... ..249/25 3,371,904 3/1968 Low ...249/219 X 3,447,771 6/1969 Trimmer ..249/192 Primary Examiner-J. Spencer Overholser Assistant Examiner-John S. Brown Attorney-Flehr, Hohbach, Test, Albritton 8/. Herbert [S 7] ABSTRACT A reusable building form structure defined by opposed, rigid, preformed, self-supporting form members, and a method of utilizing the same with previously erected building wall panels, to produce a corner column defined by settable construction material introduced into the space delimited by the wall panels and the corner form structure. Improved alignment means are provided on adjacent form members to insure proper interengagement of abutting form members vertically arranged end-to-end to permit formation of corner columns of varying heights.

13 Claims, 7 Drawing Figures BUILDING CORNER FORM STRUCTURE CROSS REFERENCE TO CO-PENDING APPLICATION The present application presents a form structure and building construction method which includes modifications to and certain improvements over the disclosure of pending Keyston application Ser. No. 662,265, filed Aug. 8, 1967, entitled Building Form Structure now U.S. Pat. No. 3,547,395, dated Dec. 15,1970.

BACKGROUND OF THE INVENTION 1. Field of the Invention I This invention relates generally to the construction field, and is specifically directed to an improved construction structure and procedure for filling in the space between two angularly oriented spaced building wall panels which have been positioned to provide a corner portion of a wall of a building being erected. The gap between adjacent opposing edge surfaces of the angularly oriented building wall panels is filled in with a settable construction material, such as concrete, to provide a corner column of the building wall.

This invention is particularly directed to a reusable building form structure, and its method of use, employed in defining the inner and outer limits of the space between angularly oriented building wall panels into which the settable construction material is to be inserted. The present form structure is comprised of cooperable form member components which are rigid and self-supporting so that they may be repeatedly used in the construction of numerous building walls, or other related and analogous wall structures.

The form structure disclosed herein has particular utility in conjunction with the erection of tilt-up wall buildings in which concrete or like wall panels are formed in horizontal position on the ground and are thereafter tilted into operative position in the vertical orientation with adjacent wall panels cooperating to define the corner of a building when the space therebetween is filled in by a corner column defined by settable construction material introduced into such space. The present form structure has utility, however, in erecting any building wall or like construction in which it is desired or required to fill in a gap between adjacent opposed edge surfaces of spaced wall or like panels.

This invention further relates to the field of building form structures which are alignable with similar form structures, so that corner columns of varying heights may be produced in accordance with the heights of the building wall panels in conjunction with which such form structures are used. To that end, form members of varying lengths are provided to permit incremental build-up of a single operable form structure as required to meet a particular building need.

Description of the Prior Art It has been generally known in the construction art heretofore to utilize building forms to place definite limits on the space which exists between opposed edge surfaces of building wall panels erected by the tilt-up technique. Heretofore, multi-piece wooden form structures were employed for that purpose which had to be tailored to meet the requirements of a particular construction project. Such wooden form structures were not repeatedly reusable in the construction of nu merous building walls because the same were substantially damaged during separation from the wall panels engaged thereby during use. To adapt such wooden form structures for reuse required substantial repair thereof which generally made any attempted reuse uneconomical.

With prior known form structures, it was customary to unite the wooden components thereof together at the site of the construction job. After such components had served their intended function, such components were largely destroyed or appreciably damaged during removal thereof from the resulting building wall comer. This common prior art practice was extremely expensive because of the skilled labor required to removal. Such prior known form structures required many components, including numerous wooden parts and various types of connectors to retain the wooden parts securely together during use thereof.

The pending application above identified presents a reusable form structure which rectifies many of the shortcomings of prior wooden forms. However, the form structure of the pending application is designed primarily for use with aligned wall panels, rather than angularly oriented wall panels which define a building corner.

With the improved self-supporting form structure of the present invention, a minimum number of components are required, both in defining the comer form structure and in maintaining the components of the form structure together during use thereof. Furthermore, corner columns of varying heights may be readily formed merely by joining together in end-to-end relationship form members of the present invention to the desired height. In that regard, alignment means are provided integral with respective form members to facilitate such end-to-end interconnection.

The forms of the structure of this invention, in addition to the specific advantages characteristic of their specialized construction, also possess the advantages set out in the aforementioned pending application.

