Location
New York, New York
Date
15 Apr 2004, 1:00pm - 2:45pm
Abstract
This article reports on a 5-storey historic building which was completely cored to build a new one inside its historic façades. A bending resistant steel framework was installed inside the construction ground and tied positively with the façades to stiffen them during construction works. Vertical loads were taken by a jet grouting gravity retaining wall, which also acted as supporting system for the building pit. To carry lateral loads the framework was tied back into the ground by vertical and inclined pre-stressed anchors. Several months after installing the gravity walls, just after the end of the demolition works and after fully straining of the supporting system, cracks in the historic façade were detected as well as an inclination of the façade with a tangential deviation of 1:160. The tilting of the façade was induced by different vertical movements of the framework caused by an expansion process within the jet grouting material. Because of the ongoing expansion by means of delayed ettringite formation, it was necessary to dismantle the jet grouting structures.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
5th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 2004 University of Missouri--Rolla, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Katzenbach, Rolf; Weidle, Alexandra; and Hoffmann, Helmut, "Tilting of a Historic Façade During Construction Works – Geotechnical Cause and Effect on the Stiffening System" (2004). International Conference on Case Histories in Geotechnical Engineering. 4.
https://scholarsmine.mst.edu/icchge/5icchge/session07/4
Tilting of a Historic Façade During Construction Works – Geotechnical Cause and Effect on the Stiffening System
New York, New York
This article reports on a 5-storey historic building which was completely cored to build a new one inside its historic façades. A bending resistant steel framework was installed inside the construction ground and tied positively with the façades to stiffen them during construction works. Vertical loads were taken by a jet grouting gravity retaining wall, which also acted as supporting system for the building pit. To carry lateral loads the framework was tied back into the ground by vertical and inclined pre-stressed anchors. Several months after installing the gravity walls, just after the end of the demolition works and after fully straining of the supporting system, cracks in the historic façade were detected as well as an inclination of the façade with a tangential deviation of 1:160. The tilting of the façade was induced by different vertical movements of the framework caused by an expansion process within the jet grouting material. Because of the ongoing expansion by means of delayed ettringite formation, it was necessary to dismantle the jet grouting structures.
