Abstract: Various embodiments of an adjustable mold are disclosed for forming a precast concrete top panel for a modular earth retaining wall, for example but not limited to, a modular mechanically stabilized earth (MSE) retaining wall. The adjustable mold has a support base with a top surface, bottom surface, and surrounding periphery. A plurality of rails is mounted to the support base and upstand generally perpendicular from the support base. The rails are collectively attached together to form a closed lateral side boundary with an open top designed to receive liquified concrete. The support base and rails are designed to form sides of the precast concrete top panel. The rails can be adjusted to change a geometric shape associated with the closed lateral boundary in order to enable production of different top panels having different lateral boundaries, and therefore geometries.

Abstract: Various embodiments of an adjustable mold and method for making precast concrete traffic barrier panels with different geometries are disclosed. The panels are used for creating a continuous traffic barrier by placing the panels in a contiguous side-by-side arrangement adjacent a roadway atop a modular earth retaining wall. Each traffic barrier panel has a body with at least front, back, top, bottom, left, and right sides. The mold body has a plurality of walls that define an interior chamber, a door opening to the interior chamber, and a concrete inlet to the interior chamber. The door is designed to be installed on and to be uninstalled from the mold body to respectively close and open the door opening. The door has left side and right side forming panels that are designed to define respectively a left side two-dimensional geometry and a right side two-dimensional geometry of the left and right sides respectively of a traffic barrier panel to be made.

Abstract: An apparatus for leveling a concrete screed having a frame and a screed head secured thereto includes a plurality of vertically adjustable leveling legs driven by a plurality of electrical actuators responsive to a command supplied by a user interface.

Abstract: The present invention provides improved paving vehicles for following a supply truck for use in paving asphalt roadways. The paving vehicles of the present invention need not be transported on a trailer, and are capable of traveling at low or relatively high speeds on their own. This is accomplished through the use of novel chassis and propulsion systems having two rear axles, with each axle coupled directly to its own hydraulic motor, such that each of the two hydraulic motors provides power to one axle. Embodiments of the invention also include reciprocating conveyor apparatus and methods, such that the conveyor apparatus may be moved to a lowered position to receive the gravity discharge of materials from a hopper and supply truck during a paving operation, and moved to a raised position in order to provide a wide margin of ground clearance when driving the paving vehicle, or loading or unloading the paving vehicle from a trailer.

Abstract: An apparatus for steering and driving a concrete screed having a frame and a screed head secured thereto includes a plurality of spaced drive wheels rotatably and pivotably secured to the frame at a plurality of points, and a steering member coupled to one or more of the drive wheels for controlling the directional orientation thereof.

Abstract: A specialized curb forming tool and a method of using the tool to simply and easily create custom concrete curbing of any shape and length without complicated equipment or specialized expertise.

Abstract: A concrete curb forming and extruding apparatus with wheel adjustment locks, and an adjustable slip form system shaping cementitious material into a continuous curb forced there through by an extruder which receives materials stored in a hopper with dasher. The extruder has a rotary trowel compacting member which continually forces material from the hopper into compressed concrete passing through an adjustable slip form to fill the same and form differing shaped continuous curbing underneath fences or against vertical surfaces or conventional curbing, depending upon the slip form setting.

Abstract: A device for concreting and molding gutters includes runners configured to slide over ground. A mold forms the concavity of a gutter and a hopper, with a closure for pouring of concrete into a trench previously excavated in a form of the gutter. The runners have an extendable, rear extension configured to be raised and lowered by a hydraulic cylinder, with the runners further including sides. The sides forming lateral parts of a concreting hopper and a means of attachment for vibrators for vibrating the concrete. The mold includes a structure for attachment to the sides of the runners and to an arm of a backhoe or tow machine, with the mold structure complemented by plates, attached using hinges to the structure of the mold and using pipe turnbuckles, enabling variation of inclination of the mold.

Abstract: An automotive construction machine, in particular a slipform paver or a road milling machine, has at least one front running gear and one rear running gear in the working direction. As the construction machine advances, the lifting systems of the front running gear are extended or retracted such that the machine frame remains in a predetermined orientation to the surface of the ground in the longitudinal direction. Irregularities in the ground surface are detected as the construction machine advances, and the position of the front lifting systems, predetermined by the control or regulating unit, is monitored to keep the machine frame in a predetermined orientation to the ground surface. As the construction machine advances, the control of the rear lifting systems is engaged with a time delay subject to the control of the front lifting systems.

