Abstract: An apparatus is used for adjusting the distance between two opposed form panels and includes a tie rod, first and second nut members, a seat member, a C-shaped clamp member and a bolt member. The tie rod passes through the first and second form panels, and has first and second threaded end portions which engage respectively the first and second nut members. The seat member has opposed first and second sides, and a through hole extending from the first side to the second side. The second nut member has opposite first and second ends. The second threaded end portion of the tie rod is positioned relative to the seat member when the second end of the second nut member abuts against the second side of the seat member. The C-shaped clamp member has two arm portions which engage the retaining cavities of the seat member.

Abstract: A wall form system for use in constructing a poured concrete wall includes a plurality of panels aligned in an edge-to-edge configuration to form spaced wall forms. The wall forms are maintained in a spaced relationship by a tie which includes a pair of cutouts which mate with notches in the side edges of each of the panels at the juncture between adjacent panels. A retainer is provided to secure each end of the tie to the outer face of the adjacent panels. After the concrete wall is poured and hardened, the wall forms are easily disassembled by breaking a first frangible section from the tie and removing the wall form panels and then breaking a second frangible section from the tie which is projecting from the concrete wall. The ties and retainers are disposable and easily assembled with the wall forms thereby alleviating the need for collection and retrieval when the wall forms are disassembled.

Abstract: A form assembly is disclosed for forming vertical concrete walls for prefabricated apartment and office modules. The form assembly has a wall form having a plurality of internal wall forms and corresponding external wall forms. The wall form is connected to a support structure, and a plurality of hydraulic lifting cylinders connect to the support structure to raise and lower the wall form. The form assembly may also have hydraulic open and close mechanisms, hydraulic form ties and a control console for the hydraulic system. External corner mechanisms may be provided for locking the external form corners in place prior to concrete pouring. An efficient method of manufacturing the modules includes several steps. Slab reinforcement bars and conduits are layed on a slab deck. Concrete is poured over the slab reinforcement bars and conduits to form a slab. Wall reinforcement bars and conduits are erected on the slab for vertical walls.

Abstract: A retaining member for retaining spaced rigid members within a concrete matrix. A form for shaping the concrete matrix includes a base, a planar shaping surface for supporting the concrete matrix during its initial setting period, and a supporting member located on the rear side of the shaping surface. The retaining member includes a compressible hollow cylinder, preferably made of a foamed polymeric material. Portions of the retaining member are associated with the form and the supporting member, holding the retaining member in place to retain each rigid member in a parallel position to the other rigid members.

Abstract: Apparatus for in situ attachment of insulation panels to poured concrete walls as the walls are formed. Preferably, polymeric F-shaped strips are attached to novel tie bars by transverse retainers, and receive the edges of insulation panels to hold them against the forms so that uncured concrete is poured between the forms and against the panels. After the concrete is cured, the forms are removed, leaving the insulation panels and the strips, the strips serving to receive dry wall fasteners.

Abstract: A sleeve assembly for forming a lined opening in molded structures made from concrete or the like. The sleeve provides the lining. During formation of the structure, the sleeve is held in place by a pair of generally hemispherical end cups having tapering and/or curving surfaces for supporting sleeves of a variety of sizes. The end cups are preferably held in place by a retainer which passes through the sleeve and is connected to the end cups by loose fitting clips which are mounted in the end cups. The sleeve assembly is adapted to be secured between a pair of generally parallel panels between which a molded structure such as a wall is formed.

Abstract: An improved moldboard fastener includes mainly one ore more inner pull rod, two shower heads, two outer pull rods, two washers and two nuts. The shower head is made integrally of a concrete material having a great strength and is composed of a rod body having inner threads. The rod body, which is enclosed in the shower head, extends outwards for an appropriate length and comprises a flange extending in a direction opposite to an end of the shower head in such a manner that the flange is aligned with the end of the shower head. The inner pull rod is located between and fastened to the two shower heads while the two outer pull rods are fastened respectively to another ends of the two shower heads. The inner pull rod, two shower heads and two outer pull rods are held securely in place by means of the two washers and the two nuts. Upon the completion of the pouring operation of the concrete into the space defined by the moldboards, the inner pull rod and the shower heads are left in the concrete wall so built.

