Haneda Airport Terminal 2 International Terminal Expansion Project - Large-Scale ETFE Membrane Roof

A large membrane structure planned and realized with the theme of "disaster-resistant, safe, and secure airports"! A case study adopted at Haneda Airport Terminal 2 is currently available.

A cushion-type membrane structure that combines ETFE and a non-combustible membrane material of 500 microns. By continuously installing 318 cushion units measuring 3m x 9m, we constructed a membrane roof space of 6,500 square meters. In this project, there were two major themes to address: roof fire resistance and roof insulation. The issue of roof fire resistance was resolved by sandwiching a non-combustible membrane between the ETFE cushions. The roof insulation issue was addressed by creating an air layer in the cushion type and applying special printing to the ETFE. In particular, the combination of ETFE cushions and non-combustible membranes requires very high technical skills in all processes of design, manufacturing, and construction. Our company verified and established its performance through membrane analysis programs, experiments on various details, and full-scale mock-ups. We also developed the air supply system and maintenance plan. *Details of this project are published in the June 25, 2020 issue of Nikkei Architecture. Please take a look. For more information, please feel free to contact us.

Others/Roofing materials (shingles, cement, steel sheets, aluminum)