Abstract: A slip-mold having a housing having (a) concrete hopper having (b) means for distribution of quick set concrete within said hopper, (c) a mold cavity, and (d) at least one tunnel, in communication with said mold cavity, and extending through said housing from the leading to the trailing end of said housing. The tunnel through the housing is of sufficient height and width, and positioned within said mold housing, to permit rebars, extending from an iron work array, to pass through said mold cavity without becoming embedded in concrete, concurrent with the formation of a slip formed concrete structure on a portion of said iron work array.

Abstract: A slipform paver includes a chassis 2 able to be adjusted in the heightwise direction and having a mounting unit 10 arranged on the chassis for fastening on an arrangement 8 for molding flowable material. The slipform paver is characterised in that the mounting unit 10 for fastening on the concrete mold 8 is mounted on the chassis 2 of the paver to be pivotable on an axis 14 extending in the direction of operation of the slipform paver. To produce parts of a structure whose orientation varies along their length, the concrete mold fastened 8 to the mounting unit is pivoted on the axis of pivot 14 by means of a pivoter unit 15 whereas the chassis of the paver maintains its orientation.

Abstract: A curb forming machine with parts which may be mounted in different positions on a frame so that curb may be laid on the left or right side of the frame outside the frame, and on the left or right side inside the frame. A feed hopper delivers curb forming material either directly to an auger housing, for curb formed inside the frame sidewalls, or first to a side chute and then to the auger housing, for curb formed outside the frame sidewalls. A curb forming mold is attached to the auger housing. Adjustable height wheels allow the machine to move along a surface for forming curb.

Abstract: An apparatus for shaping pavement, the apparatus comprising a pavement-shaping member for receiving a flow of shapeless pavement material and generating a flow of shaped pavement material and a paving machine mount, mechanically coupled to the pavement-shaping member, for coupling the pavement-shaping member to a paving machine, the pavement-shaping member comprising a detachable forming shoe for producing the shaped pavement material.

Abstract: A slip forming curbing machine includes a hopper and slip former selectively raised or lowered as a unit relative to a wheeled frame. A grader is movably connected to and supported by the frame, the grader having a grader portion selectively slidably movable to extend beyond the frame. Sensors attached to and extending from the frame are used to control movement of the machine and operation of several components, including mechanism for raising and lowering the hopper and slip former.

Abstract: A manual curbing device includes a box-shaped hopper with an open top and bottom. The hopper is for receiving asphalt concrete via the open top. A pair of skids is each attached to opposite sides of the bottom of the hopper on the exterior thereof. The bottom portion of the front of the hopper has an opening of predetermined size to permit the expulsion of the asphalt concrete by gravity. The device includes at least one flat thin removable interchangeable extrusion curb forming plate having an opening sized and shaped to form the cross-sectional size and shape of a curb to be extruded. A pair of L-shaped curb forming plate retaining brackets are operatively attached in predetermined position to opposite exterior sides of the hopper proximate the front thereof to form a slot for receiving the flat removable interchangeable extrusion curb forming plate. A rear handle is operably attached to the back of the hopper.

Abstract: An apparatus for attachment to dump trucks having a dump bed and a chute for discharging material onto a road shoulder and/or roadway. The apparatus allows the truck with a single operator to perform shoulder and/or roadway surfacing and/or repair by receiving and grading repair material into place. The attachment being adjustable as to pitch, width and depth of the repair material. The attachment being adjustable to allow a greater or lesser amount of material to be applied to a shoulder closer to the roadway surface if a deeper fill is required. The apparatus allows for rotational movement between the apparatus and the dump truck in a direction parallel to the roadways length and perpendicular to the roadways surface. The tires of the dump truck being utilized to compact the repair material. The apparatus being stored in a vertical position when not in use.

