SH was hired to carry out the framing and shoring of the 21st floor of a structure already completed by the construction company with its own equipment. Structure in ribbed slab 0.35m high and robust beams measuring 0.60m x 1.35m, 0.30m x 1.80m supported on a ceiling height of 6.48m (20° floor) with three advances without support. The structure’s advances measure 1.80m, 3.35m and 4.75m, all with edge beams measuring 0.20m x 1.20m.
Floor area is 400m².
The building structure faced significant challenges on the 21st floor due to a lack of support on three sides that projected beyond the periphery of the tower.
This required the use of cementing and shoring of the structure’s slabs and beams, supported by metal beams for smaller overhangs and trusses to overcome the larger overhang. Furthermore, the two ends of the unsupported structure required trusses with a cantilever of 6.20m, supported on the 19th floor slab with a height of 9.70m.
To support and support slabs extending outside the building
(known as cantilevered slabs), we use different types of supports,
depending on the size of the extension. The projects included the use of anchor bars, metal and aluminum profiles, with holes already made in the slabs and load calculations at each point of the cantilevers.
For advances of 1.80m and 3.35m, we used metallic profiles of type W310, while for larger advances of 4.75m, we opted for a truss of type SH 100. To fix these supports to the slabs, we drilled holes in the slabs already built. and we calculate the loads that each support point should
to support.
Furthermore, to support a part of the structure that extended
6.48m, we had to use a special piece of aluminum – Lume prop with
extender. However, due to the presence of very heavy maple beams on the 21st floor, we had to take additional measures. We had to reinforce the entire support of the cantilevered slabs, from the 18th to the 5th floor, to guarantee the safety of the structure. These decisions were taken after consultations with a specialized structural engineer, who specified the direction in which the concrete should be applied and recommended dividing the construction of the high beams into two stages to guarantee the stability and quality of the work.
The scope of work included the shoring of the helipad slab and the re-shoring of subsequent floors, with the execution of cantilevered slabs at a height of more than 50 meters. We use a variety of equipment such as SH 100 trusses, LTT, EXTRA and Modex load towers, W profiles, C profiles and accessories, carefully coordinating them to ensure the success of the project. CATALÃO – GO Client: GVC CONSTRUTORA LTDA EXECUTION After defining the projects with the client, we carefully plan the supply of essential equipment for the construction site. SH played a crucial role, organizing the transport of the SH 100 trusses directly from the Belo Horizonte unit to the construction site. Precise planning, efficient transportation and strategic equipment selection highlighted SH’s excellence in executing this complex project.
The SH team was fully involved in a challenging project that involved the top floor of a 21-story building, with extensive cantilevers using SH 100 trusses. This equipment was chosen because it is lighter than the W profile, and because it is modular. , facilitating movement and assembly. This truss reaches longer lengths than metal profiles, thus reducing the reaction and puncture in the client’s slab.
The client and the team closely followed the development of the projects, the execution of loads and calculations, and monitored the work full time. Logistics were managed with precision, ensuring safe equipment in perfect condition. The project was a success from conception to paving, thanks to the team’s dedication and meticulous attention to detail.
21ST FLOOR AREA
DOUBLE RIGHT STANDING
TONS OF BALANCE ON CONSTRUCTION
SH is recognized for the quality and efficiency of its services in large works. But we are not the ones saying that. The person saying this is one of the professionals involved, who had a partnership with SH.
During the construction of the Baixo Guandu/ES a 14 meter span over the railway, without the use of a structure supported on the ground, as we could not interrupt the flow of trains on either of the two existing lines.
After much discussion and field visits by the SH Tecnica team, we came up with a modular proposal with support towers and trusses, which proved to be a great solution, as we needed a system that was quick to both assemble and disassemble, as during assembly of the truss modules, the railway operation gave us only two hours of train flow interruption on the two railway lines.
Congratulations to the entire SH team that participated and helped us overcome this great challenge!
