Multi-panelled concrete forming structure for forming flat curved walls

Claim 2

In a modular curved concrete form structure, wherein the improvement comprises a pair of curved sections with one section having a greater diameter, each section including a series of at least three vertically extending rows of modular concrete form panels joined together in curving side-by-side relation as a gang providing a generally curved surface concrete forming area, the panels each having confronting slotted panel margins about its perimeter, fasteners securing the confronting panel margins in curving side-by-side relation, a series of spaced vertically aligned and horizontally positioned modular flat sided walers mounted in lapped engagement against said confronting slotted panel margins, said walers each having a width less than the width of a pair of the panels but exceeding the width of one of said form panels only being of sufficient additional width to extend over joints formed between the confronting slotted panel margins at opposite sides of each panel to provide a backing, fasteners securing the spaced vertically aligned horizontally positioned walers to the panels, upright strongback structure mounted in abutment against said spaced vertically aligned horizontally positioned walers generally in right angle relation thereto, and fastener means securing said strongback structure in unitary assembly with said panels.

Claim 3

The structure of claim 1 further defined by the modular panels each having a slot forming face on one side and said slotted panel margin on an opposite side, the slotted panel margin being box-shaped and defining an opensided cavity, ends of said waler being extendable into said open sided cavities thus enabling said panels and their flat forming faces to be oriented to form said curved surface concrete forming area.

Claim 4

The structure of claim 1 further defined by said panels having engaging opposed edges on opposite sides thereof, the opposed edges defining vertically extending V-shaped joints with a closed end of the V being located in said curved surface concrete forming area.

Claim 5

The structure of claim 1 further defined by said waler comprised of a pair of spaced U-shaped waler channels and longitudinally spaced waler connector plates rigidly connected in assembly with the U-shaped waler channels and with the channels providing spaced parallel flat surfaces, with one flat surface being engageable with said curved gang of side-by-side panels and with another flat surface being engageable by said strongback structure.

Claim 6

The structure of claim 1 further characterized by the forming surface area of the outside of row of curved wall panels being longer than the inside surface area.

Claim 7

The structure of claim 1 further defined by U-shaped fillers being positioned between the panels of the curved section having a greater diameter, filler fastener means for securing the fillers in fixed detachable knock-down assembly with adjoining ones of said panel margins, ends of the waler fasteners extending into the U defined by the U-shaped fillers and with said filler fastener means coacting to secure said waler fastener in assembly with the associated curved section.

Claim 8

In a modular concrete form structure wherein the improvement comprises a series of at least three vertically extending rows of reusable concrete form panels to be joined together in side-by-side relation as a gang in the formation of a curved concrete wall, the panels having confronting slotted panel margins about their perimeter, fasteners securing the confronting panel margins in each series in side-by-side relation, a series of spaced vertically aligned and horizontally positioned walers for said panels and being mounted in lapped engagement against said confronting slotted panel margins, said walers each having a width less than the width of a pair of the panels but exceeding the width of one of said form panels and only being of sufficient additional width to extend over joints formed between the confronting slotted panel margins at opposite sides of each panel to provide a backing, fasteners for securing the spaced vertically aligned horizontally positioned walers to the panels in each series, upright strongback structure for each series mounted in abutment against said spaced vertically aligned horizontally positioned walers generally in right angle relation thereto and tie rod fastener means securing said strongback structures with said panels thereby connecting said transversely spaced first and second rows of panels in unitary assembly in readiness for a concrete pout to form a concrete wall.

Claim 9

In a modular concrete form structure wherein the improvement comprises a series of at least three vertically extending rows of reusable concrete form panels to be joined together in side-by-side relation as a gang in the formation of a curved concrete wall, the panels having confronting slotted panel margins about their perimeter, fasteners securing the confronting panel margins in each series in side-by-side relation, a series of spaced vertically aligned and horizontally positioned walers for said panels and being mounted in lapped engagement against said confronting slotted panel margins, said walers each having a width less than the width of a pair of the panels but exceeding the width of one of said form panels and only being of sufficient additional width to extend over joints formed between the confronting slotted panel margins at opposite sides of each panel to provide a backing, fasteners for securing the spaced vertically aligned horizontally positioned walers to the panels in each series, upright strongback structure for each series mounted in abutment against said spaced vertically aligned horizontally positioned walers generally in right angle relation thereto and tie rod fastener means securing said strongback structures with said panels thereby connecting said transversely spaced first and second rows of panels in unitary assembly in readiness for a concrete pout to form a concrete wall.

Claim 10

The structure of claim 7 further defined by the modular panels each having a slot forming face on one side and said slotted panel margin on an opposite side, the slotted panel margin being box-shaped and defining an open sided cavity, ends of said waler being extendable into said open sided cavities thus enabling said panels and their flat forming faces to be oriented to form said curved surface concrete forming area.

Claim 11

The structure of claim 7 further defined by said panels having engaging opposed edges on opposite sides thereof, the opposed edges defining vertically extending V-shaped joints with a closed end of the V being located in said curved surface concrete forming area.

Claim 12

The structure of claim 7 further defined by said waler comprised of a pair of spaced U-shaped waler channels and longitudinally spaced waler connector plates rigidly connected in assembly with the U-shaped waler channels and with the channels providing spaced parallel flat surfaces, with one flat surface being engageable with said curved gang of side-by-side panels and with another flat surface being engageable by said strongback structure.

Claim 13

The structure of claim 7 further defined by U-shaped fillers being positioned between the panels of the curved section having a greater diameter, filler fastener means for securing the fillers in fixed detachable knock-down assembly with adjoining ones of said panel margins, ends of the waler fasteners extending into the U defined by the U-shaped fillers and with said filler fastener means coacting to secure said waler fastener in assembly with the associated curved section.