Abstract: A formwork system (100) includes a rebate board (105) having a generally L shaped profile in end view, the rebate board (105) having a first arm (110) and a second arm (120), the first and second arms (120) being angled at about 90 degrees relative to each other, the second arm (120) being securable to an upper portion of a formwork bottom board (200). The system (100) includes a brace (400) having a first engagement formation (410) configured to engage with the first arm (110), and a second engagement formation (435) configured to engage with a peg (220) or other fixed member.

Abstract: A system for paving a bridge comprising a screed rail configured to support a concrete paver and a plurality of adjustable width barrier brackets to support the screed rail with a bridge barrier, where each adjustable width barrier brackets comprise a rail support bracket and an “L” barrier bracket which allows for width adjustment by translation of the rail support bracket through the “L” barrier bracket.

Abstract: A bridge system uses foundation structures that are formed of the combination of a metal-frame structure and cast-in-place concrete. The metal-frame structure of the foundation is capable of supporting bridge units before pouring of concrete.

Abstract: A method of forming a concrete panel that includes forming a concrete base with a plurality of holes, where the plurality of holes are distributed proximate to a perimeter of a casting surface of the concrete base, and securing casting rails along the casting surface of the concrete base to form a concrete panel form with a closed perimeter. The casting rails are secured using a plurality of anchors through the plurality of holes in the concrete base to couple the casting rails to the concrete base. A reinforcement device and/or an attachment device is introduced within the concrete panel form, and concrete is poured into the concrete panel form. After the poured concrete has solidified into a concrete panel, the concrete panel is removed.

Abstract: The present invention is directed to a flexible concrete form system having both flexible and rigid parts that are easily assembled and disassembled using a multi-contact point connection system. The concrete form system can be extended or stacked in a wide variety of configurations to accommodate almost any desired concrete shape.

Abstract: A computer control system in a paving machine determines a location, long slope (pitch), cross-slope (roll), and elevation (with respect to reference surface) of the machine with reference to a plurality of sensors. The long slope, cross slope and elevation are compared to values from a design surface (horizontal alignment, vertical profile, and cross sections) using the location of the machine to query the design data. Deviations from measured orientation and elevation to the design (desired values) are determined for each elevation cylinder of the paving machine based on the sensor data using constrained geometric control algorithms that predict future deviations. Corrections are applied to bring the actual location, long slope, cross-slope and elevation to within acceptable tolerances of the desired values. Sensors are associated with specific legs, with some sensors associated with more than one leg, such that sensor values may be averaged to reduce error.

Abstract: The present invention is directed to a flexible concrete form system having both flexible and rigid parts that are easily assembled and disassembled using a multi-contact point connection system. The concrete form system can be extended or stacked in a wide variety of configurations to accommodate almost any desired concrete shape.

Abstract: A retainer apparatus and method is disclosed for retaining a form mold on a surface, the form mold includes a front form, a back form, and a face form that are all parallel to one another. The apparatus includes a planar beam having a leg end portion, an opposing riser end portion, and a transition portion positioned therebetween. Also included is a foot extension that is slidably coupled to the leg end portion, allowing a selectable lengthening of the beam that engages the front form. Also included in the apparatus is an arm that is rotatably coupled to the riser end portion, the arm retains the face form in position against the transition portion, wherein the riser end portion also retains the back form.

Abstract: A target piece for sealing mechanical penetrations in single ply roofing membranes is provided. The target piece comprises a left piece and a right piece, or a single unified piece. The left piece can be applied on one side of the one or more mechanical penetrations, and the right piece can be applied on an opposite side of the one or more mechanical penetrations. Alternatively, the unified piece can be applied on the one or more mechanical penetrations. Left and right curb elements are attached to a top of the left piece and right piece, respectively. Faces of the left and right pieces are sealed to each other and faces of the left and right curb elements are sealed to each other using an adhesive/heat seal, thus forming a pocket around the mechanical penetrations, and then sealant is poured into the pocket to seal the mechanical penetrations. Extensions are provided on ends of either the right or left pieces of the target piece to provide extra insurance against water leakage.

