US2858031A

US2858031A - Frame for tilt-up wall

Info

Publication number: US2858031A
Application number: US537937A
Authority: US
Inventors: Thelbert W Garmon
Original assignee: Individual
Current assignee: Individual
Priority date: 1955-10-03
Filing date: 1955-10-03
Publication date: 1958-10-28
Anticipated expiration: 1975-10-28

Description

Oct. 28, 1958 THE LBERT W. GARMON IN V EN 'TOR. "/A/ fl w ATTORNEY Oct. 28, 1958 -r. w. GARMON FRAME FOR TILT-UP WALL 2 Sheets-Sheet 2 Filed Oct. 3, 1955 THE LBERT W. GARMON g ,1 I W c? INVENTOR.

ATTORNEY Unitd ates Patent FRAME FOR. TILT-UP WALL Thelbert W. Garmon, Fort Worth, Tex. Application October 3, 1955, Serial No..537,937 4 Claims. (Cl. 214-1) This invention relates to building constructions and has reference to a frame for erecting wall panels of reinforced concrete.

An object. of the invention is. to reduce the cost and time required when. constructing buildings having concrete panel walls.

Another. object of the invention is to provide means for handling concrete wall panels before the same have completely cured, thereby saving time during the construction of concrete panel wall buildings.

A further object of the invention is to provide concrete panel handling means capable of setting the corners of incompletely cured panels on concrete piers and at the same time adequately supporting the panel during the setting operation.

Another object of, the invention is to provide a wall panel handling frame which automatically tilts awayfrom the wall panel after the latter has been erected.

A further object of the invention is to save time and expense in a tilt-up wall by combining the grade beam with the lower portion of the panels to form an integral part thereof.

These and other objects of the invention will become apparent from the following description and accompanying drawing, wherein:

Figure 1 is a perspective view of a preferred form of the invention showing the same holding a wall panel of reinforced concrete in a vertical position.

Figure 2 is a perspective view showing the opposite side of Figure 1.

Figure 3 is a broken elevation showing the lower portion of wall panels resting on piers and a broken elevation of a frame in accordance with the invention immediately prior to setting a corner of an incompletely cured wall panel on a pier.

Figure 4 is a broken perspective view of one of the frame members and one of the channel stringers, together with partly cured wall panel.

Figure 5 is a broken perspective view showing a removable lower corner of the form in extended position and removed from the primary or supporting form.

Figure 6 is an end elevation of a wall panel erected on piers and showing the frame tilting away from the upper portion of the wall panel as the frame is removed.

Figure 7 is an elevation of a brace employed for temporarily holding a wall panel in a vertical position prior to pouring concrete columns between erected wall panels.

Figure 8 is an enlarged broken elevation of the lower end of a wall supporting brace and illustrating the manner by which the same is secured to the earth during its temporary use.

The form of the invention shown includes spaced parallel frame members It? rigidly secured to each other by cross members 11 and diagonal braces 12. As shown in the drawings, the frame members are steel I-beams and the same are recessed as at 13, to receive a large rectangular concrete building form 14 therein.

ice

When. concrete is poured in the form 14, the latter is in a horizontal position and is supported upon the frame members 10. The form 14 is comprised of upper and

lower' surfaces

15 and 16 which are separated from each other by spacers 17 therebetween. Top and bottom form sides 18 are perpendicularly arranged on the upper surface 16 near the ends thereof, and perpendicular formed sides 19 are secured perpendicularly onsaid upper surface. The latterare provided: with holes 20: for receiving projecting ends of transverse enforcing rods 21. Other rods, not shown, are included in the form 14 and are arranged in the usual manner. It will be noted that two transverse rods 22 are provided in the lower end of the form 14, thus incorporating a grade beam or the equivalent thereof in the concrete panel 23 to be formed.

A feature of the invention has to do with removable corners. 24. in the lower end of the form 14 and whereby the incompletely .cured concrete panel 23 may be set on piers 25. The form 14 is recessed in each corner, as at 26, for receiving the removable corners 24; Each removable corner 24.is comprised of upper and

lower surfaces

27 and 28, a spacer 29 between the surfaces and along the lower outer edge thereof, together with perpendicular spacers 30 which are slidably received between upper and

lower surfaces

15 and 16 of the primary form construction 14. There is a perpendicular short length of form end 31 which extends from the adjacent form side 19. and. tea supportingshoe 32 projecting perpendicularly from each frame member 10 near the lower end thereof.

