OthersHigh Rise Building (Lotte World Tower) Construction above Existing Subway Line 8
Category R & D
Client KTA (Korean Tunnelling and Underground Space Association)
Contractor Lotte E & C
Period November 12, 2012 ~ October 31, 2013
Project Information
  • Location
    300, Olympic-ro, Songpa-gu, Seoul, Korea


  • Description
    • World Tower Building area = 87,182m2 (12.2 times the soccer field while the total floor space is 110 times the soccer field)       
    • Lotte World Tower with 123 floors and 555m height is the world's 5th tallest building
    • Length of the influence by existing subway = 250m (open cut + transfer girder)


  • Technical Issues
    • Establishment of the construction plan without disruptions of existing structures in poor ground condition
    • Installation of the transfer girder (transfer building load to the ground) for the safety of subway structures and design of the linkage with the existing subway station