Abstract: A curb forming machine for use by a single operator to form curved curbing includes a single rotatable curb-forming roller, a handle assembly for pulling and maneuvering the roller, and a motor for rotating the roller. The roller includes a generally cylindrical body, a neck at one end of the body, and a shaping surface, all of which are coaxial. The motor rotates the roller so that the lower periphery of the roller moves toward the direction of pulling to shape and smooth wet concrete into curbing. An overflow guard prevents wet concrete from flowing over the roller onto the finished curb, and an alignment device extends outwardly from the roller to contact a form member. A curb forming method includes pulling and steering such a roller around a curved form, including around tight curves in the form.

Abstract: A hand-controlled, curb forming machine that is transformable between different widths and geometries, and between different wheel configurations, to accommodate different concrete curbing. A downwardly projecting, rotating head that rotates about an axis perpendicular to the slab shapes raw concrete into appropriately styled and contoured curbs. A machine frame slidably receives an adjustable, wheeled subframe. A roller on the opposite frame side rides on an opposite curb form. A pivoted handle is reversible. The electric motor is adjustably secured to the frame by a mounting plate movable within follower slots in the frame. A removable adaptor plate disposed on an opposite frame end supports the machine when not in use, but can be removed for normal curb work exposing a form riding roller. When the machine is deployed with monolithic curbs without rebar, the adaptor plate can mount to the subframe to raise the machine by lowering the wheels.

Abstract: Embodiments of the present invention are directed to a curb forming system used to construct a curb made out of concrete or similar material that has a consistent finished shape and width. The curb forming system can be used to make decorative curbs for landscaping or other building projects. The curb forming system includes a first elongated form and a second elongated form for setting a width of a curb. The curb forming system also includes a shaped trowel that has a handle, a shaping surface, a hook guide to position the trowel on the first elongated form, and a level guide structured to position the trowel on the second elongated form. The hook guide and level guides may be structured to slide along the first and second elongated forms, respectively, so that the shaping surface is used to form the building material into a consistent shape.

Abstract: A portable concrete molding machine can extrude concrete moldings of a range of widths by the provision of one or more tunnel plates within the mold, the machine being provided with respective pusher plates that have pusher faces of widths complementary to the effective widths of the mold. A pair of links connect a gearbox to the pendulum arms of the pusher means to ensure even driving force applied to the pusher plates as they undergo reciprocating movement to allow concrete to flow from a hopper through a mouth of the mold and to extrude the concrete from the mold, the machine being advanced in an extrusion direction by the extrusion of the concrete from the mold.

Abstract: A hand-controlled, curb forming machine that is transformable between different widths and geometries, and between different wheel configurations, to accommodate different concrete curbing. A downwardly projecting, rotating head that rotates about an axis perpendicular to the slab shapes raw concrete into appropriately styled and contoured curbs. A machine frame slidably receives an adjustable, wheeled subframe. A roller on the opposite frame side rides on an opposite curb form. A pivoted handle is reversible. The electric motor is adjustably secured to the frame by a mounting plate movable within follower slots in the frame. A removable adaptor plate disposed on an opposite frame end supports the machine when not in use, but can be removed for normal curb work exposing a form riding roller. When the machine is deployed with monolithic curbs without rebar, the adaptor plate can mount to the subframe to raise the machine by lowering the wheels.

Abstract: A form for receiving a filler material to create an island is provided. The form is made essentially entirely out of galvannealed steel that is easily paintable. The form has a substantially continuous wall having an outer surface and an inner surface. The wall is made out of a plurality of galvannealed steel wall sections. The wall has a first side and a second side opposite the first side. The inner surface forms an enclosed chamber for receiving the filler material. A first support made out of galvannealed steel is attached to the inner surface of the first side of the wall and a second support made out of galvannealed steel is attached to the inner surface of the second side of the wall. A brace made out of galvannealed steel is disposed between the supports, wherein the brace removably engages the supports.

Abstract: A sidewalk grader provided for grading a sidewalk base disposed along a curb of an existing road structure. The sidewalk grader comprises a tracking assembly fixable to a vertically adjustable backfill blade of a compact excavator positioned to move forward over an existing road structure to advance the sidewalk grader. The tracking assembly comprises a vertically adjustable tracking means disposed for engagement with the top surface of the curb, to provide a reference point. A grading assembly is mounted to the tracking assembly. The grading assembly comprises a frame, and a grading blade rotatingly mounted to the frame to permit adjustment of slope of the blade. An adjustable link connects the grading blade to the frame to adjustable fix their relative position.