The shoe 32 is comprised of a transverse supporting surface 33 and .an integral bracket 34, both of which are secured to the surface of :its supporting frame member 10. on the side thereof adjacent the supported form 14. At .the upper end of the recess 13 in each frame member 10 there is a projecting web 34 having an extending bracket 35 for detachably securing the upper end of a stringer 36 of channel stock. Each stringer 36 is detachably secured to the upper bracket 35 by means of a bolt 37, whereas the lower end of each stringer is detachably secured to the upper surface 33 of each shoe 32 by means of a bracket 38 secured to the side of the stringer 36 and by means of a bolt 39 extending through the bracket and the transverse surface of the shoe.

When pouring the concrete panel 23, the frame members 10 are horizontally supported and the supporting form 14 is received in the recesses 13. The top and bottom forms 18 are in place, as are the sides 19 and the removable corners 24. The transverse reinforcing rods 21 and 22 and the additional reinforcing rods, not numbered, are in place prior to the pouring operation. If a standard mixture of concrete is used, the poured concrete is allowed to cure for approximately sixteen hours. Quick setting additives may be added to the concrete mixture for further reducing the setting time. A mobile crane, not shown, having a lifting hook 40 and horizontal lifting beam 41 on the latter, is employed for lifting, tilting and moving the frame, form and partially cured panel 23. Depending ears 42 are provided on the lifting beam 41 at each end thereof and have holes therein, not shown, for receiving bolts 43 which extend through drilled bosses 45 in the corners of the webs 34'. As shown in Figure 6, the described attachment of the lifting beam 41 with the frame webs 34 provide a center of lift outwardly of the frame assembly and on the side thereof supporting the panel 23. While the panel 23 is still in a plastic stage, plates 46 are secured to the exposed surface thereof, as by lag bolts, not shown, and which plates are provided with drilled cars 47 for subsequent attachment to the upper ends of diagonal braces 48, shown in detail in Figures 7 and 8. Each brace 48 includes a terminal fitting 49 on the upper end thereof and whereby the same may be attached to the ears 47 of the plates 46 by means of bolts 15. Each brace 48 preferably includes longitudinal adjusting means, such as the turn bolt 51, shown in Figure 7, and a diagonal foot 52 having a hole therethrough, not numbered, for receiving a large headed spike 53.

After the panel 23 is partially cured, the perpendicular ends 18 and sides 19, together with the corner forms 24 are removed, and the stringers 36 are secured in place by means of the heretofore described

bolts

37 and 39. The horizontal lifting beam 41 is then pivotally secured, in the described manner, to the corners of the webs 34 and the assembly is then hoisted to a vertical position and moved onto corners of the spaced piers 25. As shown in Figure 3, a space C is provided between the erected panels 23, and which space subsequently accommodates a concrete column, not shown, formed therebetween. After the panel 23 is set in place, and while supported by the mobile crane, the braces 48 are attached to the plates 46 and to the earths surface by means of the spikes 53'. Vertical adjustment of the panel is provided by means of the turn bolt 51. After the panel 23 is secured in its vertical position, the stringers 36 are removed. The supporting beam 41 of the crane is then lowered slightly and, by reason of the asymmetrical center of lift described, the frame members and form 14 supported thereon, tilt away from the erected panel.

In practice, several forms 14, on their supporting frame members 10, are poured during one afternoon and are ready for erecting the following morning.

The invention is not limited to embodiment herein shown and described, but may be made in various ways within the scope of the appended claims.

What is claimed is:

1. Means forming and erecting a concrete wall panel and positioning corners thereof on the corners of spaced piers while the panel is in a partly cured state, said means comprising: a generally flat rectangular frame assembly, a projecting transverse support at one end thereof, a rectangular concrete form on said frame assembly, one end of said concrete form being in engagement with said transverse support, the length of said transverse support being less than the length of the adjacent end of said concrete form, removable corners in said rectangular concrete form at the end thereof adjacent said transverse support, and means lifting said frame assembly and concrete form thereon to a vertical position with said transverse support at the lower end thereof.

2. Means forming and erecting a concrete wall panel as defined in claim 1, and wherein the center of lift of said means lifting said frame assembly is located asymmetrically of the center of gravity thereof and toward the side including the transverse support.

3. Means forming and erecting concrete wall panels as defined in claim 1, and including removable stringers over said rectangular concrete form for retaining the partly cured concrete panel therein when lifting said assembly.

4. Means forming and erecting concrete wall panels as defined in claim 1, and wherein said transverse support is comprised of projecting shoes on said frame assembly inwardly of the corners of said concrete form.

References Cited in the file of this patent UNITED STATES PATENTS 2,460,532 Porter Feb. 1, 1949 2,475,073 Billner July 5, 1949 2,514,805 Seymour July 11, 1950 2,583,626 Buell Jan. 29, 1952 FOREIGN PATENTS 1,051,673 France Jan. 18, 1954 1,052,612 France Jan. 26, 1954 OTHER REFERENCES Construction Method March 1946, pp. 108 and 109. Popular Science, March 1953, p. 171.