A lean-to rigging apparatus is described for installation in a shaft, such as an elevator shaft, having a wall and including at least one sill opposite the wall. The rigging apparatus includes a spanning beam, a sill support structure, a wall support member, and a hoist connector. The sill support structure on a first end of the spanning beam is designed to seat against a sill in the in the shaft while the wall support member on a second end of the spanning beam abuts against the opposite shaft wall. The sill support structure is rigidly connected to the spanning beam in a hingeless configuration and can seat against a sill in a plurality of seating positions. These seating positions allow the rigging apparatus to be positioned in a plurality of angles and therefore to be installed in shafts of different dimensions. The hoist connector is configured to allow a connection to a hoist device for hoisting various materials from one level to another within the shaft.

A support strut for a void platform providing support across a building void is disclosed including an elongate support member having two opposed ends and floor mounting brackets mounted on each end. Each floor mounting bracket includes a hollow tube forming a mounting formation for mounting on the support member, and an angle section, including a wall plate on which the tube is located and a transverse flange, for mounting on an external support. The flange of one floor mounting bracket is positioned uppermost for extending across an upper surface of a bottom plate of a wall frame, and the other horizontal mounting bracket is inverted so that the flange is positioned lowermost for extending across a floor adjacent to the void. A void platform including a support strut and a deck joiner bracket is also disclosed.

A deck device and a method to access a pit ladder are described. An elevator pit deck device includes a platform configured to move between a stored position and an operational position; the platform installable in a channel; the stored position being a folded or retracted configuration; the platform, when in the operational position, extending between a channel opening and a wall of the channel. In some embodiments, the channel is an elevator hoistway, the channel opening connects the elevator hoistway and an elevator landing sill, the wall of the channel is proximate to a pit ladder, and the pit ladder is extendable towards a pit of the elevator.

A deck device and a method to access a pit ladder are described. An elevator pit deck device includes a platform configured to move between a stored position and an operational position; the platform installable in a channel; the stored position being a folded or retracted configuration; the platform, when in the operational position, extending between a channel opening and a wall of the channel. In some embodiments, the channel is an elevator hoistway, the channel opening connects the elevator hoistway and an elevator landing sill, the wall of the channel is proximate to a pit ladder, and the pit ladder is extendable towards a pit of the elevator.

A building site device includes a climbing formwork platform for the floor-by-floor production of concreting portions of a building core having at least one elevator shaft. An elevator system has an elevator machine platform vertically movable in the elevator shaft. In order to minimize the use of lifting cranes and the manual raising of supporting structures, the elevator machine platform can be moved jointly with the climbing formwork platform.