SUMMARY OF THE INVENTION The present invention relates to a sturdy reusable form structure for use in constructing a corner of a building. Such form structure is defined by opposed, elongated, preformed, rigid and self-supporting form members which are to be cooperably positioned in engagement with inner and outer surfaces of two spaced angularly oriented building wall panels to bridge the gap therebetween so that a settable construction material, such as concrete, may be introduced to fill up such space and form a comer column therein.

The invention also includes the provision of varied length form members of similar configuration which are to be positioned in end-to-end abutting relationship so that a corner column of pre-selected height may be constructed in a given building wall structure. The invention relates to an improved building method utilizing such form structures.

Furthermore, the invention relates to improved means for properly aligning form members in end-to-end abutting relationship so that building wall columns of varying heights may be produced.

The form structure of this invention requires only two major form components to erect a corner column of minimum height, plus associated means for maintaining such fonns in position during use. However, additional form members cooperable with the form members utilized to form a column of minimum height also are provided so that comer column of selectively varying heights may be produced.

The form members of this invention are appropriately reinforced to provide the strength required to permit their repeated reuse and to withstand the substantial pressures to which they are subjected when the space defined therebetween is filled with heavy settable construction material.

From the foregoing, it should be understood that objects of this invention include; the provision of an improved building form structure which is to be employed to bridge the space between angularly oriented spaced building wall panels at the comer of a building under construction; the provision of such a form structure which is repeatedly reusable without requiring repairs; the provision of a corner form structure defined by members for facilitating end-to-end interengagement between form members of similar configuration to insure effective interconnection therebetween; and the provision of an im proved building corner construction method. These and other objects of this invention will become apparent from a study of the following disclosure in which reference is directed to the attached drawings.

DESCRIPTION OF THE DRAWINGS FIG. 1 is an elevational view illustrating one side of a form structure of this invention bridging the gap between angularly oriented building wall panels at the corner of a building under construction.

FIG. 2 is a horizontal sectional view through the building corner under construction taken in the plane of line 2-2 of FIG. 1.

FIG. 3 is a vertical sectional view through the building corner under construction taken in the plane of line 33 of FIG. 2.

FIG. 4 is an exploded view of the alignment means provided for interconnecting similarly contoured form members in endto-end engagement.

FIG. 5 is an elevational view of a portion of a modified form structure for use in forming a building corner column.

FIG. 6 is a plan view of the form structure of FIG. 5 taken in the plane of line 6-6 ofFIG. 5.

FIG. 7 is a sectional view through a further embodiment of a previously disclosed building form structure illustrating the novel alignment means of this invention provide in conjunction therewith.

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the aforementioned pending application Ser. No. 662,265, an improved and highly effective form structure is disclosed which is designed primarily for use in conjunction with constructing a building column between two laterally spaced building wall panels which are generally aligned in coplanar relationship. The present invention is a modification of the concept disclosed in such application and relates specifically to the formation of a building column at a corner of a building between two angularly oriented building wall panels. While in the embodiment disclosed herein such building panels are arranged generally at right angles to each other, it should be understood that the concept of this invention also is utilizable in forming columns between angularly oriented panels which are other than normal with respect to each other.

The present invention further discloses improvements over the form structure and procedure disclosed in the aforementioned application in that improved means for aligning and maintaining form members together in end-to-end abutting relationship are provided to insure a smooth surface on the wall column being formed in the area of juncture between the abutting form members.

As described hereinafter, a manner of utilization of the corner form structure of this invention is described with particular reference to the construction of a tilt-up wall building in which wall panels of concrete or other suitable construction material are formed on the ground in horizontal orientation and are thereafter tilted upright to the vertical orientation to define a corner portion therebetween. However, it should be understood that this invention also is usable in conjunction with other construction methods in which a space between two building wall panels or similar panels is to be filled in by a settable material to provide a continuous wall or like structure defined by fill-in column between two adjacent panels. For purposes of illustration, reference is directed hereinafter to utilization of the invention in conjunction with the tilt-up wall construction technique.

