Project Information

  • Location: Muscat, Oman
  • Client: The Sultanate of Oman
  • Contractors: Al Manar International L.L.C.
  • Consultant: Constell Consultants Pvt. Ltd.

AL Mirani Fort

Al Mirani fort along with Al Jalali fort, flank Sultans Al Alam Palace. In the olden days, these more than 600-year-old forts served as bastions in defence of Muscat harbour and the old city. Al Mirani fort was restored to its original majesty as part of a concerted renovation programme.


The fort stands on the contours of a 30 - 40 m high rock mass which showed signs of decay and distress. The rock mass had undergone weathering and had formed several cracks, fissures and cavities at places. Surrounding saline weather conditions and rainwater discharge points had caused adverse weathering and erosion with time. The task was to identify weak rock conditions in the foundation that require rock stabilizing work.

Solution offered

Encardio-rite offered monitoring instrumentation before and after pressure grouting, rock bolting etc. Around 200 sensors were installed for the project. Even though the slope stabilizing work was being carried on all sides of the fort, the instrumentation was only on the east side towards the palace (zone 1) and south side facing the mosque (zone 2).

While implementing the instrumentation system, it had to be carefully ensured that it should have no detrimental impact on this precious historical structure. The monitoring system was planned to provide necessary base data to serve as a ground movement benchmark. The system was designed to provide an early indication of rock slope movements or potential damage.

Encardio-rite supplied & installed geotechnical instruments like IPIs, tiltmeters, borehole extensometers, piezometers along with automatic data acquisitions systems. It also set up an online web-based data management system (WDMS) for the period of the project.