Flexible double-cage hoist for high operational efficiency in tall building construction

Taehoon Kim, Ung Kyun Lee, Seung Woo Kim, Hyunsu Lim, Chang Won Kim, Hun Hee Cho, Kyung In Kang

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


High operational efficiency in the use of hoists is crucial for the successful completion of high-rise building projects. Simply increasing the number of hoists may not be possible because of insufficient space or budget limits. However, adopting the “double-deck” concept can be an effective approach to improving the operational efficiency of hoists in projects with such constraints. This study proposes a flexible double-cage hoist for use in such projects. In a case study, we found that combining the proposed hoist with existing single-cage hoists enabled a smaller number of hoists to achieve significantly higher efficiency at lower cost than a group of single-cage hoists. The optimal combination showed a 16.6% decrease in total operational costs and a 7.9% increase in operational efficiency. Using the proposed hoist could therefore enable the successful completion of high-rise building projects at lower cost.

Original languageEnglish
Pages (from-to)280-291
Number of pages12
JournalAutomation in Construction
Publication statusPublished - 2018 Dec 1


  • Flexible double-cage hoist
  • Hoist
  • Operational efficiency
  • Tall building

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Civil and Structural Engineering
  • Building and Construction

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