Stability and seismic vulnerability of the Stylite Tower at Umm Ar-Rasas

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Paolo Clemente
Giuseppe Delmonaco
Lucamaria Puzzilli
Fernando Saitta


The stability and vulnerability analyses carried out on the Stylite tower at Umm ar−Rasas, Jordan, are presented in this paper. The tower is a unique example of this kind of structure still existing. The soil and the structural material were analyzed by means of in situ ex− perimental tests. These consisted of Schmidt−hammer tests on stone blocks and passive seismic measurements. The stability of the tower was first analyzed, assuming an elastic – perfect plastic behavior in compression for masonry. Then the push−over seismic analysis was carried out, which was based on a single−mode approach and a finite solid element modelling with a Drucker−Prager yield criterion for masonry. The work is propaedeutic to the design of a retrofit intervention.

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How to Cite
Clemente P, Delmonaco G, Puzzilli L, Saitta F. Stability and seismic vulnerability of the Stylite Tower at Umm Ar-Rasas. Ann. Geophys. [Internet]. 2019Dec.3 [cited 2021Jun.23];62(3):SE340. Available from:
Lessons from the past: the evolution of seismic protection techniques in the history of building
Author Biography

Paolo Clemente, ENEA Casaccia Research Centre, Rome,

Structural engineering, earthquake engineering, vulnerability, cultural heritage structures, bridges, seismic input