As seen in FIGS. 1 and 2, two preformed building wall panels, designed l and 2, are positioned to extend upwardly from supporting base 3 in known fashion. The base and the wall panels may be formed from any suitable construction material, of which concrete is typical. The wall panels are spaced from each other as erected and are angularly oriented relative to each other so that extensions thereof would form a comer of the building being constructed.

Opposed edge surfaces 4 and 6 of the respective wall panels together delimit one dimension of a vertically extending gap or space which is to be filled by a settable construction material to provide a corner column so that a continuous corner structure is produced which is capable of supporting the roof loads to be applied thereto. While the settable material is being introduced into the space between the wall panels, the panels are maintained in proper vertical orientation angularly related to each other by suitable braces (not shown) in the manner well known in the tilt-up building art.

In most construction situations, it is preferred to fill in the space between the wall panels 1 and 2 to a degree greater than the respective thicknesses of the wall panels so that an enlarged building column is produced at the corner between the opposed edge surfaces of the wall panels. Such a building column, designated 7 in FIG. 2, fills the aforementioned space between the building wall panels. As described hereinafter, column 7 preferably is reinforced and keyed to the wall panels to provide a strong integral corner wall structure.

To permit formation of the corner column 7 between the wall panel opposed edge surfaces, means are provided to delimit the other dimension of the space between the wall panels into which the settable construction material is introducible and to retain the contour of such settable material while the same is hardening. Such means in this invention is defined by an improved comer building form structure comprised of two principal reusable components for producing a comer column of predetermined height.

For a given column height, the principal components of the embodiment of the building form structure shown in FIGS. 1-3 are defined by two elongated, preformed, rigid, and selfsupporting inner and outer integral channel shaped form members, designated 8 and 9 respectively. Such form members, when positioned to receive settable construction material therebetween, are engaged with the respective inner and outer surfaces 11 and 12 of the spaced wall panels as seen best in FIG. 2.

In the embodiment illustrated in FIGS. 1 through 3, the form structure is designed so that the corner wall column 7 is formed between the wall panels 1 and 2 with the outer surfaces of the column being substantially coplanar with the outer surfaces 12 of the respective wall panels. However, as will be described hereinafter, alternative constructions and configurations may be imparted to the corner column by utilizing form members of contours different from the essentially V-shaped cross-sectional contour of the outer form of the embodiment seen in FIG. 2.

It should further be understood that the inner form may be constructed so that a resulting comer column is defined by inner surfaces which converge and meet at an internal corner, such inner column surfaces being generally coplanar with the inner surfaces 11 of the building wall panels 1 and 2 and meeting at a vertical inner edge which turns the length of the column. Similarly, other modifications to the basic concept specifically illustrated herein are contemplated so that columns of varying contours or configurations are producible in accordance with the particular contours of the form members employed.

Before specifically describing details of the preferred embodiments, reference is directed to FIG. 1 which illustrates utilization of the subject form structure in interconnected increments so that a corner column of a height greater than the height of a minimum length form may be produced in accordance with the vertical height of the building wall panels being joined by the comer column. In that regard, it has been found that utilization of four principal form lengths satisfy most construction needs. To that end, forms in increments of 13 feet, 4 feet, 2 feet, and 1 foot have been found to combine well to meet most common construction requirements. However, for special projects, and to add further versatility to the construction system of this invention, forms in 18 foot lengths also may be utilized separately or in conjunction with other shorter forms.

By way of example, the subject structure shown in FIG. 1 comprises a form 24 feet high, for use in erecting high ceiling industrial type warehouse buildings and the like, is illustrated which is produced from five form members designated 9, 13, 14, 16 and 17, positioned and interconnected in end-to-end vertical abutting relationship. Alignment means, for securely interconnecting the separate form members, are described hereinafter.

It should also be understood that the inner corner form 8 similarly is designed for end-to-end interengagement with identically contoured inner forms in incremental lengths of the type just described.

Inner form 8 of the embodiment of FIGS. 2 and 3 comprises a base wall 21 which is generally flat and has angular extensions 22 and 23 integral therewith and angularly related thereto in accordance with the angular orientation between the building wall panels 1 and 2. In the embodiment shown in FIG. 2 such extensions 22 and 23 are generally normal to each other because the wall panels 1 and 2 extend generally normal to each other.