Abstract: A method for renovating a well curb by lifting it to a first position, whereafter a compressible device is positioned around the well curb. Hereafter the well curb is lowered to a second position so that the compressible device is abutting the upper edge of the well, whereafter a casting material is injected into the cavity between the surface dressing and a filling around the well. Finally the well curb is lowered to a third and final position. Also, a compressible device for use in the method.

Abstract: A curb forming machine for use by a single operator to form curved curbing includes a single rotatable curb-forming roller, a handle assembly for pulling and maneuvering the roller, and a motor for rotating the roller. The roller includes a generally cylindrical body, a neck at one end of the body, and a shaping surface, all of which are coaxial. The motor rotates the roller so that the lower periphery of the roller moves toward the direction of pulling to shape and smooth wet concrete into curbing. An overflow guard prevents wet concrete from flowing over the roller onto the finished curb, and an alignment device extends outwardly from the roller to contact a form member. A curb forming method includes pulling and steering such a roller around a curved form, including around tight curves in the form.

Abstract: A curb forming machine for use by a single operator to form curved curbing includes a single rotatable curb-forming roller, a handle assembly for pulling and maneuvering the roller, and a motor for rotating the roller. The roller includes a generally cylindrical body, a neck at one end of the body, and a shaping surface, all of which are coaxial. The motor rotates the roller so that the lower periphery of the roller moves toward the direction of pulling to shape and smooth wet concrete into curbing. An overflow guard prevents wet concrete from flowing over the roller onto the finished curb, and an alignment device extends outwardly from the roller to contact a form member. A curb forming method includes pulling and steering such a roller around a curved form, including around tight curves in the form.

Abstract: A method and apparatus for laying a curb is disclosed. The apparatus features a preferably tracked vehicle (tractor) that connects to a frame having a hopper. A hydraulic lifting arrangement enables hydraulic controls on the vehicle to elevate/lower the frame. The frame has a hopper for receiving wet concrete and a curb shaping portion that shapes the wet concrete into a curb shape. A specially configured interface maintains attitude of the frame during use.

Abstract: A slipform sled for paving street curbs and gutters has a hopper and a curb and gutter mold. A pivoting mold assembly having a standard curb elevation mold and a driveway curb elevation mold is mounted on the slipform sled. The pivoting mold assembly pivots on a shaft oriented parallel to the direction of motion of the slipform sled. Paving material is flowed into the hopper and is extruded through the standard curb mold or the driveway curb mold while the sled is moving providing a smooth uniform finish. Only the relatively small transition section between the standard curb and driveway curb needs hand finishing. The elevation of a vibrator in the hopper is changed to correspond to the elevation of the curb extruded.

Abstract: The present invention is a curb and gutter concrete form system. Embodiments of the curb and gutter concrete form system may include lateral, radius and/or divider brackets. The present invention is useful for forming curb and gutter structures along linear and curved street edges. Features of the invention include adjustment for various gutter configurations including spill and catch, modular design and reusability.

Abstract: Method and apparatus for securing a building foundation form disposed on a moisture barrier membrane. The method includes the steps of positioning one end of a concrete form stake in a mating structure of a plug, penetrating the moisture barrier membrane with a tip end the plug, and forming a seal between a flange extending around a periphery of the plug and the moisture barrier membrane.

Abstract: A pavement ramp edge maker, paving machine and related method are provided for generating a pavement edge ramp that is equal to or less than approximately 45° relative to a surface upon which the ramp is formed. The edge maker generates a ramp that is partially compacted using a compaction member that is independently vertically movable against a bias during operation. When the pavement mat is compacted, the resulting ramp has an angle that is equal to or less than approximately 45° relative to a surface upon which the ramp is formed.

Abstract: A concrete extruder attachment for a vehicle includes a hopper adapted to hold flowable concrete. The hopper has an upper concrete inlet and a lower concrete outlet. A slip form is connected to the lower concrete outlet. An internal vibrator causes concrete to flow from the hopper through the lower concrete outlet to the form. A mounting is provided which is adapted to mount to a vehicle. A hopper support is secured to the hopper. The hopper support is pivotally mounted to the mounting for pivotal movement between a first position with the hopper extending toward a first side of the vehicle and a second position with the hopper extending toward a second side of the vehicle. The support is selectively locked in one of the first position or the second position. The ability to pivot the hopper enables the concrete extruder to access corners.

