100 Villas in Ras Al Khaimah
100 Villas in Ras Al Khaimah

2014 - Ras al Khaimah,

The project consists of construction of 100 villas for UAE nationals in Ras Al Khaimah, over a total of about 100,000 m². Dynamic Compaction technique was proposed as alternative to Vibro Replacement technique, in order to improve the existing soil conditions and achieve the project requirements.
All dynamic compaction works for more than 100,000 m² were completed in 5 weeks, including execution of works QA/QC post-testing and final handing-over reports.
Owner Ministry of Public Works
Contractor Al Hamra Construction Co. Llc.
Area 100,000m²

The Project was awarded by the USACE as Early Contractor Involvement (ECI) to expedite the contractor selection and project construction schedule. As part of the ECI contract, TREVIICOS was actively involved in the finalization of the design and constructability. Over 5 miles of levee were stabilized employing a total of 8 drill rigs, single and double auger, carrying 5.25 ft diameter mixing tools. DMM elements were distributed in buttresses perpendicular to the levee axis and spaced 15.5 ft on-center. The elements were installed from a working platform, built with material resulting from the mixing operations, through mostly clayey and organic (peat) soils, and were keyed into the more competent Pleistocene layer. The DMM was installed and maximum depth reached was 70 ft.

The soils were mixed in situ with predetermined quantities of binder, a blend of Slag and Portland cement. The grout was injected at the bottom of the drilling rods at different rates of pressure and flows to address the peculiar properties of each soil layer.

Appropriate installation parameters were preliminarily identified through several laboratory and field tests and were constantly monitored in real-time during production through SOILMEC’s Drilling Mate System. The DMS allowed also the computer controlled installation of the DMM elements and the immediate QC of the constructed element through a data email sent upon completion. Three percent of the elements were cored for verification of the acceptance criteria; over 500 top to bottom continuous coring were drilled and over 5,000 specimens were tested for Unconfined Compressive Strength assessment. Production was successfully completed ahead of schedule and with no remedial work. LPV 111 is the biggest DMM project ever complete in North America and possibly the world.

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