Abstract: An overhead hanger unit for concrete forms, with a first hanger form having a first portion engagable with a first curb form and a second portion extending from the first portion, and a second hanger form having a first portion engagable with a second curb form and a second portion extending from the first portion. A pin may be carried on the second portion of the first hanger form and a slot may be formed in the second portion of the second hanger form, wherein the second portion of the second hanger form may be aligned with the second portion of the first hanger form and the pin engaged with the slot. A coupling device may be engagable with the pin to secure the first hanger form to the second hanger form at a selected position such that a distance from the first curb form to the second curb form may be adjusted by an amount substantially equal to a length of the slot.

Abstract: A drainage catch basin is formed from a rectangular trough with a planar upper rim defined by at least two opposite sidewalls and includes at least one inner wall forming a lower rim to define the gutter opening for flush mounting with the curb. The basin is covered by a top with a planar bottom that preferably includes a central circular manhole cover. The top is preferably formed by first providing a mold having a bottom and side frame of steel plates reinforced by a galvanized steel nosing and crossing rebar. The mold is then filled by concrete casting while installed on the catch basin trough to match the exterior color and/or finish of the adjacent sidewalk, street and/or curb.

Abstract: A gutter block structure of the present invention has a configuration in which a vegetable fiber layer made of palm fibers or the like is integrally attached to an inner surface of a water-permeable concrete material, sidewall surfaces which serve as the inner surface are formed into a stepped shape, and a bottom surface which serves as the inner surface is formed into an irregular shape. Further, both the sidewalls are formed into a curved shape or S-shape. Thus, when a water channel is formed by the gutter block structures, the supply and drain of water between the water channel and the surrounding soil is enabled, the flow velocity of water can be reduced, and zones with different flow velocities can be provided. Thus, an environment at the water channel and around the water channel can be closer to a natural condition, and an environment for growing underwater creatures can be brought into a fairly good condition.

Abstract: An overhead hanger unit for concrete forms, with a first hanger form having a first portion engagable with a first curb form and a second portion extending from the first portion, and a second hanger form having a first portion engagable with a second curb form and a second portion extending from the first portion. A pin may be carried on the second portion of the first hanger form and a slot may be formed in the second portion of the second hanger form, wherein the second portion of the second hanger form may be aligned with the second portion of the first hanger form and the pin engaged with the slot. A coupling device may be engagable with the pin to secure the first hanger form to the second hanger form at a selected position such that a distance from the first curb form to the second curb form may be adjusted by an amount substantially equal to a length of the slot.

Abstract: A landscape edging form assembly for forming a concrete edging in place, includes first and second sidewalls and a series of flexible connectors extending between and interconnecting the sidewalls. The flexible connectors are spaced apart from each other in the direction of the length of the landscape edging form and enable the landscape edging form to be extended from a non-erected width where the flexible connectors are in a slack condition to an erected width where the flexible connectors are in a taut condition. Preferably, the sidewalls and the interconnecting flexible connectors of the landscape edging form assembly are a prefabricated component of the assembly. Another form assembly includes bendable sidewalls, spacers, and positioning brackets and is used to form a sinuous concrete landscape edging in place.

Abstract: A molding device for placement of formed cementitious material such as concrete on a mounting surface. The device is used in combination with a supply of pressurized cementitious material communicated through a hose from a conventional cement pump or the like. It features a mold unit having an a compression chamber at a first end communicating with an extrusion chamber at a second end. Cement material is forced into the compression chambers from the cement pump and extruded from the exit orifice of the extrusion chamber. The device is propelled forward by the pressure from the injected cement against the front of the device and away from the formed material means control any upward travel of said mold unit caused by said internal pressure against said top wall. Weights may be added to the top of the device to limit upward travel and a steering mechanism may be added to the front of the device to steer it on a defined course.

Abstract: A prefabricated one-piece metal frame and funnel drain is constructed for curb and gutter use. The frame may be constructed in a number of styles, with a particular style selected to match the desired curb form. The funnel drain also includes a variety of styles in order to accommodate different drain pipe orientations and configurations. When welded together, the frame and funnel drain may be mounted within any standard curb and gutter form such that curb and gutter installation and drain pipe installation may be accomplished simultaneously, without any preparatory concrete work required for placement of the frame and funnel drain.

Abstract: A multi-section form for casting sewer inlet ports to manhole standpipes with right, left or bi-winged curb sections. The form includes multiple sections which can be arranged to segregate the form interior to cast inlets with a preferred arrangement of one or more curb extension wings. Pre-assembled rebar and manhole port assemblies mount within the arranged form sections, along with a multi-section form which defines a top cover and inlets to a center manhole port. An extension form wall at the manhole port assembly defines an overflow conduit. The casting form is supported to a low profile casting table which defines a bottom form wall and includes a hydraulic lift for tilting the table top to eject a cast part.

