Abstract: The innovation relates to a pool covering system that is usable as a flooring surface. The pool covering system includes brackets and support beams spanning the pool opening. The beams provide structural support to cross members and flooring placed on top of the beams. The pool covering system does not require significant drainage of the pool and does not damage the pool structure during installation and use.

Abstract: An apparatus for adjusting a haunch height and related systems and methods includes a support angle. The support angle includes first and second flanges, and a surface of the first flange includes a hole. The apparatus also includes a coil rod and a rotatable nut.

Abstract: A clip for holding a structural member in position relative to a member as part of a form for receiving concrete includes a main body portion, a hook portion extending from the body portion for receiving at least a portion of the structural member, and a first breakaway section between the main body portion and the hook portion. A form incorporates such clip.

Abstract: A device for assisting to secure a bridge support bracket to a beam, the device comprising: a support frame, a hook to secure the support frame to the beam, a clamp to grasp and hold the bracket, and a pivot axle to pivotally connect the clamp to the support frame. With this device, a bridge builder can use the clamp to grasp and hold the bridge support bracket, and then pivot the clamp and support bracket relative to the beam.

Abstract: A formwork structural member having at least one core made of a material that has a density between approximately 40 kg/m3 and approximately 500 kg/m3, and at least one metal casing that substantially covers an outer contour of the core, the metal casing being arranged attached to the core.

Abstract: A mold includes a first mold half, a second mold half opposite to the first mold half, and a thermoelectric generator. The thermoelectric generator includes a high temperature conductive portion, a semiconductor electricity-generating portion, and a low temperature conductive portion. The high temperature conductive portion is positioned in contact with the first mold half and configured to conduct heat from the first mold half to the semiconductor electricity-generating portion. The low temperature conductive portion is exposed to the air. The semiconductor electricity-generating portion is sandwiched between the high temperature conductive portion and the low temperature conductive portion, and positioned in contact with the high temperature conductive portion and the low temperature conductive portion; the semiconductor electricity-generating portion is configured for forming a voltage difference.

Abstract: A stabilizer kit for a compression head of a concrete block machine is provided, the kit including a stabilizer plate, a fiber disc, a stud, a pair of spacer plates and a set of bolts for attaching the stabilizer plate and a pair of spacer plates to and between an upper portion and a lower portion of a frame of the block machine.

Abstract: The invention provides for a removable former which is interlockable with other, similar formers between spaced-apart ribs to form shuttering between the ribs for a reinforced concrete slab. The former includes a hollow block (110) which has a top face (112), a front face (114), a rear face, two opposed side faces (116) and an interlocking flange (118) on or below each of the side faces for interlocking the hollow block, side by side, with adjacent, similar hollow blocks. The interlocking flanges (118) extend from the side faces (116) so that when the hollow block is interlocked with an adjacent hollow block, a gap is formed between adjacent side faces of the interlocked blocks. The former also includes a support member (122) for supporting the hollow block (110) on two of the spaced-apart ribs during casting of the concrete slab.

Abstract: A main frames having bottom and top frame parts for concrete molding machines of the kind which are used in making slabs or blocks for covering surfaces and erecting walls are usually made by welding together cut standard steel sections of the types HEM, RHS, UNP, etc. The requirements to materials and welds at the making of bottom frames of this kind are high due to the fact that welded structures subjected to vibration only has 10-15% of the basic material strength in the welding zones. Thus, the main frame has a bottom frame part (40) formed of two flame cut bottom plates (42, 44) arranged in parallel as an upper plate (42) and a lower plate (44) and forming the basic shape of the bottom, the bottom plates (42, 44) being interconnected by at least two longitudinal plates (46, 48) and a number of transverse plates (50, 52, 54). In this way, substantial savings are achieved as the main frame can be made with fewer or no welds in the critical areas, or with welds of a lower class.

