A proposal has been announced for the world’s first seven-storey observation tower constructed using Structural Engineered Bamboo (SEB) in combination with stainless steel. The project, titled The Bowing Tower, is designed by Luke D. Schuette, founder and CEO of the US-based material technology firm ReNüTeq, and is planned for construction in St. Louis, Missouri.

The structure is designed to reach a height of 34 metres and incorporates multiple public and professional functions, including observation decks, an architectural materials library, an electric vehicle lounge, a café, and space for events. The form of the tower draws inspiration from the angled perspective of the nearby Gateway Arch, designed by Eero Saarinen, and aims to reference its catenary geometry using a combination of engineered bamboo and steel.

Application of Structural Engineered Bamboo
The project uses Structural Engineered Bamboo (SEB), a laminated and processed form of Guadua bamboo designed for load-bearing applications. According to ReNüTeq, this material offers a strength performance over three times higher than Moso bamboo or mass timber products such as glulam and CLT. Guadua, a bamboo species native to Colombia, is also one of the fastest growing plant-based building resources.

SEB is manufactured at ReNüTeq’s facility in St. Charles, Missouri. The product has been integrated into US structural standards through ASTM 5456 and ICC-ES AC47, and was included in the International Building Code in 2012. It is developed for architectural and structural use in mid- to large-scale buildings, offering a renewable alternative to conventional construction materials.

Design Collaboration and Structure
ReNüTeq collaborated with Sebastian Bildau of Atelier Bildau (Germany) to refine aspects of the structural design. Atelier Bildau specialises in timber-based architecture and contributed to the vertical circulation and structural articulation of the tower. The combination of stainless steel and SEB in the tower’s curved geometry is intended to demonstrate the potential of bio-based structural systems in architectural applications.

Material Considerations for Architecture and Design
The project provides a practical demonstration of SEB as a structural material suitable for high-rise construction. As the construction sector increases its focus on low-carbon and circular building practices, SEB represents a possible alternative to steel and concrete in selected structural contexts.

The Bowing Tower is currently in its design phase. Further development may offer additional insights into engineered bamboo’s role within performance-based architecture and sustainable urban infrastructure.

Source: ReNüTeq
Images: Schuette / ReNüTeq