10/2013 – Retaining walls in an extreme climate

Terraforce in Namibia. It has been exactly 20 years ago that Namwall took over the Terraforce license in the extreme climate of Namibia. For some 5 years before July 1993, two other companies had taken on the Terraforce license, and failed. Bryan Newby and his wife Linda had to overcome the reservations that had built up in the market and prevailed against many odds.

The Terraforce system appealed to the owner because of its superior visual finish and economic feasibility.

House Wessels

The Terraforce blocks were developed 30 years ago by former Namibian resident, Holger Rust and are now being produced by various block-makers on five continents, in many countries around the world.   

In Namibia, Namwall went from strength to strength and are currently well established with interesting projects on hand, and a new Birkenmayer block plant has been installed for increased production capacity and even better quality.

Bryan and Linda’s son-in-law Chris and daughter Leanne are the current owners of the company.  Bryan now consults on Terraforce contracts and has been involved with several large Terraforce projects in the Persian Gulf region, due to his vast experience with earth retaining and the logistics of installing large projects.

Featured below are a few recently completed projects in Windhoek, that bear testimony to the quality of workmanship, being delivered by Namwall.

House Wessels, Windhoek

An excavated his backyard need stabilisation

Backyard retaining wall, house Wessels

The owner of the property had excavated his backyard to increase the yard size and needed the cut slope retained, as well as access to the top of the embankment.

The Terraforce system appealed to him because of its superior visual finish and economic feasibility.

To add extra reinforcement, a double skin of blocks with soil-crete infill was installed where the wall reached higher than 2m. A spiraling staircase was added to the design, which ended up being easy to install using the same block used for the walls.

House Burger, Windhoek

The owner of the property was stuck with exposed embankments in his backyard. To cover up the eyesore, he requested Namwall to create a retaining wall that would define the different levels, curves and stairs in the yard. The project still needs to be landscaped by the owner.

House Burger, backyard retaining walls

House Burger, backyard retaining walls

The project still needs to be landscaped by the owner.

The project still needs to be landscaped


German Embassy, Windhoek

The German Embassy was struggling with large exposed rocky areas on a steep slope that was deteriorating and becoming hazardous to the public and staff. To stabilize the slope, Fred Laker of Terrasafe, designed a wall with a double skin of blocks and Y16 reinforcing rods from the foundations up as well as 25mpa concrete infill in all the blocks up to 3 m high.

Double skin of blocks and Y16 reinforcing rods

Double skin blocks/Y16 reinforcing rods

German Embassy, erosion control

German Embassy, heavy retaining


University of Namibia, Windhoek

The University needed to stabilize exposed embankments, and Namwall was called in by Murray and Roberts to supply and install a Terraforce retaining wall. The wall consists of a basic foundation and gravity wall not exceeding 2m.

University of Namibia, erosion control

University of Namibia, earth retaining

Plant growth on and around the wall

Plant growth on and around the wall

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4 Responses to 10/2013 – Retaining walls in an extreme climate

  1. Harm Oltmann says:

    Great efforts, I like to learn more about Terraforce, as we are involved in sustainable construction and ecological recovery projects in China.

    Kind regards
    Harm Oltmann
    Chairman
    GiK-Gesellschaft f. internationale Komuniukation e.V., Berlin – Beijing – Qingdao
    Stiftung z. Erhalt v. Gebäuden deutscher Bauart i. China, Berlin – Qingdao

    • Karin says:

      Thank you for your interest, we would be very happy to provide you with more information.

      The owner of the business, Mr Holger Rust, will be contacting shortly, in the meanwhile you can go to our download page where you can download some of our design manuals and submission sheets, amongst other information:

      http://www.terraforce.com/downloads/

      If you need any other information please let me know and I can email it to you.

      Regards

      Karin

  2. Sophia Liam says:

    These are so beautiful. Do you have professional landscapers working on your team? I’d love to hear about where they studied.

    Thanks,
    Sophia Liam | http://www.distinctive-landscape.com/retainingwalls/retaining-walls.htm

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