Abstract: An overhanging form system for attachment to a support structure is disclosed. The support structure includes an upper portion and a lower portion, and the overhanging form system comprises a pair of spaced apart hangers, with each of the hangers being adapted to engage the upper portion of the support structure. A pair of frames are provided, with each of the frames having a first portion and a second portion. The first portion of each frame engages a corresponding one of the hangers, the second portion of each frame is adapted to engage the lower portion of the support structure. Each of the frames further includes a first leg and a second leg, with the first leg having an inner end disposed adjacent the first portion of the frame and an outer end disposed outwardly from the first portion of the frame. The second leg extends from the second portion of the frame to engage the outer end of the first leg. A plurality of stiffeners are provided.

Abstract: A horizontal floor or roof structure having a plurality of spaced parallel joists each joist having a vertical web with upper and lower flanges extending from the web. Each flange has a free edge with a tubular bead extending along each free edge and having an elliptical cross-section wherein the minor axis is at least 20% of the major axis. A floor or roof member is supported over said metal joist. A preferred method of forming a horizontal reinforced concrete wall structure for a building includes mounting a wire mesh material over the upper flanges of the joists, and pouring concrete in a flowing condition onto the concrete forms over the mesh material and over the upper flanges of the joists so that curing of the concrete provides a horizontal reinforced composite concrete wall structure.

Abstract: A removable support structure for concrete slab fabrication is described. A horizontally length adjustable latch device may be secured to both ends of shoring girders or shoring beams, or to just one end with a fixed in place latch secured at the other end, to permit rapid and accurate placement of the shoring support across a span to be structured in concrete. Vertical shoring posts and supports are eliminated, with the added advantage of the plane of the shoring always being automatically in the plane of the floor being formed. Bearing shoes on the ends of corrugated deck members, secured to building girders, cooperate with straps at their other ends, accurately and securely positions the corrugated decking in place. After the concrete has hardened, the entire support structure, including the shoring girders, shoring beams, and corrugated deck members, are rapidly and efficiently removed, ready for re-use.

Abstract: A reusable concrete support frame removably supported by horizontal supporting beams while a concrete slab is poured on top of it to build a bridge. The frame has an angle iron end member at each end of the frame which removably engages the horizontal supporting beams at a slight angle. One of the angle iron end members is welded to two parallel, spaced apart first channel irons, and the other angle iron end member is welded to two parallel spaced apart second channel irons. The first pair of channel irons insert between the second pair and are pivotally secured to them by bolts so that the channel irons articulate relative to their corresponding mating channel irons. The channel irons can be locked together so the frame is horizontal when the concrete is poured and thereafter can be released to pivot or articulate downward to remove the frame for reuse.

Abstract: An energy efficient deck framing system and method is disclosed. In a deck framing system having structural framing members that support a deck panel structure, individual deck panels are inserted between pairs of the framing members. Supporting rods extend downward through the top of the framing members and are provided with a support nut that is sized to maintain the framing member in a supported fashion. An insulating subassembly is provided having an insulating washer interposed between a conventional washer or a secondary nut and the top of the framing member, and an insulating retainer clip received in the lower portion of the top of the framing member and the support nut. The insulating retainer clip is constructed and arranged to be securably received within the contours of the framing member.

Abstract: A system and method for securing an insulated concrete wall form to an existing support/bracing structure such as a strongback for keeping the form straight and plumb during construction. The attachment system uses a flexible member, such as a tensioning plastic strap, to hold the strongback against insulated panels of the insulated concrete wall form. Openings are cut through the insulated panels to provide a pathway for the strap. A horizontal anchoring bar is positioned in the insulated concrete wall form to secure the strap. The strap is threaded through one of the openings, wrapped around the anchoring bar and then threaded out through the other opening. The strap is wrapped around a strongback and the ends of the strap are secured using a crimp connector. A wedge may also be inserted between the strongback and the strap and pressed downwardly to adjust the tension of the strap and align the insulated concrete wall form against the strongback.

Abstract: A member having first and second vertically extending leg portions, and a base member connecting one end of each leg member, a wood beam for the concrete structure being positioned in the channel formed between the first and second leg portions. A cup shaped member is formed along the outside surface of the first leg portion, a vertical steel rebar or anchor bolt, being positioned in the cup shaped member. Holes may be formed in the base member to receive fasteners to secure the member to the underlying wood frame member. Protrusions are provided on the bottom surface of the base member thus providing a space between the surface and adjacent top surface of said wood frame member to enable the device to be removed after the concrete sets.

