Top-to-Bottom Construction in High-Rise Buildingsby Anthony van Zutphen, Jackblock International, The Netherlands,
Serial Information: Civil Engineering—ASCE, 1979, Vol. 49, Issue 3, Pg. 65-67
Document Type: Feature article
This top-to-bottom construction method, called jackblock is a cousin of lift-slab. The main components are the jack and concrete block, hence the name. The top story of a building is constructed at ground level on a large number of jacks. It is then jacked up an amount equal to its exact height and another is built underneath it. What is now a two story block is jacked up another level and the third floor and walls built underneath. These three floors are jacked up and so it goes until the building has reached its exact height. It is then anchored to the foundations. Detailed photographs and figures are included in the article. Jackblock was developed in The Netherlands where approximately 10 buildings have been built using the system since 1964.
Subject Headings: Construction management | High-rise buildings | Jacking | Floors | Concrete blocks | Walls | Slabs | Concrete construction | Foundations | Netherlands
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