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Proceedings of the 18
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International Conference on Soil Mechanics and Geotechnical Engineering, Paris 2013
Proceedings of the 18
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International Conference on Soil Mechanics and Geotechnical Engineering, Paris 2013
Figure 13. Building pit at PP44 during incident
Figure 14. Displacement of building Paulus Potterstraat 44
5.4
Costs
The (interest)cost of a delayed opening of the hotel have been
estimated at least at €50.000,- a week. The additional costs of
the additional monitoring and damage risk assessment have
however, as compared to a basic monitoring program, not
exceeded €100.000. When no information would have been
available after one of the calamities, construction could have
been stopped for months.
6 COMPLETED WORKS
The works have been completed in 2011, not only resulting in
one of the most luxurious hotels in Amsterdam, but also in a
construction of both geotechnical as well as aesthetic beauty. It
won the 2012 Dutch Renovation ´Golden Phoenix’ award for
the most effective reuse of existing property stocks. An
impression of the completed work is given in Figure 14 to 16.
Figure 19 shows the impressive swimming pool at -3 level, right
next to the over 110 years old existing pile foundations.
7 CONCLUSIONS
The renovation of the former Rijkspostspaarbank Amsterdam to
luxury five star Conservatoriumhotel has been very successful
from a geotechnical perspective. Through a sophisticated
geotechnical design and a detailed risk analysis of the
distortions of the building before construction, combined with a
meticulous and proactive monitoring and excellent
communication during execution, two major incidents have not
led to significant additional costs and/or delays. The
investments that have been necessary to achieve this have been
minor compared to the potential cost of the delay that would
have resulted from the lack of information without such a
system.
8 ACKNOWLEDGEMENTS
The author gratefully acknowledges the willingness of the client
to invest in a sound geotechnical design and a pro-active
approach to monitoring the geotechnical execution of the works.
Figure 15. Finished construction – atrium new-old
Figure 16. Finished inside construction
Figure 17. Finished outside construction
Figure 18. Finished swimming pool at -3 level
9 ACKNOWLEDGEMENTS
The authors wish to express their gratitude to the client Alrov
Group and IQNN Vastgoed, structural engineer Van
RossumRaadgevendIngenieurs, contractor Strukton NV and
foundation subcontractor Van ‘t Hek for their contributions to
this paper.
10 REFERENCES
Netzel, H.D., Building Response Due to Ground Movements, Delft
University Press, March 2009, Pages 320, ISBN978-1-58603-995-0
Van der Stoel, A.E.C. D. Vink & J. Bouma, Van
RijkspostspaarbanknaarvijfsterrenConservatoriumhotel; deel 1
geotechnischontwerpConservatoriumhotel
Amsterdam,
Geotechniek, jaargang 16, no. 4, augustus 2012 (in Dutch)
Van der Stoel, A.E.C. D. Vink & J. Bouma, Van
RijkspostspaarbanknaarvijfsterrenConservatoriumhotel; deel 2
Monitoring en uitvoeringConservatoriumhotel Amsterdam,
jaargang 16, no. 5, december 2012 (in Dutch)