Abstract: A structural support for supporting a planar substrate, for example plywood, is provided with a screw receiving channel. The channel provides a guide simplifying screw attachment for a substrate to the support.

Abstract: A removable support structure for concrete slab fabrication is described. A latch device secured to the ends of both shoring girders and shoring beams permits rapid and accurate placement of the shoring support across a span to be structured in concrete. Vertical shoring posts and supports are eliminated, with the added advantage of the plane of the shoring always being automatically in the plane of the floor being formed. Bearing shoes on the ends of corrugated deck members, secured to building girders, cooperating with straps at their other ends, accurately and securely positions the corrugated decking in place. After the concrete has hardened, the entire support structure, including the shoring girders, shoring beams, and corrugated deck members, are rapidly and efficiently removed, ready for re-use.

Abstract: A system and method for installing metal deck framing. One or more deck panels are secured with respect to and between two elongated structural framing members to form a deck panel structure. The deck panel structure is then positioned between two primary structural members in a position such that each structural framing member is suspended from a support arm or a support structure that is supported by a corresponding one of the primary structural members. At least each corner portion of the deck panel structure can be mechanically adjusted to vary a vertical position of the deck panel structure.

Abstract: The invention concerns a support for ceiling mold elements for concrete. It is effected in that, on both edges of its upper surface (2, 48) one row each of projections (3, 4, 53, 54) is provided for, the projections protruding upwardly and outwardly at separations from another and being suited for securing or attaching the ceiling mold elements (11, 29, 30) and in that the spaces between the projections (3, 4, 53, 54) correspond to twice the separation of an abutment, arranged on the underside of the mold element, from the edge of the mold element, and in that the distance between the projections (3, 4, 53, 54) matches the corresponding dimension of the mold element (11, 29, 30) to be placed in, or a fraction of this dimension. The invention furthermore provides for the surfaces of the support to be at least partially covered with a plastic cover strip.

Abstract: A floor form assembly is adapted for use in the construction of a concrete floor of a structure that is enclosed by surrounding walls, and includes a plurality of mounting devices adapted to be mounted on the surrounding walls at a top portion of the structure, a plurality of elongated girders connected removably and longitudinally to one another so as to be adapted to extend along a lengthwise direction of the top portion of the structure, a plurality of supporting ribs connected removably to the girders such that the supporting ribs extend transversely from opposite longitudinal sides of the girders and are disposed spacedly on the girders so as to be adapted to extend along a transverse direction of the top portion of the structure, a plurality of vertical form units, each being connected removably to distal end portion of one of the girders and the supporting ribs, the vertical form units being adapted to form an enclosing frame that is supported removably on the mounting devices and that is adapted to be

Abstract: The invention concerns a support with a removable support head for concrete moulding which exhibits, on its under side, an extension which engages a hollow section of the upper end of the support. The invention exhibits a spring-loaded ratchet (6, 16, 27) which is pivotably mounted on the extension (2), the ratchet engaging a stop (15) on the support to lock the mounted support head to the support.

Abstract: A formwork frame for supporting decking and a fresh concrete floor on the decking includes a horizontal beam whose upper surface contacts the concrete and a vertical shaft that supports the beam. The beam is formed in three separable extruded aluminium sections, a central section mounted on the shaft and a pair of outer sections. The central beam section has opposing ends mitred to converge in a downward direction, and each outer beam has an end mitered to meet one end of the central beam section. The beam has a horizontal channel in each of its sides, and a pair of horizontal ledges close the channels from below. A pair of extruded aluminum bridging members fit closely into the channels and are effectively reinforced by the beam sections to resist bending moments. Pins extend horizontally through the bridging members and the outer beam sections to secure the bridging members to the beam. The pins are not subjected shear forces or bending moments.