Abstract: An adjustable mold for casting stairways of concrete enables the total length of a stairway and also the dimension of the separate steps to be adjusted. The mold includes a longitudinal horizontal frame supporting two identical parallel articulated arm systems positioned scissor-like and being linked together at intersection points of arms of the system along a longitudinal center axis thereof. At oppositely located and linked outer ends of the arms are provided pivotable supports for a number of step units, each of which includes an upstep and an instep. An inner edge of each instep substantially by its own weight rest against the upstep of an adjacent step unit. The total length of the articulated arm link system may be adjusted, thereby simultaneously adjusting the distance between adjacent step units. Also, the angular position of the step units relative to the support frame can be adjusted.

Abstract: A foundation brace and securing device capable of holding both wall forms and foundation forms in position is disclosed. The brace allows one person to pour one continuous piece of foundational concrete.

Abstract: A hanger for constructing concrete curb forms and form from a continuous metal rod bent so that the hanger can be attached to a backboard and faceboard and secured to a backboard stake to position and support the faceboard.

Abstract: A system of forms for pouring a concrete bond beam, curb and gutter in the construction of a concrete swimming pool to have waterline and curb tiles in place. A set of form boards is provided which define the bond beam waterline, gutter line and curb line. Each form board includes a panel of styrofoam rabbetted to temporarily hold, by means of adhesive tape, a plurality of tiles. The form boards are maintained in a preselected spacing by a plurality of transverse support frames temporarily attached to the form boards. Concrete is poured into the assembled forms to form the bond beam having a gutter and curb, and adheres to the back of the tiles. Upon removal of the form system, the bond beam with attached tiles is ready for finishing. The form system is reusable.

Abstract: A system for constructing concrete barriers on a roadway with adequate spacing between sections of the barrier for proper drainage and expansion of the concrete during changing atmospheric conditions. The process utilizes a specially designed positioning tool to leave a proper space in a latice framework of steel rods. A temporary, removeable core or separating section, made of for example a styrofoam inner layer sandwiched between outer layers of "Masonite," designed for this purpose and matched with the positioning tool is inserted into the space and secured there using pins attached to the metal latice works providing an unbroken, constant surface or mold on which to pour concrete for the barrier. When the concrete has set, the core may be collapsed without damaging the concrete or metal frame and removed. When the various cores are removed, the barrier is left with properly spaced and positioned gaps for drainage and expansion of the concrete.

Abstract: Moulding tool for making an article from vibrated concrete optimized as regards strength, the article having embedded therein a tubular sleeve located by a pin during the moulding process. The moulding tool is designed to keep the interior of the sleeve free from concrete and to decrease wear and mechanical stress exerted on the pin during the moulding process. Such a moulding tool is characterized in that, during the moulding process, the pin extends through a sealing and dampening body made from an elastic or semi-hard material, the sealing and dampening body having sealing engagement with the pin. The sealing and dampening body is compressed by the sleeve so that a sealing engagement is achieved between one end of the sleeve and the sealing and dampening body and between the other end of the sleeve and a surface of the moulding tool.

Abstract: Metal supports (1), are provided to rest on the ground and to removably support metal forms (2). These supports are provided with screw (4) and nut (9) means used for accurately adjusting in elevation the forms. Removable struts (16) are used to fix the gap or spacing between parallel forms and tension wires (17) going through the forms are used to secure the forms during the casting of the concrete. Means are provided to stretch and secure (20, 21) these wires with respect to the forms.This apparatus allows to make a slab of which the upper face is perfectly horizontal and at the level desired, with a minimum of time devoted to the setting in place and removing of the apparatus.

Abstract: This invention pertains to a method and machine for slip forming concrete wall structures such as median barrier walls for highways. The slip form comprises a pair of opposite side walls each of which has a skirt member retractable and extensible relative to the lower portion thereof. A top wall separate from the side walls is mounted on the machine frame between the upper portions of the side walls, and each side wall and associated skirt member is movable as a unit relative to the top wall and each skirt member is independently movable relative to an associated side wall. The side walls are adjustably supported on the machine frame for adjustment laterally of the machine frame to accommodate top walls of varying widths and the top wall is verticaly adjustable relative to the machine frame independently of the side walls.