Abstract: A clamping and fixing arrangement which functions to fixate the various elements of formwork or shuttering, preferably intended for moulding concrete. The arrangement is mainly characterized by an eccentric locking device which is provided with an expandable eccentric part and which has a predetermined axial extension in an expanded state and an axial extension which is smaller than the predetermined axial extension in a non-expanded state. The arrangement includes a form tie and related formwork or shuttering.

Abstract: A formwork panel has a face plate which is mounted on a frame made up of structural shapes. The panel is reinforced by a set of spaced, parallel reinforcing beams mounted on the back of the face plate. Additional beams are disposed between selected pairs of reinforcing beams. The additional beams are perpendicular to the reinforcing beams and are spaced from the frame. Each additional beam is provided with an opening which registers with a corresponding opening in the face plate. The registering openings receive tie rods which connect two facing formwork panels to one another so as to define a pouring space for concrete.

Abstract: A device for temporary retention of a lifting element on a metal surface of a form during the concrete pouring and setting phases of a prefabricated concrete member includes a part which is designed to form a depression in a concrete section and is equipped with magnets for attachment to a metal surface of a form. The device includes a part having a flat face, a recess terminating at a face opposite the flat face and orthogonal thereto desinged to permit passage with sealing action of a lifting element, and a slot terminating in the flat face. A locking element is mounted in the slot and pivots around an axis transverse to the slot. The locking element has a hook which forms a bolt designed to ensure retention of a free end of the lifting element when the locking element is in an unlocked position in the slot.

Abstract: Formwork structure for erecting continuous surfaces on one or both sides of a casting cavity. A formwork member with a plurality of openings defines the surface of the casting cavity. Form stays (32) extend through the openings in the formwork member surface into the casting cavity. Formwork stiffening members are located adjacent to the formwork member surface outside the casting cavity. The formwork members are arranged to define longitudinal and transversal mutually crossing channels with openings for receiving the form stays. The formwork members define the walls and base of the channels, which open outwardly away from the casting cavity. Side plates are connected to the formwork members at the edge of the formwork structure to create substantially rectangular structures. A rod-shaped connecting member is used to join adjacent sections of formwork structure. Arm crosses with a central opening for receiving the form stays are located in the crossing channels.

Abstract: A first metal bar having an upwardly extending flange; a second metal bar; a third angulated metal bar or strut; a first horizontal waler support plate; a second vertical form engaging plate extending downwardly from one end of the first horizontal waler support plate, a third vertical waler engaging plate extending upwardly from an opposite end of the first horizontal waler support plate; and, a rotatable cam lock device for engaging with a form tie which device is pivotally mounted to and beneath the first horizontal waler support plate such that the first metal bar is welded to the first horizontal waler support plate with its flange extended upward while that bar extends outward from the first horizontal waler support plate and such that the second metal bar is welded to the second vertical form engaging plate and extends downwardly therefrom, and such that the third angulated metal bar or strut is welded at one end thereof adjacent to an outer end of the first metal bar and is welded at an opposite end t

Abstract: The invention relates to shuttering elements for use in building construction. The shuttering elements are of a synthetic plastics material and define a rectangular shuttering wall, peripheral side walls and engagement and locking formations whereby a plurality of similar shuttering elements can engage one another and be locked in their engaged configuration, to form an extended shuttering wall of a shuttering structure. A complete shuttering structure defining a building structure to be constructed can then be erected by placing engaged shuttering elements in an opposing configuration, link rods providing for opposing walls of the shuttering structure to be engaged. A shuttering structure so formed can then be filled with a settable material in order to form the required building structure.

Abstract: A panel for a concrete forming structure including two siderails and two end rails extending between and connecting the ends of the siderails. A corrugated, aluminum core member is located inside the area formed by the rails and substantially covers the interior space of the panel. An outer structural sheet extends between the two sets of rails and has the core member connected thereto. An inner plywood sheet extends between the two sets of rails and is attached thereto. The core member is also connected to the plywood sheet. Rigid insulating material fills the inner and outer troughs formed by the corrugated member. A tubular connecting member is provided to connect the afore-mentioned panel to an adjacent panel. It has two connecting flanges extending outwardly from one side and bolt receiving slots formed in each of these flanges. The tubular member has aligned holes therein for passage of a tie rod and special projections that form a channel to receive flanges provided on the edges of the panels.