Abstract: Apparatus for supporting a form member extending perpendicularly to the longitudinal axis of a form carrier, in particular for supporting the side face of a truss form for concrete. The apparatus has a support frame and a clamping device connected to the support frame. A tightening device and a holding member are arranged in such a manner in a knuckle joint arrangement that, upon tightening, a prestressing path for the apparatus along the form carrier, and, thus a prestressing force perpendicular to the plane of the side face, ensues so that the gap between the side face and the base plate remains sealed in a reliable manner despite the concrete pressure, which arises. In a preferred embodiment, the truss holder is provided with an adjustable carrier adjustable in height, and which can be adapted to the required truss height.

Abstract: A modular building system for constructing the frame of a structure. Standardized foundation forms, vertical forms, and tie beam forms are attached to each other. The vertical forms are hinged so as to be capable of defining a corner of any angle. Cover plates are selectively inserted into the tie beam forms so as to define a reception recess which corresponds to the size of a roof truss being used. The various forms can be attached to each other with a minimal amount of labor.

Abstract: A concrete forming apparatus for use in construction of buildings having poured concrete floors spanning between two adjacent supports at a desired height is disclosed. The apparatus includes a frame having extensible strut members extending capable of temporarily fixing the height of the frame, supports for supporting and maneuvering the frame and rollers for rolling the frame along as the frame is flown from under the concrete floor up onto the concrete floor. The supports include a first trucking device adapted to engage the frame for raising the frame from a rest position whereby the frame is spaced above a floor surface to a pouring position whereby the upper deck is substantially at the desired height and for rolling the frame to a desired location. The supports further include a support device for supporting the frame while in the pouring position during the pouring and curing of the concrete floor having means for finely adjusting the height of the frame prior to the pouring of the concrete.

Abstract: A concrete supporting bridge overhang bracket system which can be lifted and transferred in gang fashion from a first section of a bridge after it has been formed to a subsequent section. The system includes a series of longitudinally spaced apart laterally extending overhang brackets to which concrete forms are secured. A lift bracket assembly is attachable to a pair of overhang brackets and can be clamped to the deck to support the overhang brackets and the forms from the deck so that the brackets can be disconnected from the deck. Once disassembled, the lift bracket assembly can be supported by a crane and unclamped from the deck, the crane thereafter moving the lift bracket assembly, the overhang brackets and the forms to the subsequent section. Also disclosed is a pivotably adjustable edge form which permits the outer edge of the deck to be vertically inclined irrespective of the horizontal inclination of the deck.

Abstract: Brackets for suspending a wooden joist at its ends from vertical bolts depending from hangers extending across bridge support columns are formed from rigidly joined side plates, a top plate and a bottom plate. The top plate has a tongue with a vertical hole through it for mounting the brackets on the bolts supported by opposite columns. The ends of the joist are inserted into the suspended brackets to support the joist between the columns. The brackets are relatively lightweight, inexpensive, easy to handle, not readily damaged and eliminate the need for clumsy, breakable and expensive telescoping steeljoists.

Abstract: A concrete form support assembly for the form structure needed to pour concrete for bridge floors and the like. Such form structures include a plywood flooring supported at a desired uniform depth relative to the plane of the upper surface of the bridge beams, depending on the thickness of the concrete called for by the specifications. The plywood flooring is supported by ledgers which extend laterally between the bridge beams and stringers on the top thereof which extend longitudinally and parallel with the bridge beams. The ledgers are supported by vertical bolts hanging from hanger bars on each side of each bridge beam, with support plates at the lower end of the vertical bolts to support opposite ends of the ledgers, and threaded nuts below the support plates to adjust the plates and ledgers thereon up and down. After the plywood flooring has been put in place, workmen cannot thereafter reach the adjusting nuts from above to make final depth adjustments of the flooring.

Abstract: An adjustable brace for supporting an elevated concrete form floor between support beams during the curing of the concrete is provided. The adjustable brace is formed from two legs which are connected together at their top to a cradle assembly such that the legs can move in scissors fashion with relation to each other. The brace also includes a device for adjusting the height of the legs or the height of the cradle or both. In use, the feet of the brace are placed at the web/flange interface of opposing facing support beams while the top of the brace provides support to a shoring member placed beneath the elevated form floor between the support beams.