The base wall extensions 22 and 23 terminate in vertically extending outwardly directed

flanges

24 and 26 which extend generally normal to the respective planes of the base wall extensions. The base wall extensions are in secure surface-tosurface contact with the inner surfaces 11 of the building wall panels 1 and 2 and such extensions are spaced from each other by the base wall a distance sufficient to permit the base wall to completely bridge the gap between the edges 4 and 6 of the building wall panels. When viewed in plan, the base wall extensions diverge outwardly relative to each other and to the plane of the base wall.

To provide seats for means for securing the inner and outer forms of the form structure together, as described hereinafter, an to reinforce and rigidify inner form 8, a series of vertically spaced apertured reinforcing ribs 27 are formed integral with the base wall as seen in FIGS. 2 and 3. The ribs are defined by generally U-shaped channels each of which is integrally secured to the base wall in suitable fashion, such as by welding. The spacing between adjacent ribs on the base wall of form 8 corresponds to the spacing of similar ribs provided on the form 9 as described hereinafter.

Outer form 9 is defined by two angularly oriented

side walls

31 and 32 which, in theembodiment illustrated in FIG. 2, extend generally at right angles relative to each other and converge to meet at a vertically extending edge 33.'That is, as seen from FIG. 2, when viewed in plan the

side walls

31 and 32 of outer form 9 converge outwardly of the form structure and meet at vertically extending edge 33 where they are integrally joined with each other along such edge. The

side walls

31 and 32 are of sufficient lateral extent that generally coplanar extensions thereof, designated 34 and 36 respectively, are engageable with the outer surfaces 12 of the building wall panels 1 and 2. Such wall extensions terminate in outwardly directed vertically extending flanges 37 and 38 which project generally normal to the respective planes of the side wall extensions 34 and 36.

The respective side walls of form 9 are provided with vertically spaced apertured reinforcing ribs, designated 41 and 42 respectively, each of which preferably is of U-shaped channel configuration corresponding to the rib construction 27 of the inner form 8.

Ribs

41 and 42 terminate in generally overlapping relationship outwardly of the vertical edge 33 defined by

walls

31 and 32. To provide a seat for the form securing means to be described, a generally U-shaped bracket 43 is positioned over and secured to each pair of

ribs

41 and 42, as best seen in FIG. 2.

In the embodiment illustrated, the form securing means comprises bolt and nut assemblies, defined by tapered bolts 44 each having a removable nut 46 on one end thereof and an enlarged head or another removable nut 47 on the other end thereof as seen in FIG. 3. The respective enlargements on the tapered bolts are engaged with the outer surfaces of the respective brackets 43 of the outer form 9 and the respective ribs 27 of the inner form 8 so that upon tightening of the nuts on the threaded ends of the tapered bolts, the forms are drawn together into secure engagement with the inner and outer surfaces of the building wall panels.

Referring to FIG. 1, it will be noted that reinforcing

ribs

41 and 42 are vertically spaced from each other in a predetermined arrangement in which such ribs are more closely spaced adjacent the lower end of the form then adjacent its upper end. That is, in the embodiment illustrated, five such ribs are spaced from each other on approximately 1' 5%" centers, while thereabove three such ribs are spaced from each other on approximately 2 centers. Such spacing is provided so that bolt and nut assemblies are more closely spaced adjacent the lower end of the form structure where the pressures of the settable construction material to be introduced therebetween is the greatest.

With the shorter 4 foot forms 13 and 14 positioned end-toend with elongated form 9, two spaced ribs are provided, generally centrally thereof. With the shorter 2 foot and 1 foot forms 16 and 17 only one such reinforcing rib arrangement is required.

It will be understood, of course, that the inner forms utilize a rib spacing corresponding to that just described for the outer forms so that the tapered bolts 44 may be extended through aligned ribs in the respective forms.

When the inner and outer forms are positioned as seen in FIGS. 1 and 2, the space defined therebetween is ready to receive settable construction material therein. While various arrangements may be employed for filling such space with settable construction material, concrete pumped through conventional known nozzle and hose apparatus to provide column 7 may be employed. The inner and outer forms, and any extensions utilized therewith in the manner seen in FIG. 1, are maintained in place until the corner column has completely hardened, following which the respective nut and bolt assemblies are removed and the forms are separated from the column for cleaning and subsequent reuse as desired. Lower form 9 and any extensions to be connected therewith normally would be interconnected on the ground and positioned in place as an integral unit. However, in separating the form structure from the corner column, it has been found frequently preferable to separate upper extension form components from lower form components as individual units rather then separating the entire form structure as a unit from the completed column.

