Abstract: An impact-attenuating device includes a first energy-absorbing part having at least one first elongate body and at least one corresponding first energy converter to deform the first elongate body in the case of relative movement. A second energy-absorbing part has at least one second elongate body and at least one corresponding second energy converter configured to deform the second elongate body in the case of relative movement. A bumper is coupled to the first energy-absorbing part. The first and second energy-absorbing parts are positionable one behind the other. The first and second energy-absorbing part are mutually coupled such that the at least first and second elongate bodies are deformed at least partially simultaneously by respectively the at least one corresponding first energy converter and the at least one corresponding second energy converter when a vehicle crashes into the bumper.

Abstract: A method for screeding an uncured concrete surface includes providing a screeding machine having a screed head assembly movable over the concrete surface. A pair of elevation sensors disposed at opposite ends of the screed head assembly sense an elevation of the respective end of the screed head assembly. An angle sensor disposed at the screed head assembly senses a pitch angle and/or a roll angle of the screed head assembly. A gyroscope sensor disposed at the screed head assembly senses rotational velocity of the screed head assembly about a lateral axis and/or a longitudinal axis of the screed head assembly. A control determines pitch angle and/or roll angle of the screed head assembly. The control controls the screed head assembly based on the signals from one or both of the elevation sensors and the determined pitch and/or roll angles.

Abstract: A bollard assembly includes a bottom plate with a forward edge and an aft edge, an elongated member mounted on the bottom plate and extending from a forward end to an aft end in a direction from the forward edge toward the aft edge, a bollard secured to the bottom plate with a bollard section of the elongated member disposed inside of the bollard, bars mounted on the bottom plate on opposite sides of the elongated member, and a top plate having a smaller perimeter than the bottom plate mounted on the elongated member and the bars with the bollard extending above the top plate.

Abstract: A portable vehicle barrier is transportable to a desired location, unfolded from a compact transport configuration and deployed to provide an effective vehicle barrier that can be used temporarily and then refolded into the compact transport configuration and transported to a remote location for utilization or storage. The vehicle barrier is formed with a central base having front and rear sections that are pivotally hinged to the central base. A barrier member can be selectively activated to rise into an active position and restrain the passage of vehicles. An impact into the barrier member causes the central base to tip in order to drive pointed teeth into the tires of the vehicle and into the underlying road surface and stop the impacting vehicle. The front and rear sections have vertical bars that move into a nesting horizontal position when the front and rear sections are pivoted into the transport position.

Abstract: A selectively frictionally engaged hole cover for a bore hole cored from a paved surface that includes a cover plate configured to cover the bore hole and support vehicular traffic. An engagement mechanism is attached to the cover plate and extends down into the bore hole. The engagement mechanism is configured to be actuated by a user torque input that causes an engagement plate selectively shiftable relative to the cover plate to thereby shift an engagement member along a sloped wall and thus radially outwardly or inwardly, causing the engagement mechanism to selectively engage or disengage the wall of the bore hole. When the engagement member is in frictional contact with the hole, unintentional extraction of the engagement mechanism is prevented. The selectively frictionally engaged hole cover effectively provides a temporary cover for a bore hole in a road, parking lot, or other paved surface.

Abstract: Mats and methods associated therewith are described. The mats include a main body defined by a plurality of sidewalls and two exterior surface walls opposing each other. The main body includes a pattern of internal walls that define internal voids within the main body. At least one primary structural support rib is arranged within the main body and extends between the two surface walls and from one of the plurality of side walls to another of the plurality of side walls. The at least one primary structural support rib traverses the internal voids defined by the pattern of internal walls.

Abstract: An apparatus for screeding concrete to produce a level finished surface includes a frame assembly having a pair of spaced vertically oriented stabilization legs secured to the front end thereof supporting a generally horizontal front member. An extendable boom assembly is secured to said frame assembly at a first end and to a screed head at a second end. A side-step assembly includes an actuator with an extendable arm secured to said boom assembly to impart generally lateral motion.

Abstract: An expansion joint system for bridging an expansion joint gap between two spaced-apart, underlying building or roadway structures. The expansion joint system includes a cover plate, at least one swing arm, sliding bearings engaged with the swing arms, and fasteners for engaging the swing arms to the cover plate. The swing arms include a receiving well configured for receiving a mechanical fastener to fasten the swing arms to the cover plate. The expansion joint system permits movement in response to a seismic or thermal event that causes expansion or contraction of the gap between structural members while maintaining coverage of the gap, and following a seismic or thermal event, the maintains a substantially-centered position of the cover plate.

Abstract: A vehicle barrier includes a first post and a second post each having a top end and a planar wall, a barrier beam extending longitudinally in a same vertical plane as the first post and the second post and the barrier beam separating an attack side from an asset side, a first post connection attaching the barrier beam to the first post, the first post connection comprising a first beam plate extending from a first end of the barrier beam, a first post plate extending from the planar wall of the first post, and a first pin vertically disposed in the first beam plate and the first post plate, and a second post connection attaching the barrier beam to the second post.

