All firth retaining is made in nz.
Block retaining wall design nz.
Firth keystone retaining wall system lightweight easy to handle and requires no special tools.
Retaining walls that are over 1 5 m high and those supporting a surcharge require a building consent see figure 1.
It is a general guide only and if used does not relieve any person of the obligation to consider any matter to which the information relates according to the circumstances of the particular case.
Stonebloc are easy to stack ensuring an incredibly fast build time and with 400mm thick solid concrete they form a super durable wall.
Allan block has all the products colors ideas and resources you need to design and build retaining walls for homeowners contractors designers and engineers.
Depending on the concrete blocks used a retaining wall made from concrete blocks could start from around 299 390.
Firth retaining walls blocks are perfect for creating a landscaping feature.
Creates walls up to 1m high can go higher with specific design 3 units per lm or 11 units per m2 retaining capping units corner blocks and fibreglass pin connectors are also available 34kg block.
Any anchorbloc retaining wall exceeding 1 5 metres tall will require an independent design completed by a chartered professional engineer and will require a building consent from the local council.
Regardless of whether a building consent is required retaining walls must comply with the requirements of the new zealand building code clause b1 structure.
Our commercial and residential segmental walls are durable and easy to install making them a great choice for any project.
This information is published by the ministry of business innovation and employment s chief executive.
B1 2 which states buildings building elements and siteworks.
Retaining wall system field installation guidelines 7 design guide and software the table below is a guide outlining the documentation required when constructing an anchorbloc wall.
The blocks are easily dry stacked and their patented design locks into the block above to form an attractive structural retaining wall.
Anchor wall offers the latest innovations in concrete block retaining and freestanding wall systems.
Timeless retaining walls stonebloc is a precast concrete retaining wall system of interlocking concrete blocks designed specifically for walls up to 2m high.
The tasman retaining wall system incorporates purpose made corner and capping units to provide classical reconstructed sandstone retaining walls.