How To Build A Concrete Retaining Wall Nz
But even walls which do not require a building consent must comply with the requirements of the new zealand building.
How to build a concrete retaining wall nz. To obtain a building consent. The interlocking retaining wall block can be used to build walls up to 24 to 36 inches high depending on the size of the block. For retaining walls 1 m or higher the new zealand building code may require a safety barrier at the top. For a low retaining wall the posts must go 100 mm into the ground for every 100 mm retained above ground.
Should also be provided in the base of the wall. Cost for a concrete retaining wall. Designing retaining walls when a building consent is required the wall must be specifically designed by a registered engineer. Concrete masonry retaining walls can be designed in accordance with the following new zealand standards but it is prudent to have the design checked and inspected by a.
Starting from 299 per metre. Follow the block manufacturer s instructions for wall height limits. So if your wall is higher than 1 5 metres or it supports a driveway parking area or the weight of a bank or building above the wall you should consult an engineer and obtain a building consent. When a building consent is required the wall must be specifically designed by a registered engineer.
Walls higher than 1 5 m will require a building consent. Avoid having downspouts pointed at the retaining wall and if it s against the house keep soil and mulch well below the siding. If you looking for any tools to complete all of your timber projects and what to know the best timber for decking timber fencing. Our free retaining wall cost estimator can get you an instant ballpark idea of how much it costs to have a retaining wall built in new zealand.
For any other diy advice woodmart your one stop wood choice. Another concrete option is traditional grey 300 by 150 millimetre blocks but it s not a diy type job as it involves steel and filling.