As noted previously, referring to FIG. 2, it is preferred that the corner column 7 is tied in with, or keyed to, wall panels 1 and 2. Such keying together is effected by a suitable reinforcing structure, generally designated 51, which is positioned in the space between the wall panels prior to placing the form structure in place to cooperate with reinforcing means formed in the wall panels. Such reinforcing structure includes a series of vertical reinforcing rods 52 positioned in a generally rectangular pattern which are coupled with a series of spaced horizontal reinforcing rods 53, each of which is bent into a generally rectangular configuration around the vertical rods 52. A series of such horizontal rods 53 are provided at vertically spaced locations within the column in accordance with spacing of reinforcing means provided in the wall panels themselves.

In that regard, a series of vertically spaced horizontally extending reinforcing rods 54 and 56 are positioned in the wall panels when they are manufactured in known fashion. Projecting ends 57 and 58 of such reinforcing rods project into the space between the wall panels and are bent therein to interfit with reinforcing structure 51. Thus, when column 7 is poured in place, the reinforcing structure 51 and the wall reinforcing rods 54 and 56 couple the column and the wall panels together into a strong unitary assembly.

To further assist in keying together column 7 with the wall panels, the opposed edge surfaces 4 and 6 of the wall panels preferably are provided with stepped contours as seen in FIG. 2. Column 7 interlocks with such steps when it is poured in lace.

p To enhance the appearance of the resulting corner structure of the building wall when form 9 is removed from engagement with the outer surface thereof, a pair of generally triangular wooden or like strips 61 are positioned in alignment with the intended outer lines of juncture between the edge surfaces of the wall panels 1 and 2 and the column 7. Such strips are positioned in place when outer form 9 is located prior to pouring of the concrete in the space between the forms. Following hardening of column 7, the strips are removed from the wall after removal of form 9, thus leaving generally triangular indentations or grooves running the full extent of the wall and column which are visible from the outer side of the wall. Such grooves produce an appearance of regularity between the wall panels and the column which might not otherwise exist if the wall panels and the column were directly joined at the outer surface without utilizing such strips.

To insure the necessary rigidity which permits repeated reuse of the forms 8 and 9 and any interconnectable extensions thereof, it has been found that the same should be formed from a sturdy material, such as steel. However, it is contemplated that other materials of lesser weight then steel which possess sufficient strength, such as aluminum alloys or rigid plastics, may be employed if preferred. Three-sixteenth inch steel plate has been found particularly effective for manufacture of the form structure illustrated.

To permit similar form members to be operatively and securely interconnected in end-to-end abutting relationship, alignment means, generally designated 62, is provided on cooperable upper and lower ends of adjacent form members as best seen in FIG. 4. Such alignment means comprise flange structures designated 63 and 64 respectively provided on adjacent ends of the upper and lower form members to be interconnected.

Flange structure 63 comprises an angle bracket welded to the lower end of upper form 13 including an outwardly directed flange 66 which projects generally normal to the plane of the wall of the form to which it is connected. The lower surface of flange 66 is coplanar with the lower edge of form 13. A pair of laterally spaced apertures 67 and 68 are provided in flange 66 for the purpose to be described.

Flange 64 is similarly defined by an angle bracket including an outwardly directed flange which projects generally normal to the plane of the wall of lower form 9 to which it is attached by welding. The upper surface of flange 69 is coplanar with the upper edge of form 9.

Projecting upwardly from flange 69 in alignment with aperture 67 in upper flange 66 is an alignment pin 71, which preferably has a tapered end to facilitate its insertion into such aperture 67. Dimensional tolerances between pin 71 an aperture 67 are closely maintained to insure a snug sliding fit therebetween which insures proper alignment of the inner surfaces of the cooperating

forms

9 and 13 being interconnected. To effect such interconnection, in separable fashion, a conventional bolt 72 is extended through an opening 73 provided in flange 69 adjacent pin 71 which is aligned with the other aperture 68 in flange 66 when the form members are abutted end-to-end. A conventional nut fastener 74 is threadedly engaged on bolt 72 to hold the alignment means in operative interconnection.