Abstract: A barrier system includes a handrail, and a connector to couple the handrail to a post extension that extends upward from a floor. The handrail has and end with a width measured in a direction transverse to an elongate length of the handrail. The connector includes a socket to hold the end of the handrail. The socket is defined by an elongate channel that extends in a direction substantially parallel to the post extension when the connector is attached to the post extension. The channel has a length that is greater than the width of the end of the handrail.

Abstract: A curb former (10) includes a rotatable drive shaft (20), a gutter drum (80), and a curb profiling drum (100). The gutter drum (80) is secured to the drive shaft (20) such that the drive shaft (20) and gutter drum (80) rotate together. The curb profiling drum (100) is detachably secured relative to both the drive shaft (20) and the gutter drum (80). This configuration allows one curb profiling drum (100) to be replaced with another curb profiling drum (100) to change the profile of a curb resulting from a curbing operation using the curb former (10).

Abstract: A traffic control device, for use with a roadway receiving vehicles travelling longitudinally along the roadway, includes a housing mounted transversely across the roadway with an upper supporting surface that supports the vehicles rolling over the housing. A tire puncturing frame comprised of a shaft supporting tire puncturing members thereon is rotatable within the housing between stored and working positions of the tire puncturing members relative to the upper supporting surface of the housing. Offset counterweights are coupled to the frame to bias the tire puncture members towards the working position. A latch bolt threaded into a threaded aperture in the housing selectively retains the tire puncturing frame in the stored position.

Abstract: Aspects of the invention relate to a vehicle security barrier system for hostile vehicle mitigation. The vehicle security barrier system comprising: a panel; first and second support members; and a reinforcing arrangement.

Abstract: A block includes a first block portion, a second block portion, a third block portion and a fourth block portion. The first block portion has a first upper surface, a second upper surface, and a lower surface. The second block portion is over the first block portion and has a third upper surface. The third block portion is over the first block portion and has a fourth upper surface. The fourth block portion is over the first block portion, has a fifth upper surface, and is positioned between the second block portion and the third block portion. A first recessed region is between the second block portion and the fourth block portion. A second recessed region is between the third block portion and the fourth block portion. The first upper surface is exposed in the first recessed region and the second upper surface is exposed in the second recessed region.

Abstract: Apparatus and methods related to mats and connects are described. The apparatus include a mat having a top side, a bottom side, and an interior defined between the top side and the bottom side, and at least one connector post extending within the interior of the mat, wherein the at least one connector post comprises a connector pin cavity extending within the interior of the mat and configured to receive a connector pin and at least one locking structure configured to engage with a portion of the connector pin and secure the connector pin to the at least one connector post.

Abstract: A barrier transition framework such as for use as a bridge transition, is disclosed for connection to a concrete anchor at an entrance, comprising a tubular upper transition chord having first and second beveled ends, and a tubular lower transition chord having first and second beveled ends. The first beveled ends of each of the upper and lower chords are welded to an approach deflector. The second beveled ends of each of the upper and lower chords are welded to an anchorage plate. A transition assembly is formed by connecting thrie-beams to the road-side of the transition framework. A thrie-beam may also be connected to the field-side of the transition framework. The disclosed transition framework provides a preassembled solid four bar structure with exceptional resistance to deflection in both the vertical and horizontal planes, that spans a greater distance than convention transitions.

Abstract: A regenerative speed bump includes a flat base portion and a sloped cover portion which together form a cavity to house a regenerative energy mechanism therein. The sloped cover portion is flexible and configured to deflect downward upon application of force. The regenerative energy mechanism includes a main gear having an axis of rotation and an inner ring of ratchets, a plunger positioned along the axis of rotation and rotates the main gear by motion thereof along the axis of rotation, and a pawl configured to allow the inner ring of ratchets and the main gear to rotate in only one direction. The plunger is mechanically connected to the sloped cover portion such that the plunger moves down along the axis of rotation when the sloped cover portion deflects downward.

Abstract: A block-type modular ramp is to be provided in a place where a step or bump is formed. The block-type modular ramp includes block bodies arranged in a horizontal direction and stacked vertically to form a backbone, a fastening member for fastening the block bodies arranged in the horizontal direction to each other, a fixing pin for fixing the block bodies stacked vertically to each other, a fixing member coupled to the block bodies and fixing the block bodies to a floor surface where to install the ramp, fastening grooves formed in the block bodies, and fixing holes formed in the block bodies in an up-down direction.

Abstract: A vehicle barrier includes a longitudinally extending beam positioned vertically above a ground level and separating a protected side from an attack side, the beam comprising beam sections, each of the beam sections comprising a web oriented generally parallel to the ground level, a line post positioned on the attack side and comprising a bottom end positioned in a concrete foundation and a frame, a line brace having a first brace end located with the frame and a second end secured in the concrete foundation such that the line brace and the concrete foundation form adjacent sides of a vertex on the protected side, and adjacent beam sections pivotally connected to each other at the frame and the first brace end.

Abstract: A vehicle barrier includes a beam extending longitudinally between opposing end posts, the beam positioned vertically above a ground level and separating an asset side from an attack side, the beam comprising beam sections and a crash post positioned in a same vertical plane as the beam, wherein beam sections are pivotally connected to the crash post.