Abstract: A concrete supporting bridge overhang bracket system which can be lifted and transferred in gang fashion from a first section of a bridge after it has been formed to a subsequent section. The system includes a series of longitudinally spaced apart laterally extending overhang brackets to which concrete forms are secured. A lift bracket assembly is attachable to a pair of overhang brackets and can be clamped to the deck to support the overhang brackets and the forms from the deck so that the brackets can be disconnected from the deck. Once disassembled, the lift bracket assembly can be supported by a crane and unclamped from the deck, the crane thereafter moving the lift bracket assembly, the overhang brackets and the forms to the subsequent section. Also disclosed is a pivotably adjustable edge form which permits the outer edge of the deck to be vertically inclined irrespective of the horizontal inclination of the deck.

Abstract: An apparatus and a method for holding, rotating and positioning a jack for the purpose of attaching said jack to one side of a structural support. The apparatus comprises a base and a holder. The base has a device to mount the base on the structural support. The holder is pivotally connected at one end to the base for displacement between a first location above said structural support and a second location at said one side. The holder has a receiver operable in a closed position to retain the jack as the holder is pivoted between said locations in order to position the jack for attachment to said one side of the structural support. The receiver is actuatable to an open position for removal of the holder from the jack after said attachment. The holder is displaceable from said second location back to said first location for removal of the apparatus from the support.

Abstract: A cradle for an adjustable brace used for supporting an elevated concrete form floor between support beams during the curing of the concrete is provided. The cradle is adapted to receive the upper portion of two legs such that the legs can pivot towards and away from each other in a single plane, to enable the lower portion of the legs to be placed for support against opposing support beams positioned at varying distances from each other. The cradle is also adapted to receive and support a shoring member for suppoting the concrete form floor. The cradle may be adjustable for supporting shoring members at varying heights.

Abstract: A hanger is disclosed for supporting a spanner beam or the like used in the construction of concrete platforms. The hanger can be a unitary device and comprise a pair of parallel side members, a top joist support interconnecting the side plates, an extension member projecting forward of the front edge of said side members, a bottom joist support member extending from one side member to the other, and a pivot means extending across the front of said side members. The front edge of each side member inclines rearwardly from top to bottom, and the pivot means is positioned so as to assure that the hanger is plumb when supporting a joist. The location of the pivot means also serves as a fulcrum point allowing the hanger to be removed after the platform construction is completed by means of a well-placed blow to the lower portion of the back of the hanger.

Abstract: An adjustable hanger for supporting a concrete form which includes a first bracket having a downwardly-extending portion for engaging an edge of an I beam flange, a second bracket for engaging an I beam flange, and a threaded rod screwed into and extending between the first and second brackets so that the second bracket can be adjusted in spacing from the first bracket to enable the hanger to accommodate a variety of I beam flange widths. In the preferred embodiment, the second bracket includes an upwardly extending portion having a wedge-shaped slot and an outer arcuate bearing surface. The upwardly extending portion receives a bolt for supporting cantilevered formwork and the bolt is retained within the slot by a nut which rests against the arcuate bearing surface. The retained bolt can be pivoted throughout a range of angular orientations relative to the second bracket as the circumstances of use may require.

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: To pour and set concrete slabs the form deck is chained to a light truck and the combination is supported between joists. The truck can be lowered while the slab is curing, and raised again before the combination is again lowered to be "flown" to another location.

Abstract: A hanger and bracket attached to the hanger for supporting formwork for steel and concrete during the curing stage of a bridge deck overhang is described. A hanger attached to the beam of the bridge supports a connector carrying the bracket. The connector is maintained in a substantially vertical position. The bracket is adjustable in both horizontal angle and in grade because of pivotally attached horizontal members, an adjustable compression leg, and connector means. Once the cement is set the bracket may be recovered for reuse.

Abstract: A reinforcement structure for reinforced-concrete buildings, comprises a servicing portion which can be dismantled and a fixed structural portion which shall remain embedded in the concrete casting and consists of an iron latticework which is also intended to support the servicing portion. The servicing portion comprises spacer elements and sidewall elements having stiffening reinforcements and members and elements are provided to releasably latching the spacer elements and the sidewall elements to the latticework framing. Such a reinforcement structure also makes possible a novel building method.