The alignment means 62 on form 9 preferably are provided on each of the

side walls

31 and 32 thereof as seen in FIG. 2. However, additional alignment means may be employed if required at other locations on the fonn structure, depending upon its particular configuration. In that connection, it has been found that only a single alignment means of the type described is needed on the inner form 8, preferably locate centrally of the base wall 21 thereof.

Similar alignment means 62 maybe utilized on building forms other than corner form structures. As illustrated in FIG. 7, a wall construction utilizing a form structure of the type illustrated and described in aforementioned application Ser. No. 662,265 is positioned to form a building column 7 between longitudinally aligned wall panels 1 and 2. The inner form 76 is provided with a single alignment means 62 intermediate its base wall while outer form 77 is provided with one such alignment means 62 positioned on each of the opposed tapered side walls thereof.

Referring now to FIGS. 5 and 6, a modified embodiment for forming a corner column between the adjacent edges 4 and 6 of building wall panels 1 and 2 is illustrated. Such form structure is constructed to define a corner column 81 which projects beyond the outer surfaces 12 of the building wall panels. To that end, the outer channel shaped form 82 is defined by two separable but integrally

interconnected form sections

83 and 84, each of which is generally V-shaped in cross-section and each of which is defined by a pair of integrally connected

side walls

86 and 87. The walls 86 generally form extensions of walls 87 and such walls 86 converge relative to each other in an inward direction towards the wall panels 1 and 2 with which the form structure is engageable. Walls 86 are angularly oriented relative to their associated side walls 87. Each of the respective walls 86 include an extension 88 which is engageable with an outer surface 12 of a building wall panel. The wall extensions 88 are angularly related relative to their associated walls 86 and in the embodiment illustrated such extensions extend generally normal to each other because of the general normal relationship between the wall panels 1 and 2 with which such extensions 88 are engaged. Such extensions terminate in outwardly directed vertically extending flanges 89 extending normal thereto.

The

respective side walls

86 and 87 and of the respective form sections are integrally joined with each other along a ver tically extending edge 91. Walls 87 converge outwardly towards each other from edges 91 and terminate in vertically extending outwardly bent .vertically extending flanges 92 which are positioned in face-to-face engagement with each other and are held in such engagement by suitable fasteners, such as nut and bolt assemblies 93. It is through such flanges 92 that the

form sections

83 and 84 are integrally interconnected into a rigid unitary form 82 in the manner shown in FIG. 6.

The adjacent side walls 87 of the form structure shown in FIG. 6 are provided with alignment means 62 of the type described previously so that similar separable forms may be positioned end-to-end with the form just described.

Interposed between the respective wall 87 and outwardly directed flange 92 of each form section are short wall segments 94 which are alignable with each other as seen in FIG. 6 to provide a generally planar seat for tapered bolt and

nut assemblies

44, 46 and 47 of the type described previously. As will be noted from FIG. 5, flanges 92 are discontinuous at predetermined locations to permit engagement of the tapered bolt and nut assemblies to be engaged with the aligned wall segments 94 at spaced locations along the length thereof. In that connection, the spacing between the discontinuous segments of the vertical flanges in form 82 preferably corresponds to the vertical spacing described previously with respect to the reinforcing ribs 41 secured to form 9 of the prior described embodiment.

The separable character of the two form sections which make up the outer form is dictated by the need to separate such sections after corner column 81 has hardened to permit removal of such form from the column.

Because of the substantially greater size of column 81 produced when the two piece outer form is utilized, it has been found desirable to provide additional support for the form. To that end, vertically spaced triangular brackets 96 are welded in alignment to opposed walls 86 of the

respective form sections

82 and 83 and tapered nut and bolt assemblies of the type described previously are positioned to extend through the form between its opposed walls 86. The triangular brackets provide generally parallel seats against which the heads of the bolt and the tightening nut may be engaged.

Fewer of the laterally extending tapered nut and bolt assemblies are required and the spacing therebetween may be greater then the spacing between the nut and bolt assemblies which interconnect the opposed forms. In that connection, for the longer form, for example one 13 in length, three such triangular brackets are utilized along the length thereof, spaced centrally and equidistant from the center in the preferred embodiment.

