An automated building washing device generally includes a spray bar assembly coupled to a window washing swing stage. The spray bar assembly is horizontally movable from end-to-end along the longitudinal direction of a window washing swing stage while spray heads rotate so that a relatively large portion of building surface can be quickly cleaned. The spray bar assembly includes a hollow rotating bar and spray heads inside of a shroud so that the bar can rotate as water or cleaning solution is sprayed onto the building surface for cleaning.

A side rail assembly useful for securing a deck of a scaffold comprises a side rail configured to be supported between two ladder frames in first and second orientations. The side rail includes first and second support surfaces for supporting the deck in the first and second orientations, respectively. First and second vertically aligned slots are formed in respective opposing surfaces of the side rail. The side rail assembly further comprises a locking pin assembly comprising a shaft, a locking tab, and a biasing member to bias the locking tab into engagement with the deck and secure the deck against one of the support surfaces of the side rail depending on the orientation. The locking pin assembly is configured to be removably engaged with the first and second slots of the side rail in both the first and second orientations.

A side rail assembly useful for securing a deck of a scaffold comprises a side rail configured to be supported between two ladder frames in first and second orientations. The side rail includes first and second support surfaces for supporting the deck in the first and second orientations, respectively. First and second vertically aligned slots are formed in respective opposing surfaces of the side rail. The side rail assembly further comprises a locking pin assembly comprising a shaft, a locking tab, and a biasing member to bias the locking tab into engagement with the deck and secure the deck against one of the support surfaces of the side rail depending on the orientation. The locking pin assembly is configured to be removably engaged with the first and second slots of the side rail in both the first and second orientations.

Preceding guardrail for a scaffolding system for buildup of a scaffold bay. The guardrail assembly comprises a guardrail, a base part, a mounting system for mounting of the base part to a part of the scaffold bay, at least a first post and a second post, and a lifting arm. The guardrail extends along a longitudinal axis. The base part extends substantially parallel to the longitudinal axis of the guardrail. The first and second post are each pivotably connected to the guardrail by a first pivoting point and pivotably connected to the base part by a second pivoting point, whereby the guardrail, the base part, the first, and the second post together form a parallelogram link system. The lifting arm is fixedly connected with the first post and extends in line with the first post from the second pivoting point away from the first pivoting point.

Preceding guardrail holder for a scaffolding system, configured for cooperation with guardrails provided with a fastening hook at a longitudinal end. The preceding guardrail holder includes a first and a second cross connection element extending perpendicular to a mounting plate and a retaining plate, which cross connection elements are mutually spaced apart and together bound a fastening hook receiving space for receiving in the fastening hook receiving space the fastening hook of a first guardrail. The distance between the first and the second cross connection element is such that, if the fastening hook is received in the fastening hook receiving space and the first guardrail is not supported otherwise, a recess on a radial inner side of the fastening hook rests on the first cross connection element, and a radial outer side of the fastening hook abuts against the second cross connection element, the first guardrail thereby being wholly supported by the single preceding guardrail holder.

A walkway installation includes a walkway assembly which includes at least one tread module supported by a pair of spaced apart elongate supports which extend in the direction of the length of the walkway installation, the walkway installation additionally including a handrail assembly including a handrail which extends in the direction of the length of the walkway assembly and a plurality of spaced apart posts which each secure the handrail relative to the walkway assembly, the handrail assembly additionally including a first connector which secures a post to one side of the walkway assembly and the first connector having secured thereto a substantially inflexible transverse link which extends across the walkway assembly in a direction perpendicular to the length of the walkway installation, the transverse link extending to a second connector secured to the other side of the walkway.

Various embodiments and features of railing systems are provided. For example, the railing system may be disposed around industrial/commercial equipment (e.g., rooftop condensing unit) that includes a baserail near the bottom of the industrial/commercial equipment and may be disposed on a structural support. The railing system may include a plurality of vertical supports extending from the baserail or structural support to above a top portion of the industrial/commercial equipment; railing extending between the vertical supports; and an attachment system to attach the vertical supports to the baserail or structural support so that the vertical supports are configured to distribute any weight received directly to the baserail or structural support via the attachment system.

Various embodiments and features of railing systems are provided. For example, the railing system may be disposed around industrial/commercial equipment (e.g., rooftop condensing unit) that includes a baserail near the bottom of the industrial/commercial equipment and may be disposed on a structural support. The railing system may include a plurality of vertical supports extending from the baserail or structural support to above a top portion of the industrial/commercial equipment; railing extending between the vertical supports; and an attachment system to attach the vertical supports to the baserail or structural support so that the vertical supports are configured to distribute any weight received directly to the baserail or structural support via the attachment system.

A handrail, in particular for scaffolding structures, for example stairway scaffolding structures, includes at least two handrail segments connected to one another by a connection unit to provide a continuous handrail, wherein at least one handrail securing element for securing the handrail segment to a scaffolding element is secured to at least one of the handrail segments, wherein the connection unit includes two connection elements that can pivot relative to one another about a pivot axis, wherein at least one connection element is/can be connected to one of the handrail segments connected to one another via the connection unit such that it can rotate about an axis of rotation that is not parallel and not orthogonal in relation to the pivot axis.

A handrail, in particular for scaffolding structures, for example stairway scaffolding structures, includes at least two handrail segments connected to one another by a connection unit to provide a continuous handrail, wherein at least one handrail securing element for securing the handrail segment to a scaffolding element is secured to at least one of the handrail segments, wherein the connection unit includes two connection elements that can pivot relative to one another about a pivot axis, wherein at least one connection element is/can be connected to one of the handrail segments connected to one another via the connection unit such that it can rotate about an axis of rotation that is not parallel and not orthogonal in relation to the pivot axis.