Abstract: A system and method to allow a paving machine to form tight radii in continuous extrusions such as curbs and gutters is disclosed. A shift cylinder is used with the steering mechanism of a typical paving machine to allow sharp radius turns. The steering cylinder is used to pivot the track of the paving machine about its leg and the steering cylinder is used to pivot the leg relative to the frame of the paving machine. A hydraulic circuit is operator activated to allow fluid flow through a flow divider to ensure each cylinder operates in concert.

Abstract: A form assembly for forming a concrete structure during drying of the concrete. The form assembly is formed of an elongated plastic form having a front wall for engaging the concrete and a rear wall. The front wall is spaced apart from the back wall to define a pocket for receiving at least one connecting member. The connecting member is secured in the pocket to project a distance beyond an end of the form. A slidable stake holder may also be provided to slide in a C-shaped pocket in the form. The stake holder has right and left flanges that abuttingly engage the rear wall and at least one preformed nail hole is provided in each of the right and left flanges.

Abstract: A device for receiving and pushing hardenable material through a channel defined by a mold of the device to form a curb having an outer surface, and an attached steering assembly consisting of a steering arm coupling wheel supports attached to the device, and adjustment assembly associated with the steering arm and the device for defining different turning radiuses of the wheel supports.

Abstract: A curb or other structure is formed by a moving slip form mold receiving material used to form the structure from a hopper. The slip form mold includes two portions pivotally connected to each other. In one configuration, the slip form mold portions form a straight structure and in another configuration they are employed to form a curved structure.

Abstract: A ditch forming apparatus makes the finishing touches on the ground work whereat the ditch is to be formed, pours the concrete, screeds the concrete, and finishes the surface of the concrete. The apparatus uses a hopper with and open top and an open bottom to receive as well as pour the concrete. An extension on the front of the apparatus has a pair of sloped sides joined by a flat bottom making the final shaping of the ground prior to concrete pour. The back edge of the open bottom screeds the concrete while a skid attached to the rear of the apparatus finishes the surface of the poured concrete, the skid having surfaces that are generally parallel with the sides of the extension.

Abstract: A chassis having a main member carries adjustable side members defining an area for the reception of berm forming particulate material conveyed by an air flow from a remote source. The discharged material forms a continuous berm of constant size and shape. Wheel assemblies are adjustably carried enabling the berm cross-sectional shape to best suit the job requirements. Forward travel to the apparatus may be imparted by a steerable tongue assembly.

Abstract: A moveable tailpiece for use in association with a slip form on a curb forming machine. The tailpiece is selectively rotatable from a parked position, away from the slip form, to an engaged position at the end of the slip form. The tailpiece has the profile corresponding to a lowered curb profile as required to form, for example, a driveway access or handicap ramps. Utilizing the tailpiece in a curb formation considerably reduces the amount of manual finishing work required to produce an acceptable curb.

Abstract: An assembly of concrete forms for use in the placement of concrete, the assembly having a pair of longitudinal form members and a ground engaging member that is in contact with at least one of the longitudinal form members. A first longitudinal form member slidably overlaps a second longitudinal form member such that the length of the combination of longitudinal form members is adjustable. Inverted U-shaped channels are provided at the top of each of the longitudinal form members which allow a male/female overlapping relationship and provide a location to receive the ground engaging member. A radius form member includes a longitudinal form member with a horizontal component or inverted U-shaped channel having successively spaced apart slots thereon, so that the radius form member is flexible. To create an angle, a corner forming bar is also provided for the assembly, extending between two of the longitudinal form members.

Abstract: A flexible form assembly for forming concrete structures during setting of the concrete is provided. The flexible form assembly includes an elongated form having a front side for engaging the concrete and a rear side. The rear side includes a back wall disposed between two rearwardly extending top and bottom walls which, in turn, are connected to downwardly and upwardly protruding lips respectively to form a C-shaped pocket for receiving a stake holder. The stake holder includes right and left flanges that abuttingly engage the back wall and that fit between the top and bottom walls and that are partially disposed between the upper and lower lips and the back wall. The stake holder further comprises a pocket portion that is connected to and disposed between right and left flanges. The pocket portion extends outwardly to define an apex which provides a looped pocket for receiving a stake.