The form structure shown in FIG. 6 includes an inner channel shaped form 97 defined by a base wall 98 and outwardly diverging

extensions

99 and 101 integrally connected therewith. Outwardly directed flanges 102 and 103 project at right angles to the wall extensions in the same manner described previously.

In basic construction, inner form 97 corresponds in configuration to inner form 8 described previously in the FIG. 2 embodiment. However, base wall 98 of the present form is of narrower width in accordance with the ability of the present form structure to produce an internal corner defined by a relatively narrow column surface portion which does not project appreciably into the building comer defined by the building wall panels 1 and 2. It should be obvious, however, that inner form 97 could be replaced in the embodiment shown in FIG. 6 with a form 8 such as shown in FIG. 2, and vice versa, depending upon the internal configuration desired for the comer column in a particular construction.

Inner form 97 includes alignment means 62 centrally of its base wall 98 for the purpose described previously.

Having thus made a full disclosure of preferred embodiments of the subject invention, reference is directed to the appended claims for the scope of protection to be afforeded thereto.

Iclaim:

l. Areusable building form structure for use in forming a settable corner column positioned between and integrally interconnecting a pair of adjacent angularly oriented preformed wall panels during construction of a tilt-up wall building and the like, said corner column being formed from a mass of settable construction material introduced into a space defined by said form structure and edge surfaces of said wall panels, said form structure comprising A. a first integral unitary preformed rigid and self-supporting elongated channel shaped form to be positioned in engagement with the outer surface of each of said pair of wall panels to bridge said space between said edges thereof, and

B. a second integral unitary preformed rigid and self-supporting elongated channel shaped form to be positioned in engagement with the inner surface of said pair of wall panels to bridge said space between the edges thereof,

C. said forms when engaged with said inner and outer surfaces of said wall panels closing off said space between said wall panel edges for a substantial portion of their height to receive and maintain therebetween said mass of settable construction material therein which is to form said corner column of said building between said wall panels,

D. said first form comprising 1. at least two angularly oriented side walls integrally connected with each other, and

2. extensions of said side walls which are engageable with said outer surfaces of said wall panels when said first form is positioned between said wall panels to bridge said space between said edges thereof,

3. said side walls converging outwardly relative to each other and being integrally connected with each other along an edge portion of said first form,

E. said second form comprising 1. a base wall, and 2. extensions of said base wall which are engageable with said inner surfaces of said wall panels when said second form is positioned between said wall panels to bridge said space between said edges thereof,

3. said extensions being angularly oriented relative to each other and to said base wall and diverging outwardly relative to said base wall, and

F. means provided on said side walls of said first form and along said base wall of said second form for reinforcing each such form and for facilitating operatively connecting said forms together to receive said settable construction material therebetween.

G. said space between said wall panel edges and said forms being generally enclosed thereby to receive said mass of settable construction material therein which defines said comer column and interconnects said wall panels into a unitary wall assembly.

2. The form structure of claim 1 in which said extensions of said side walls of said first form are generally coplanar continuations of such side walls.

3. The form structure of claim 1 in which said extensions of said side walls of said first form extend at predetermined angles with respect to such side walls.

4. The form structure of claim 1 in which said side walls of said first form join each other directly in an edge.

5. The form structure of claim 4 in which said side walls of said first form extend generally normal to each other and form generally a right angle therebetween.

6. The form structure of claim 1 in which said first form further comprises 4. two separable form sections operatively connected with each other along said edge portion at a location spaced from the respective extensions of said side walls.

7. The form structure of claim 6 in which each of said form sections includes a. one of said side walls and one of said extensions therein.

8. The form structure of claim 6 in which said separable form sections include a. outwardly directed flanges in face-to-face contact with each other, and

b. removable fasteners engaged with said flanges for maintaining said form sections together.

9. The form structure of claim 22 which further includes F. means adjacent the top of each of said first and second forms for operatively inter-connecting each such form with a correspondingly contoured form to be positioned in end-to-end vertical alignment therewith.

