A pier maintenance system and a structural maintenance system are provided. The pier maintenance system is configured to maintain elongate members of the pier (e.g. piles). The pier maintenance system includes a delivery module, configured to navigate between the elongate members; and a maintenance module, coupled to the delivery module, and configured to navigate along the elongate members, to maintain the pier.

A bridge cap which for fastening to a bridge has a fastening unit with a fastener and with a guide device that includes a cylindrical anchor sleeve. This invention also relates to a fastening unit for fastening a bridge cap. The fastening unit is composed of separate individual parts, which in addition to the anchor sleeve, include a separate transition piece that has a first cylindrical section adapted to the diameter of the anchor sleeve and a second cylindrical section oriented away from the first and oriented toward an outside of the bridge cap.

A bridge cap which for fastening to a bridge has a fastening unit with a fastener and with a guide device that includes a cylindrical anchor sleeve. This invention also relates to a fastening unit for fastening a bridge cap. The fastening unit is composed of separate individual parts, which in addition to the anchor sleeve, include a separate transition piece that has a first cylindrical section adapted to the diameter of the anchor sleeve and a second cylindrical section oriented away from the first and oriented toward an outside of the bridge cap.

A mobile platform carrying system is configured to be adjusted to remain level. The mobile platform carrying system includes a chassis, attached to a front axle assembly and a rear axle assembly. The front axle assembly includes a front axle housing through which a front axle telescoping portion extends. A first front wheel housing is joined to the front axle telescoping portion, and a first front actuator. The first front actuator is adapted to adjust a front linear position of the first front wheel housing relative to the chassis. A first front wheel is joined to the first front wheel housing with a first front hinge. The rear axle assembly is similarly arranged.

A mobile platform carrying system is configured to be adjusted to remain level. The mobile platform carrying system includes a chassis, attached to a front axle assembly and a rear axle assembly. The front axle assembly includes a front axle housing through which a front axle telescoping portion extends. A first front wheel housing is joined to the front axle telescoping portion, and a first front actuator. The first front actuator is adapted to adjust a front linear position of the first front wheel housing relative to the chassis. A first front wheel is joined to the first front wheel housing with a first front hinge. The rear axle assembly is similarly arranged.

A connector for connecting a panel of a bridge platform or other scaffolding to an underlying cable for supporting the panel. First and second plates are hingedly joined. A member is attached to and extends from the first plate to a free end portion, wherein the member is adapted to be passed downwardly through a panel and cradle a cable passing below the panel then to be passed upwardly back through the opening then through an aperture in the second plate. A wedge is slidably receivable between ledges on the free end portion and the second plate for wedgedly retaining the member in the aperture. A member is attached to the second plate in a position such that it retains the wedge inseparable from the plates. The plates and wedge are inseparable from each other in each of latched and unlatched states.

A system and apparatus for constructing a work platform under a bridge deck that has a decking segment that moves under the bridge deck from one end to the other as work progresses, eliminating the need for constructing decking under the entire length of the bridge deck. The decking segment hangs from a plurality of trolleys that move along a plurality of rails beneath the bridge deck, the trolleys moving the decking segment from one end of the bridge deck to another. The trolley has at least one main wheel that runs on the tubular rail top and a plurality of side wheels that maintain the trolley on the tubular rail, the trolley smoothly moving along the tubular rail.

The present disclosure relates to a falling and death leap defense rotating cylinder system, including a supporter; a rotator that is rotatably installed in the supporter, and that inhibits a death leap of a death leap attempter by rotating when grasped by the death leap attempter; and a spiked unit that forms a cutting edge, and that is detachably installed in any one or more of the supporter and the rotator. According to the present disclosure, by the spiked unit detachably installed in the supporter or the rotator, a falling and death leap of a death leap attempter may be inhibited more effectively.

A work platform system for implementation in relation to a structure, as well as subsystems and components thereof and methods of implementation and use relating thereto, are disclosed herein. In at least one embodiment, the work platform system includes a first pair of flexible elements and a second pair of flexible elements, where a respective first end of each of the flexible elements is coupled at least indirectly to a first support component and a respective second end of each of the flexible elements is coupled at least indirectly to a second support component. The work platform system can further include a plurality of panel structures supported upon the flexible elements, a suspension component, and a clamp structure coupled to at least one of the first pair of flexible elements and the second pair of flexible elements. The work platform system can include one or more support extension.

A system and apparatus for constructing a work platform under a bridge deck that has a decking segment that moves under the bridge deck from one end to the other as work progresses, eliminating the need for constructing decking under the entire length of the bridge deck. The decking segment hangs from a plurality of trolleys that move along a plurality of rails beneath the bridge deck, the trolleys moving the decking segment from one end of the bridge deck to another. The trolley has at least one main wheel that runs on the tubular rail top and a plurality of side wheels that maintain the trolley on the tubular rail, the trolley smoothly moving along the tubular rail.