Abstract: A concrete form tie assembly in which the tie rod is formed from a high tensile strength flexible wire member, with the sleeve being formed of a flexible or yieldable material. A short sleeve member is inserted into the spacer sleeve adjacent one end with washer members on opposite ends thereof for retaining on the tie rod member which is provided with spaced protrusions for coaction with the wash members, the tube and washer assembly serving to rigidify the assembly for assisting in insertion and removal of the tie rod and sleeve as a unit. The leading end of the tube and washer assembly may be provided with a conical end to act as a guide. The ends of the tie rod member are enlarged, such as by welding head members thereto, the head members being configured for coaction with conventional hairpin or snap tie wedge members.

Abstract: An arm piece is put on the tip of a spacer projecting out through an outer wall of a frame board in such a way that the arm piece is fixed perpendicularly to the frame board positioned between the spacer flange and the arm piece. The arm piece, at its back end, is provided with a bearing section projecting upward. The bearing section is provided with a support piece capable of rotating toward and away from the frame board. The support piece is provided with a supporting section to catch a long reinforcing material for the frame board. The long reinforcing material is put into the supporting section and then the support piece is rotated toward the frame board. Thus, the long reinforcing material gets held between the supporting section and the outer wall of the frame board and the load exerted in the direction from the frame board is supported by the bearing section via the support piece.

Abstract: A concrete form self securing tie rod is provided with a cone shaped element having a dowel-like extension slidably mounted on an elongated rod having formed thereon an integrally formed wedge portion. The dowel-like portion of the cone-shaped element has teeth that lockingly engages the element into an aperture formed in the panel making up one side of the concrete form to prevent vertical movement of the tie rod. The wedge shaped portion of the elongated rod lockingly engages the cone element to prevent horizontal movement of the tie rod.

Abstract: Improved apparatus for forming the deck and associated coping of a pool. The pool defines and encloses a central area for receiving and retaining water and includes a substantially vertical wall; a horizontal support surface adjacent to and intersecting the pool wall to define a horizontal edge at the top of the wall; a flexible sheet of waterproof material for lining the pool, the liner having a peripheral edge; and a liner retainer secured to and extending continuously along the horizontal support surface adjacent the horizontal edge of the pool wall and having a channel extending along the length thereof contoured to receive the peripheral edge of the liner, the channel opening toward the central area of the pool. The improved apparatus includes a continuous strip of semirigid material and an elongate member for supporting the strip.

Abstract: A form tie is disclosed for interconnecting a pair of spaced panels providing the sides of a form and for locating and supporting at least one reinforcing rod at a preselected location intermediate the panels. The form tie includes a unitary elongated member of generally Z-shaped configuration having generally parallel elongate members joined by an intermediate diagonal member and rectilinear braces and tabs for supporting the panels of the form. One embodiment of the present invention includes a second elongate member formed integrally with the generally Z-shaped member for locating and supporting a reinforcing rod at a preselected location intermediate the panels. Alternate embodiments of the form tie of the present invention include means for locating and supporting a second reinforcing rod at a preselected location intermediate the panels.

Abstract: Improved apparatus for forming the deck and associated coping of a pool. The pool defines and encloses a central area for receiving and retaining water and includes a substantially vertical wall and a generally horizontal bond surface adjacent the wall, the bond surface and pool wall intersecting at and defining a horizontal edge along the upper portion of the pool wall. The improved apparatus comprises a continuous strip of semirigid material and an elongate support member for maintaining the strip of material in position against the upper portion of the pool wall.

Abstract: The formwork for a concrete structural member includes a recoverable formwork part. This recoverable part has an axially elongated sheath which closely encloses a tendon over a relatively long portion of the length of the sheath. A cup-shaped part formed integrally with the sheath is arranged to form at least a portion of a recess in the concrete member. When assembled on the formwork, one end of the sheath is arranged to be located within the concrete when it is poured and the other end is located on the exterior of the formwork. The cup-shaped part is located intermediate the ends of the sheath and just inside the formwork. A member is engageable with the sheath for attaching it to the formwork.

Abstract: An anchor for use in the post-tensioning of prestressed concrete, including an anchor case having a longitudinally tapering outer wall surface and a tapered longitudinal bore for receiving a chuck comprising wedge segments which are in gripping engagement with a tendon passing therebetween. The anchor case and chuck are approximately the same length, and the anchor case is cold forged with the top end thereof folded inwardly to effect greater thickness at that point, which structure, in combination with a dome-shape thrust plate extending outwardly from the outer periphery of the anchor case proximate the folded portion thereof, contains the hoop forces exerted on the anchor case by the chuck.