Abstract: A system and method to allow a paving machine to form tight radii in continuous extrusions such as curbs and gutters is disclosed. A shift cylinder is used with the steering mechanism of a typical paving machine to allow sharp radius turns. The steering cylinder is used to pivot the track of the paving machine about its leg and the steering cylinder is used to pivot the leg relative to the frame of the paving machine. A hydraulic circuit is operator activated to allow fluid flow through a flow divider to ensure each cylinder operates in concert.

Abstract: A device for receiving and pushing hardenable material through a channel defined by a mold of the device to form a curb having an outer surface, and an attached steering assembly consisting of a steering arm coupling wheel supports attached to the device, and adjustment assembly associated with the steering arm and the device for defining different turning radiuses of the wheel supports.

Abstract: A motor grader can be adapted for laying down a layer of granular material such as base rock or cold mix asphalt by mounting a dispensing hopper attachment onto the front of the motor grader and a spreading and leveling screed onto the moldboard. As the motor grader advances, it pushes a dump truck that continuously loads materials into the hopper. Those materials are in turn continuously discharged at a metered rate of flow through the bottom of the hopper and onto the roadbed. The resulting swath of materials passes between the front wheels of the grader as the grader continues to advance, whereupon the screed engages the swath and spreads the materials in opposite lateral directions while leveling them to the desired depth.

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 ditch forming apparatus makes the finishing touches on the ground work whereat the ditch is to be formed, pours the concrete, screeds the concrete, and finishes the surface of the concrete. The apparatus uses a hopper with and open top and an open bottom to receive as well as pour the concrete. An extension on the front of the apparatus has a pair of sloped sides joined by a flat bottom making the final shaping of the ground prior to concrete pour. The back edge of the open bottom screeds the concrete while a skid attached to the rear of the apparatus finishes the surface of the poured concrete, the skid having surfaces that are generally parallel with the sides of the extension.

Abstract: An apparatus for continuously shaping and extruding a longitudinally extending curb of moldable material. The device provides a self-contained and self-powered platform for modular curb forming inserts of multiple disciplines including auger extrusion and vibratory slip form. Moldable material is supplied to a feed hopper for the modular auger/slip form inserts that creates and dispenses a shaped curb bed. Leveling sensors and guides compensate for irregular surface gradients maintaining the orientation of the formed curb shape.

Abstract: The curb forming and extruding machine forms continuous concrete edging while reducing and/or substantially eliminating voids, flat spots or weak areas caused by smoothed sections in the packed concrete. Also, concrete bridging in the hopper, and the associated problems, are reduced and/or eliminated. The curb forming machine includes a plunger which is driven along a path of travel including a forward position to force the curb forming material from the lower hopper section into and through the curb extrusion mold, an upward position so that the plunger extends into the upper hopper section, and a rearward position away from the curb mold and in the lower hopper section. The plunger extending into the upper section of the hopper eliminates concrete bridging and also scores the concrete as it packs it into the mold.

Abstract: A contouring device and method for contouring three-dimensionally curved surfaces includes an elongated contouring assembly that is supported at opposite ends by a pair of fluid cylinders. The fluid cylinders are controlled to raise and lower the ends of the contouring assembly independently of each other, thereby allowing the contouring assembly to create a three-dimensionally curved surface as it passes over an area to be contoured. The control of one of the fluid cylinders is based on a comparison of the measured position of a first end of the contouring assembly with a profile of the surface to be leveled that is stored in a computer memory. The measurement of the position of the first end of the contouring assembly is achieved by a tracking device which tracks the position of a target positioned on the first end of the contouring assembly and which determines the three dimensional position of the target.

Abstract: A moveable tailpiece for use in association with a slip form on a curb forming machine. The tailpiece is selectively rotatable from a parked position, away from the slip form, to an engaged position at the end of the slip form. The tailpiece has the profile corresponding to a lowered curb profile as required to form, for example, a driveway access or handicap ramps. Utilizing the tailpiece in a curb formation considerably reduces the amount of manual finishing work required to produce an acceptable curb.