Geotechnical study in Petra

In the municipality of Petra, the predominant foundation materials are limestones, dolomites and marbles, which provide a competent base with high bearing capacity for foundation projects. Secondary layers of fine sands, silts and, in smaller proportions, gypsum, anhydrite and salts may influence conditions locally, especially where the latter outcrop, since there is some risk of dissolution. The aquifers present are extensive, although their yield and permeability are moderate, which should be taken into account when designing deep excavations and drainage systems.

Seismic activity in Petra is moderate, with 24 events over 30 years and a maximum magnitude of 3.2, indicating a low seismic risk for structural design. Given the karstic nature of the carbonate materials, it is advisable to carry out a detailed verification of the development of cavities before defining any foundation, as the presence of karst is the main geotechnical conditioning factor in the area. The subsoil is not clayey, which rules out the problem of expansive soils.