H Architecture presents a competition runner-up proposal for the new Korea Post tower located in the Yoido Business District (YBD),Seoul’s
main center for finance and investment banking. Designed in collaboration with Haeahn Architecture in Seoul, the 360-meter-tall office tower
competes among the tallest, most premium and most sustainable buildings in the district.
The proposal was designed as a landmark that aligns with two key characteristics of its site: Yoido’s vibrant urban spaces and sustainable urban environments. The building was set back as far from the street as possible allowing maximum space to be designated as a public plaza. This public plaza is symbolically expanded beyond the ground level by housing open-to-public programs including high-end retail, shared offices, mini-MICE venues, and an elevated terrace garden deployed throughout the first four floors. The design scheme is an evolution of the local office tower typology, which typically contains all public and retail functions in the basement levels. The public programs throughout the first four floors are showcased to the exterior plaza through a 20-meter-tall transparent grand lobby resulting in an ultra-public pedestrian-friendly complex with unprecedented civic and asset values.
The 28-story landmark tower was designed to exceed prime office space specifications, including higher IBS standards, wide column-free work spaces, generous ceiling heights, competitive usable floor area ratios and many sustainability features that guarantee a low life cycle cost. The 68,554-square-meter project has been designed to LEED® Core & Shell Gold standards and also complies with the highest levels of the Architectural Energy Efficiency Rating, Energy Performance Index and Green Building Certification. Especially, the building façade features a high-performance GFRC louver-integrated-curtain-wall-system that is optimized to simultaneously provide maximum shading performance in directions with high solar exposure and striking views in the direction of the Han River. Furthermore, BIPV panels installed on the roof and southern facades of the tower efficiently provides enough reusable energy to cover 22% of the building’s energy consumption.