Busan's 59-Story 'Lotte Castle De Mer' Wins Korean Concrete Institute Outstanding Work Award

Recognized for High-Rise Construction Technology

Lotte Engineering & Construction said on November 12 that it had received an award for its work on high-rise construction technology at the 35th Korean Concrete Institute Conference, recently held for academic presentations, for Lotte Castle De Mer in Busan.

Founded in 1989, the Korean Concrete Institute is a specialized academic organization that promotes academic research and technological development related to concrete. Each year, it selects and awards concrete structures with outstanding design and construction quality.

Lotte Castle De Mer at Busan North Port. Photo courtesy of Lotte Engineering & Construction.

Lotte Castle De Mer is a 59-story, 213-meter-high mixed-use complex, with five basement levels, built in the Busan North Port redevelopment area in Choryang-dong, Dong-gu, Busan. It was designed by Junglim Architecture and built by Lotte Engineering & Construction.

The skybridge connecting the two towers at the 51st floor, 170 meters above ground, was installed using a lift-up method: it was first assembled on the ground, then raised and joined using strand jacks, heavy-lifting equipment.

Connecting the structures at an altitude of 170 meters while managing construction tolerances between the two buildings was a highly challenging task. Technical support was provided from the early stages of construction by a technical management task force comprising the Housing and Building Construction Division, the Design Research Institute, and the Technology Research Institute. In October 2025, experts in high-rise construction from Korea, China, and Japan also visited the site to learn about the construction process.

The Korean Concrete Institute praised the award-winning project, saying, "This outstanding work brings to life a high-rise building and skybridge that harmonize with the waterfront landscape through distinctive architectural planning and highly advanced construction technology. It has contributed to creating a new skyline for Busan North Port and enhancing the landscape value of concrete buildings."

Lotte Engineering & Construction previously won the Korean Concrete Institute's Outstanding Work Award for three consecutive years: in 2019 for the Incheon Port New International Passenger Terminal, in 2020 for the Sejong Lake Castle G&R Clubhouse, and in 2021 for the Lotte Human Resources Development Institute Osan Campus.

"For high-rise buildings, concrete quality directly affects both the structure's lifespan and the quality of its exterior. That is why the Technology Research Institute, the Housing and Building Construction Division, and the site team have jointly managed every stage, from material selection and mix design to pumping and curing," said Seok Wongyun, head of Lotte Engineering & Construction's Technology Research Institute. "We will continue to focus our capabilities on developing high-rise and high-strength concrete technologies, as well as eco-friendly materials that reduce carbon emissions, and lead the way through rapidly changing conditions in the construction industry."

This content was produced with the assistance of AI translation services.