Reno Mattress Plus

M/s. Abu Dhabi General Services Company PJSC (Musanada), on behalf of the M/s. Abu Dhabi Housing Authority (ADHA) appointed M/s. CORE Engineering Consultancy LLC to do detailed design of External Storm and Irrigation Connection to Jebel Hafeet and Ain Al Faydah Developments. Accordingly, the designer proposed concept design options of stormwater discharge ponds strategy to the relevant project stakeholders, which mainly involved the construction of two massive ponds within Ain Al Fayda & Jabel Hafeet locations, near to the ongoing Emerati Housing Development project. The size of the pond is significant due to the large volume of storm water expected from a 1 in 25 years storm as well as from ground water recharge. The proposed pond design consisted two zones, namely the ‘deep zone’ for ground water recharge and storm water flow collection while the ‘shallow zone’ is meant for accommodating the stormwater overflow from the former area. The pond lining solution has a pivotal role of allowing ground water recharge into the pool without allowing pore water pressure development within the backfill side. For this reason, the designer’s lining solution was a 30cm thick loose stone rip rap along the banks of the pond. However, due to problems with loose rip rap lining in previous projects, the end-client advised to change the pond lining with gabion mattress.

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In the heart of Arles, a remarkable project unfolded to accommodate large cruise ships. The existing Lamartine quay, steeped in history, couldn’t meet this demand, leading CNR, the project owner, to envision a new dock on the left bank of Arles. This ambitious undertaking involved using specialized double-twisted wire mesh pre-filled mattresses, RenoMac Plus. These mattresses were chosen for their precision and reduced environmental impact compared to traditional rip-rap. The decision to employ RenoMac Plus was driven by its ability to provide targeted protection to vulnerable areas of the riverbank, negating the need for a full coverage. Its thin 30-centimeter profile not only reduced the volume of materials required, but also minimized the ecological footprint of the project. The company Maia Fondations entrusted Maccaferri with the supply and prefabrication of these mattresses, which were custom-designed for this unique application. Additionally, the lower layer of the mattresses featured a 14-meter geotextile-reinforced layer, adding to their effectiveness. Notably, the inclusion of a geotextile layer together with the base panel of double-twisted wire mesh creates a 2-in-1 solution that allows both protection and filtering.

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Given the events following the El Niño phenomenon in 1998, the Nazca Valley has been affected by river overflow and ravines. The high vulnerability to overflowing on the right bank of the natural drain in the Cajuca area of the Nazca district poses a latent danger to the entire population of the populated centers Cajuca I, II, and Buena Fe.

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