Mennica Cable Wall is Largest in Poland

The new Mennica Legacy Tower three-story lobby façade in Warsaw is Poland’s largest glass cable net wall, opened in 2019. Class A office space inside the highrise tower can be entered via the one-way cable wall system, which has partial curved areas and utilizes a transparent glazing that “blurs the boundary between interior and exterior space” (Goestsch Architects, Chicago). LED provided full proof engineering structural & façade detailing review, including 1:1 IGU glass warp tests and 1:1 cable deflection & tension tests to assure high safety of the locally edge-clamped glazing and cable end fittings.

3 WTC fully open to the public – 10,000 glass panels later

With the completion of the tower in 2018 came the opening ceremony in June of this year.  Full access to the lobby and transit hall have just been permitted after scheduling conflicts have all been resolved. You can now come in from the Fulton St station by train and walk through the Oculus and up into the transit hall of 3 WTC, all in one continuously conditioned space.

We are proud to have worked with Tishman and Mariani Metal on this full-service project (calculations-shop-fabrication) and have designed and engineered the transit hall/lobby curtain walls with blast-resistant building design throughout. Although LED worked together with Mariani Metal to complete almost all metal-related fixtures and assemblies in the transit hall, (w/ calculations and shop/fabrication drawings for these items) the brunt of the work relied on bomb-resistant glass wall design for the massive curtain walls and top hung 3-level glass floor system with intermediary bridges. The use of Duplex Stainless Steel was a key design element when engineering the curtain walls, mullions, transoms, brackets, and even nosing connections. Careful collaboration between Mariani and LED also allowed for a smoother and faster fabrication process which allowed for more installation time on-site.