Various implementations described herein are directed to a formwork system. In one implementation, the formwork system includes aluminum extrusions and aluminum castings. The aluminum castings and the aluminum extrusions can be assembled by being pressed and riveted together.

The present disclosure provides a combined prefabricated reinforced concrete stair mold and a splicing method. The combined prefabricated reinforced concrete stair mold comprises a bottom mold platform (1), wherein an upper platform module (2), a tread module (3) and a lower platform module (4) which are spliced with one another are sequentially arranged on the upper surface of the bottom mold platform (1), and corner modules (5) are arranged between the upper platform module (2) and the tread module (3) and between the tread module (3) and the lower platform module (4); the tread module (3) comprises a tread upper surface mold (6) and a tread lower surface mold (7); and the tread lower surface mold (7) comprises a plurality of combined templates (8) formed by mutual splicing, and the tread upper surface mold (6) comprises a plurality of tread splicing pieces (9) formed by mutual splicing.

A building assembly configured to assist in the preparation of material such as sand or snow for the subsequent sculpting or formation of an object therefrom. The present invention includes a body that has elements that are releasably secured to create an interior volume for receipt of sand or snow and subsequently be removed to expose the compacted sand or snow. The building assembly of the present invention includes a base member having external wall members surroundably mounted thereto creating the interior volume foe the sand or snow. Disposed within the interior volume are vertical support members that are secured to the bottom of the base member and extend upward therefrom. A top assembly is secured to the upper end of the vertical support members to ensure alignment thereof. The external walls are removable after filling the interior volume with sand or snow providing access to be sculpted.

A method for repairing a multi-sided structure protruding from a first surface. The method comprises mounting a retainer to the first surface, coupling a first brace connector component of a first brace to a first panel, coupling the first panel to a primary retainer connector component of the retainer, coupling a second brace connector component of the first brace to a secondary retainer connector component of the retainer, and introducing a curable material into the space between the first panel and the multi-sided structure, the first panel acting as at least a portion of a framework for containing the curable material until the curable material cures to provide a repair structure cladded, at least in part, by the first panel.

Various implementations described herein are directed to a formwork system. In one implementation, the formwork system includes aluminum extrusions and aluminum castings. The aluminum castings and the aluminum extrusions can be assembled by being pressed and riveted together.

The present invention corresponds to a formwork mechanism for casting and molding concrete, comprising a coffer having a sheet and four plates around the sheet perimeter. Each plate has holes arranged on its front face. Also, the formwork mechanism includes a structural element, connected to one of the plates by fixing means. On the other hand, the structural element has lateral perforations that are aligned with the holes of one of the coffer plates. Fixing means pass through the holes and side holes. The structural element may be a beam, a three or four-beam T, and combinations thereof. On the other hand, using several coffers interconnected with structural elements, formworks are constructed for casting flat reticular slabs; and also for curved reticular slabs with greater slab thickness near the beams supporting the slabs in comparison to the span of the slabs.

Concrete form assemblies having insulating foam panels are created using locking members embedded within the insulating foam panels and ties each having a pair of side rails for coupling two insulating foam panels together at a predetermined distance apart, the locking members and side rails being adapted so that either side rail can be coupled to either locking member and either of the ends of the rails and locking members can be toward the top or bottom of the assembly when the rails are coupled to the locking members.

Implementations of the of the present stripping corner may include a first forward surface, a second forward surface, hingedly connected to the first forward surface, a first rearward surface, hingedly connected to the first forward surface, a second rearward surface hingedly connected to the second forward surface, and an extender coupling the first rearward surface to the second rearward surface. The extender may be configured to receive an input torque about a first axis and may be configured to provide an output force along a second axis. The first axis may be substantially perpendicular to the second axis.

A fastening system including a tool and at least one insert. The tool may include an input shaft having a hardness and an output shaft having the same hardness as the input shaft. The input shaft and the output shaft may be connected to each other and may define an internal tube along a longitudinal axis of the tool. A cylindrical insert may define a receiving tube that is configured to receive the output shaft.

The invention relates to a corner shuttering element with two limbs (12, 14) arranged at an angle to each other, on the outer edge of which limbs (12, 14), edge strips (16, 18) are arranged that can be retracted and extended by means of articulated levers (24, 26), wherein the edge strips (16, 18) can each be aligned and fixed in their position by means of a plurality of locking elements (34) arranged distributed over the height of the corner shuttering element, and wherein the locking elements (34) are arranged on guides (32) for pull-out webs (30) of the edge strips (16, 18).