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: 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 method for forming a concrete deck includes top adjustable removable hangers depending from opposed walls, beams or girders to support length adjustable ledgers, which ledgers support deck joists and decking associated therewith and upon which concrete deck will be poured to form a slab supported upon the walls, beams or girders. Means are incorporated to permit assembly from the top of the hangers, ledgers, deck joists and decking and to permit vertical adjustment of the ledgers from the top to bring the decking to grade elevation. Further means are incorporated to permit disassembly of the hangers, ledgers, deck joists and decking from the bottom after cure of the poured concrete deck.

Abstract: Top adjustable removable hangers depend from opposed walls, beams or girders to support length adjustable ledgers, which ledgers support deck joists and decking associated therewith and upon which a concrete deck will be poured to form a slab supported upon the walls, beams or girders. Means are incorporated to permit assembly from the top of the hangers, ledgers, deck joists and decking and means are included in the hangers to permit vertical adjustment of the ledgers from above or below to bring the decking to grade elevation. Further means are incorporated to permit disassembly of the hangers, ledgers, deck joists and decking from the bottom after cure of the poured concrete deck.

Abstract: Apparatus for forming a concrete deck includes top adjustable removable hangers depending from opposed walls, beams or girders to support length adjustable ledgers, which ledgers support deck joists and decking associated therewith and upon which a concrete deck will be poured to form a slab supported upon the walls, beams or girders. Means are incorporated to permit assembly from the top of the hangers, ledgers, deck joists and decking and to permit vertical adjustment of the ledgers from the top to bring the decking to grade elevation. Further means are incorporated to permit disassembly of the hangers, ledgers, deck joists and decking from the bottom after cure of the poured concrete deck.

Abstract: An attachment for use in anchoring a safety belt on a vertically extending supporting member such as a frame member of a concrete wall form side includes a plate-like bracket member and a connecting member extending outwardly from one face of the bracket member. The bracket member is disposed on one side of the supporting member and projects outwardly beyond a vertical free edge thereof in use, while the connecting member is inserted through an opening in the supporting member, which may be an opening provided for other purposes in a frame member of a form side, for securing the attachment to the supporting member. An opening is provided in the projecting portion of the bracket member, and it serves to receive an element of a safety belt for connecting the belt to the bracket member.

Abstract: The bracket is of a U-shaped structure with an adjustably positioned plate for removably receiving a joist. The plate is held on a bolt which is threadedly received in another plate being held in the U-structure, and an L-shaped element is secured to the structure for depending the bracket from a beam.

Abstract: A joist hanger including a body with a supporting lip and with ribs for removably carrying a joist support, the body being arranged to removably receive a clamping member for securing the hanger to the upper flange of a steel beam. Also included is the method of constructing concrete decks made possible by the characteristics of the hanger.

Abstract: A form having a selectively adjustable curvilinear surface is provided by securing a flexible connection plate to the rear side of a flexible form panel and clamping the plate to a rigid waler to lock the panel in the desired curvilinear configuration. The connection plate is of angle-shaped cross-sectional configuration with a first flexible leg portion secured in parallel relationship to the flexible panel and a second leg portion disposed in normal relationship to the first portion. The second portion is excised at spaced intervals to accommodate flexing of the first portion and selectively clamped to the rigid waler to lock the first portion against flexing.

Abstract: An elongate soldier for concrete framework comprising two spaced parallel substantially U-section members interconnected back to back in such a manner as to leave between the members, at least one channel or passage extending along the length of the soldier from each of its ends.

Abstract: Concrete-slab forming means and more particularly improvements in means for supporting and adjusting the elevation of the forms for concrete roadway slabs which bridge the space between spaced-apart pairs of in-place girders. The forming means per se comprises a preferably plywood deck or decking disposed at a predetermined elevation and which extends between the girder pairs and is laid directly on joists in turn supported on purlins, (preferably "split" or spaced-apart purlins), extending between said girders.