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Standing proudly in central London, 122 Leadenhall Street, nicknamed the Leadenhall Building, graces the skyline at 225 meters (738 ft) in height. Crafted by Rogers Stirk Harbour + Partners, this architectural marvel opened its doors in July 2014. Affectionately known as The Cheesegrater, its iconic wedge-shaped design mirrors that of its culinary namesake. Amidst the bustling financial district of the City of London, it joins the ranks of other towering structures like 20 Fenchurch Street, 22 Bishopsgate, and The Scalpel, showcasing the dynamic evolution of the construction landscape.
Our Abseiling Work
City Abseiling Ltd played a pivotal role in the groundbreaking Leadenhall project, marking its inception in 2012. This architectural marvel boasts a distinctive profile, characterized by a tapering, perimeter-braced diagrid structure. This innovative design houses the office floors in conjunction with a northern support core that accommodates passenger and goods lifts, service risers, on-floor utilities, and essential plant infrastructure. Notably, the office floors seamlessly integrate with the structural tube at every level, eliminating the need for additional perimeter columns.
The primary structural grid, measuring 16m x 10.5m, creates expansive and adaptable spans, an achievement unattainable through traditional core structures. Remarkably, only six internal columns are requisite for the largest floors, underscoring the project's engineering prowess. The distinct hues of the exposed steelwork serve as a visual demarcation between office and service spaces.
Project architect Andy Young expounded on the development of the external mega-frame, enabling the realization of a non-standard floor plan. This strategic approach culminated in the creation of an expansive public space at the base of the structure, underscoring the project's commitment to both aesthetics and functionality.
For City Abseiling Ltd, the Leadenhall Project commenced its journey in 2012, culminating in our involvement until 2014. We worked alongside façade companies Cornelius and Yuanda, with more than 20 skilled technicians on-site at any given time. Our tasks encompassed a diverse array of challenges, beginning with the intricate installation of Mega Brackets on each of the mega floors. This complex endeavour necessitated a high number of abseilers due to the intricacies of the steel beam design and construction, which posed obstructions.
Following this, our team meticulously executed glass installations and mastic works, spanning from the ground level to the towering pinnacle at the 52nd floor of the Mega frame structure, addressing all client-specific requirements characteristic of a specialized company like City Abseiling.
A crucial and ongoing aspect of our work entailed comprehensive water testing, ensuring the structural integrity and safety of the high-rise Leadenhall as other teams forged ahead with their respective tasks.
Miles of gaskets were meticulously installed by our technicians, spanning the entirety of the rear lift shafts from ground level to level 47. This undertaking involved dedicated day and night shifts, ensuring the project's relentless progress.
Subsequently, our efforts extended to the installation of steel safety nets on levels 47 to 52 at the rear of the building, further solidifying our commitment to safety and precision.
Further milestones included the installation and fitting of a majority of loft sections in Leadenhall's plant room (levels 47-52). These activities were necessitated by the unique design constraints that limited access for other trades.
Moreover, City Abseiling contributed to the project's intricacies by assisting in the installation of glass on levels 1 and 2, positioned beneath the escalators. These tasks required adept utilization of beam clamps for rigging, located on the undersides of beams adjacent to the soffit panels.
Lastly, our role extended to encompass internal lift shaft cleaning and glass replacement works, a testament to the comprehensive expertise City Abseiling Ltd brings to complex and multifaceted projects such as the Leadenhall masterpiece.
One Nine Elms, an imposing mixed-use skyscraper scheme, is currently taking shape in the vibrant district of Nine Elms, London. Initially conceived by Wanda One, a UK-based subsidiary of Dalian Wanda, the project witnessed a significant transition in ownership when it was acquired by R&F Properties, another prominent Chinese corporation, in 2018. This dynamic development has been meticulously designed by the esteemed architectural firm Kohn Pedersen Fox.
City Abseiling embarked on a crucial role within the One Nine Elms project, commencing its involvement in June 2020, and as of the writing of this article in September 2022, remains an integral part of the ongoing construction process.
Bracket install and set-out
Their multifaceted contributions span a spectrum of complex tasks that have been integral to the project's success.
Among the myriad challenges undertaken by City Abseiling from the project's inception are comprehensive water tests conducted across all levels and elevations, alongside the intricate installation of waterproofing systems. Their expertise extends to the precise placement of glass elements, including crane tie locations, on various levels of the tower. Moreover, they have played a pivotal role in the installation and replacement of stone units, encompassing all levels and elevations. The replacement of glass panels at multiple levels and elevations further demonstrates their proficiency, as does their work on glass unit adjustments and the installation of podium sides, spanning from level 6 to the pinnacle.
One remarkable feat achieved by City Abseiling was the meticulous planning, design, and fabrication of a purpose-commissioned Abseil Rig tailored to the specific needs of the site. This temporary rigging davit arm served as a pivotal tool for abseilers, enabling them to gain access to the facade with precision and safety. Positioned at a crucial three-meter distance from the structure, it provided the necessary location and orientation for abseilers to install the buttresses, which were lifted from the tower crane.
In essence, City Abseiling's involvement in the One Nine Elms project embodies their commitment to delivering innovative solutions and impeccable craftsmanship in the realm of architectural construction. Their contributions are a testament to the intricate tapestry of skills and expertise that converge in the creation of iconic skyscrapers like One Nine Elms.
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City Abseiling Ltd, Germany Office
Franfurt am Main 60322
Mob: +44 (0) 79 161 40 950