10. The form structure of claim 9 in which said means for operatively interconnecting correspondingly contoured forms comprises Y 1. a flange projecting generally normal from a wall of one of said forms adjacent the top end thereof,

a. such flange having at least two apertures therein,

2. a flange projecting generally normal from a corresponding wall of the other of said forms adjacent the bottom end thereof,

a. such flange having an alignment pin projecting therefrom which is receivable within one of the apertures in said first mentioned flange, and

b. an aperture therethrough adjacent said pin, and

3. removable fastening means receivable through the aperture in said last mentioned flange and the other aperture in said mentioned flange for maintaining said flanges together.

11. The form structure of claim 1 in which said first form is generally V-shaped in cross-section.

12. The form structure of claim 1 in which said first form is defined by two separable form sections operatively connected with each other.

13. The form structure of claim 12 in which each of said form sections includes 1. an outwardly directed flange,

2. the flanges of said respective sections being in face-toface contact with each other, and

3. removable fasteners engaged with said flanges maintaining said sections together.

Claims

1. A reusable building form structure for use in forming a settable corner column positioned between and integrally interconnecting a pair of adjacent angularly oriented preformed wall panels during construction of a tilt-up wall building and the like, said corner column being formed from a mass of settable construction material introduced into a space defined by said form structure and edge surfaces of said wall panels, said form structure comprising A. a first integral unitary preformed rigid and self-supporting elongated channel shaped form to be positioned in engagement with the outer surface of each of said pair of wall panels to bridge said space between said edges thereof, and B. a second integral unitary preformed rigid and self-supporting elongated channel shaped form to be positioned in engagement with the inner surface of said pair of wall panels to bridge said space between the edges thereof, C. said forms when engaged with said inner and outer surfaces of said wall panels closing off said space between said wall panel edges for a substantial portion of their height to receive and maintain therebetween said mass of settable construction material therein which is to form said corner column of said building between said wall panels, D. said first form comprising 1. at least two angularly oriented side walls integrally connected with each other, and 2. extensions of said side walls which are engageable with said outer surfaces of said wall panels when said first form is positioned between said wall panels to bridge said space between said edges thereof, 3. said side walls converging outwardly relative to each other and being integrally connected with each other along an edge portion of said first form, E. said second form comprising 1. a base wall, and 2. extensions of said base wall which are engageable with said inner surfaces of said wall panels when said second form is positioned between said wall panels to bridge said space between said edges thereof, 3. said extensions being angularly oriented relative to each other and to said base wall and diverging outwardly relative to said base wall, and F. means provided on said side walls of said first form and along said base wall of said second form for reinforcing each such form and for facilitating operatively connecting said forms together to receive said settable construction material therebetween, G. said space between said wall panel edges and said forms being generally enclosed thereby to receive said mass of settable construction material therein which defines said corner column and interconnects said wall panels into a unitary wall assembly.

2. extensions of said base wall which are engageable with said inner surfaces of said wall panels when said second form is positioned between said wall panels to bridge said space between said edges thereof,

2. a flange projecting generally normal from a corresponding wall of the other of said forms adjacent the bottom end thereof, a. such flange having an alignment pin projecting therefrom which is receivable within one of the apertures in said first mentioned flange, and b. an aperture therethrough adjacent said pin, and

2. the flanges of said respective sections being in face-to-face contact with each other, and

3. said extensions being angularly oriented relative to each other and to said base wall and diverging outwardly relative to said base wall, and F. means provided on said side walls of said first form and along said base wall of said second form for reinforcing each such form and for facilitating operatively connecting said forms together to receive said settable construction material therebetween, G. said space between said wall panel edges and said forms being generally enclosed thereby to receive said mass of settable construction material therein which defines said corner column and interconnects said wall panels into a unitary wall assembly.

3. said side walls converging outwardly relative to each other and being integrally connected with each other along an edge portion of said first form, E. said second form comprising

4. two separable form sections operatively connected with each other along said edge portion at a location spaced from the respective extensions of said side walls.

6. The form structure of claim 1 in which said first form further comprises

8. The form structure of claim 6 in which said separable form sections include a. outwardly directed flanges in face-to-face contact with each other, and b. removable fasteners engaged with said flanges for maintaining said form sections together.

10. The form structure of claim 9 in which said means for operatively interconnecting correspondingly contoured forms comprises

13. The form structure of claim 12 in which each of said form sections includes