Concrete Block Retaining Walls
We excavate down to firm bearing and pour a reinforced concrete footing with starter bars standing up out of it. The blocks thread down over those bars course by course, we tie in horizontal steel as the.
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Built strong. Built to last.
Concrete and Block Retaining Walls in Christchurch
Top Retaining Walls Christchurch builds concrete retaining walls across Christchurch. That covers Keystone and Firth segmental block, steel post and concrete sleeper systems, and poured reinforced concrete walls for the jobs that carry real load. Concrete costs more than timber up front and then stops costing you anything.
- Block walls to 1m without engineering, higher with geogrid
- Steel post and concrete sleeper walls for tight boundary jobs
- Poured reinforced walls where a driveway sits above
- Drainage on every wall300mm of metal, a drain coil and geotextile. Never an optional extra.
- H5 poles as standardThe right treatment for timber that lives in wet ground.
- Consents handledChristchurch City, Selwyn and Waimakariri, start to finish.
- Itemised quotesYou see what the drainage and the spoil actually cost.
Concrete and Block Retaining Walls
Concrete and Block Retaining Walls we build in Christchurch
Concrete becomes the obvious answer when something heavy sits above the wall. A driveway, a garage slab, a pool or a neighbour's fill all put extra load on the back of the wall, and that load is exactly what timber struggles with over time.
The other reason people choose concrete in Christchurch is what happened in 2011. The MBIE review of wall performance after the Canterbury earthquakes found that engineered concrete block walls generally did well, and the propped or buttressed ones did better than pure cantilevers. That record matters on a Port Hills section.
Keystone Retaining Walls
Each Compac III block drops onto pins set in the course below, and those pins hold the setback automatically. The wall leans back about 8 degrees as it rises, which puts the mass of the blocks working.
Read moreConcrete Sleeper Retaining Walls
The posts are hot dip galvanised steel with a channel on each side. We set them in concrete footings, then slide reinforced concrete panels down the channels one at a time. The soil pushes the panel into.
Read morePoured Concrete Retaining Walls
Poured concrete goes in when a building sits above the wall, when a driveway runs right along the top, or when the wall is tall enough that an engineer wants a single monolithic structure rather than.
Read moreConcrete Crib Retaining Walls
The first stretcher course goes on a concrete foundation or a well compacted base, set to establish the batter. From there the headers and stretchers alternate up the wall, forming open cells, and we.
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The part you never see
How we build a retaining wall that drains
Nearly every failed wall we get called to in Christchurch failed the same way. Water sat behind it, the soil got heavy, and the wall leaned out a little more each winter. So we build the drainage first and the face second.
- At least 300mm of clean free draining metal sits behind the wall face
- A perforated drain coil runs the full length at the base
- Geotextile cloth wraps the top and back so silt cannot block it
- The coil discharges to daylight or to stormwater, never a dead end
Where we work
Concrete and Block Retaining Walls across Christchurch and Canterbury
We cover the whole city plus the Selwyn and Waimakariri towns within a sensible drive.
Not sure which wall type suits your section?
We will come out, measure it and tell you straight. The site visit and the written quote are both free.