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Installation of an ICAT-2 Rockfall Barrier along National Highway in Southern Leyte

Rockfall Barrier

The ICAT-2 Rockfall Barrier is cost efficient and easy to install

Maccaferri provided an ICAT-2 Rockfall Barrier for a transportation infrastructure protection project in Southern Leyte. Maccaferri Engineers provided their technical knowhow as support, while the work was being installed by Gicar Construction.

In late 2015, a Regional Office of the Department of Public Works and Highways was contacted to discuss possible rockfall solutions for a section of a highway situated in San Jose on Dinagat Island in Southern Leyte. Plagued with rocks detaching from a slope on the Main National Highway, DPWH’s brief was to design a rockfall protection system that would protect both pedestrians and vehicles passing along that stretch of roadway.

Site constraints prevented secured drapery netting, High Energy Absorption panels (HEA) or Steelgrid solutions from being suitable. Further, space limitations at the side of the road made a high retaining wall system unfeasible. Finally, our design engineers proposed the installation of an ICAT2 -50 dynamic Rockfall Barrier placed on top of a retaining wall.

The slope is 10–15 meters high with inclination ranging between 45 – 60 degrees and total length is around 200 meters. The type of slope and the size of rocks, at risk of detaching from the face, made Maccaferri’s ICAT-2 barrier the ideal choice. Constructed from a complex system of steel cable panels connected to structural elements, posts, energy dissipation devices and anchors, the erected barrier is capable of withstanding a maximum energy impact of 500 kJ. The catch fence (or Rockfall barrier) is supplied from us in kit-form with all components for the above-ground installation present.

In mid-2016, DPWH awarded the construction of the barrier to Gicar Construction. Maccaferri’s Philippines factory started fabricating the barrier while Gicar commenced site preparation. Our engineers visited the site during the installation period to ensure that the constructed barrier was correctly installed. Gicar, the installing contractor, commented that the installation process was simple, cost effective and well supported.

The section of roadway is now secured, and the project has been given the seal of approval by DPWH.
DPWH are now eyeing other sections of the highway in Southern Leyte for which our barriers may prove to be an ideal solution.

For more general information, please contact us.

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