Abstract: Concrete form systems and hardware components thereof wherein the inner and outer walls are composed of abutting, side-by-side plywood sheets and are tied together by wall ties and stud-bearing plates, wherein the improvements reside in: metal straps serving as inside and outside corner braces with right angled legs having specially spaced, transverse, tie-rod-receiving slots in one longitudinal edge of each leg; rectangular plates having a center hole and two studs projecting from its inner face on opposite sides of the hole, said plate having longitudinal, flange edges or lips forming the sides of a trough in the outer face; flat, metal straps for securing filler strips between plywood panels, which straps have specially spaced, transverse, tie-rod-receiving slots in one longitudinal edge; and hingedly connected, rectangular panels forming a right angle corner for the outside wall, said panels being foldable to a shipping and storing position in which the panels are in overlying, substantial face-to-face pa

Abstract: A shuttering for casting therein concrete structures is composed of panels, a set comprising at least two panels each of which is provided along at least one edge thereof with two parallel grooves in combination with at least one rail for connecting the panels such rail having profiled portions fitting into either of the grooves, means being provided on the said rail for forcibly urging the panels towards one another whenever the said profiled portions of the rail are engagingly inserted in the grooves of the two panels.

Abstract: A tie assembly for use in removably supporting plywood sheets or other wall defining materials in fixed spaced relationship to define a form into which concrete may be poured to form a portion of a structure. The tie assembly so operates that portions thereof not embedded in the concrete may be removed for future use after the concrete has set. The plywood sheets after removal and recovery of the outwardly disposed portions of the assembly may be separated from the set concrete wall. The tie assembly is adapted for use with forms defined by new plywood sheets, or forms in which previously used plywood sheets are employed that have bolt holes of relatively large diameter therein.

Abstract: An improved concrete form and tie rod, the concrete form and tie rod being constructed to facilitate disassembly of concrete form assemblies. The tie rods and concrete forms and structured to permit the ends of the tie rods to be broken off following completion of the concrete casting process to thereby facilitate removal of the aligning pins which hold the concrete forms of a form assembly together.

Abstract: A tie rod assembly to secure form panel elements in edge to edge engagement and tie opposed panels made of such elements in spaced apart relationship. The assembly employs a tie rod having a length less than the distance between the opposed panels and gripper mechanisms releasably engageable with the ends of the tie rod and proportioned for extension through tie rod openings formed in the panels. Key elements are engageable with the gripper mechanisms and the panel elements to lock the mechanisms in engagement with the rod and secure the panel elements in place. The rod is provided with enlarged heads at either end thereof for engagement by the gripper mechanisms and, in a preferred embodiment, the sides of the head are flattened.

Abstract: A form tie and a method of making the same is provided. The form tie includes an elongated hollow protective sleeve contiguously surrounding a portion of the form tie to facilitate the removal of the form tie portion from a settable casting, such as concrete. The thickness of the sleeve is minimized so that the cross-sectional area of the form tie portion which includes the surrounding sleeve is also minimized.

Abstract: A headless form tie rod and associated fastener that contacts the form tie at two spaced points. The tie rod provides a cylindrical body with plural spaced areas protruding in one dimension and flattened in the other dimension. The principal fastening structure provides a wedge type device that releasably fastens the rod in a form structure at two spaced points. A species of fastener provides releasable fastening by means of a pivotable lever. Spacing washers releasably positionable on the form ties maintain forms in spaced relationship.

Abstract: A tapered tie for use in concrete form tying apparatus comprising a threaded steel rod having a longitudinally tapering protective plastic sleeve placed over the central portion thereof.

Abstract: A mold element for casting concrete walls, which comprises a mold wall strengthened by an assembly of elongate structural steels which extend substantially parallel to one another and to one edge of the mold wall, and having at least two mold beams extending transverse to the said structural steels and across the mold wall from said one edge thereof to the opposite edge, each of the mold beams being upright when the mold element is in a vertical orientation, with said one edge uppermost, to form a mold, and each mold beam having one and only one coupling point at which a stay member can be positioned to extend between the mold element and a corresponding opposed mold element to link them together to form a mold cavity between them, said coupling point of each beam being located at a position between 35% and 40% of the length of the beam from the other end thereof.

Abstract: A form for walls and the like of the type formed by two parallel, facing molding surfaces each of the surfaces being formed by a plurality of panels, each panel having a rigid appendix extending transversly of the molding surface thereof and the free end of which constitutes a rigid vertical element, the ends of said element having assembly and connection means for cooperating with the adjacent end of the vertical element of a vertically adjacent panel. Mutual locking means are provided on the vertical edges of adjacent panels; and means are also provided for connecting facing panels and locking the same against relative movement.

Abstract: There is provided an improved clamping lock for tie rod ends in form structures for settable casting compositions, e.g., concrete casting forms, which lock is characterized by means for attaching it to the form structure, and a pair of jaws shaped for mating coaction with the outer end of a tie rod end whereby relative axial movement of the lock with respect to the tie rod end is prevented and the form structure is correspondingly held against movement toward or away from an opposite form structure.

Abstract: A wall forming structure is disclosed, where very large panels may be formed having sheathing placed against a plurality of studs which are, in turn, secured to at least a pair of strongbacks where the strongbacks comprise a pair of channel-shaped members in spaced back-to-back relationship. The panels are placed in opposed relationship to form a cavity into which concrete is placed to form a wall, and the panels may each be moved as a single unit -- depending upon their overall size. Indeed, using suitable spacers, the entire wall form may be constructed away from the place where a wall is to be formed, and be lifted or moved into place using suitable handling equipment such as cranes. Each strongback comprises a pair of channel-shaped members where there is an outwardly facing T-shaped slot formed in each side wall of each channel, and a pluraity of plates each having an opening through its thickness is secured to each pair of channel-shaped members at each place where a tie will extend between the panels.

Abstract: A tie rod is provided having an abutment on one end portion thereof spaced a predetermined distance inwardly of the terminal end of the rod. A tubular sleeve is slidably mounted on the one end portion of the rod outwardly of the abutment for endwise abutting engagement with the latter and the sleeve includes structure which renders the sleeve substantially incompressible in an axial direction, but enables the sleeve to be expanded in radial directions. A wedge sleeve is slidably mounted on the end portion of the rod outwardly of the first-mentioned sleeve and includes a tapered end portion receivable within and operative to radially expand the adjacent end of the first-mentioned sleeve.

Abstract: A tie structure is provided for use in conjunction with concrete forms and includes structure whereby the form sections are prevented from collapsing inward until concrete is poured in the form. A first form of tie includes an expandable locking cone which may be expanded in diameter on the inner side of the form after the tie is placed in position in the form and as the locking lever of an associated waler bracket is moved to the applied position. A second form of tie construction utilizes an axially compressible and radially expandable sleeve for expansion in the tie opening formed in the concrete form.

Abstract: There is provided an improved clamping lock for tie rod ends in form structures for settable casting compositions, e.g., concrete casting forms, which lock is characterized by means for attaching it to the form structure, and a pair of jaws shaped for mating coaction with the outer end of a tie rod end whereby relative axial movement of the lock with respect to the tie rod end is prevented and the form structure is correspondingly held against movement toward or away from an opposite form structure.

Abstract: A gang tie holding bolt holding tie rods of multiple panel units in gang form sections for pouring concrete has a folded over body portion with two spaced parallel flanges from one of which a finger is formed to extend through adjacent frame members of adjacent panel units, the other flange being cut away opposite the finger. Spaced from this finger is a hole through both flanges to receive a key. The tie rod passed between the flanges and the loop in the end of the tie rod receives the key to hold the bolt and tie rod in position. The shoulders formed on the two flanges by the cut away portions thereof engage the outer faces of adjacent frame members to prevent tipping of the bolt thus locking the panel units more securely together.

Abstract: A readily assembled and readily stripped, reusable concrete form is constructed from a plurality of similar flat-faced panels having spaced, co-planar, open-ended edge-oriented slots in the margins of the other or opposite faces thereof; and a plurality of elongated L-shaped keys which are employed both to interlock the panels on each side of the form, and to interlock the form from side to side. The panels are arranged in two spaced, parallel, oppositely disposed, edge to edge, co-planar flat-faced arrays of the same; and are interlocked with one another in each array by placing a first set of the keys in the plane of the slots opposite points relatively within the margins of the panels, and slidably engaging the keys in the adjacent slots of adjacent panels.