prolam crib wall. prolam crib wall is a unique retaining crib wall system offering engineers, architects and customers a number of distinct advantages: durability - internationally certified design life of 125 years, and standard industry 50 year warranty against decay and termites. economy - significantly cheaper than other retaining wall types.
gravity walls are the earliest known retaining structures. they are built from solid concrete or rock rubble mortared together. the lateral forces from backfill is resisted by the weight of wall itself, and due to their massive nature, they develop little or no tension. therefore, they are usually not reinforced with steel.
an owner wishes to form a level platform for a garden below a neighbours driveway. to do this, she intends to construct a 1.2 metre high retaining wall. as the proposed retaining wall is subject to a surcharge from the neighbours vehicle driveway, it will require a building consent. a retaining wall ranges in height from 900 mm to 1.8 metres.
allan block has all the products, colors, ideas and resources you need to design and build retaining walls for homeowners, contractors, designers and engineers.
specializing in large and small projects for domestic and commercial applications. simple and stylized decks; pergolas; engineered retaining walls; retained driveways
at 300kg each, stonebloc is a gravity wall system which can be easily reinforced post installation to create a cantilever wall. the sandstone finish on the blocks ensures a timeless aesthetic which complements and enhances the surrounding environment. choose stonebloc, new zealands greenest retaining wall system.
another type of gravity wall is the crib retaining wall, which comprises a system of interlocking header and stretcher blocks to retain the granular fill that provides the mass to the wall. both proprietary block and crib retaining walls must be built on an in situ concrete foundation or on a compacted base course.
flex mse vegetated retaining wall system. the flex mse vegetated wall system is a simple, innovative solution for erosion control, slope stability, soil retention and earth wall applications. the flex mse vegetated wall system is the ideal solution for walls and slopes where a natural 'green' solution is desired.
permacrib retaining walls. permacrib is a structurally engineered walling system, utilizing the long established gravity wall concept. the patented lightweight interlocking crib components form a series of open cell modules. these are then filled with well graded stone to create the mass required to counteract the earth pressures
new garden beds can easily be created by building a retaining wall or indeed multiple retaining walls down the face of a sloping section. retaining walls can be built in many different ways, but the most common forms of retaining wall are gravity, piling or post, cantilevered or anchored.
real-crete structural concrete sleepers are used in retaining walls of greater height than 800mm. real-crete structural concrete sleepers are steel reinforced and are manufactured to engineered standards. real-crete sleepers can also be individually engineered for use in almost any retaining wall height. two types of structural sleepers;
but it is vital to realise that any retaining wall holding up the weight of anything such as a dwelling or vehicle access will need to be consented by your local council. only small, simple walls should be considered a diy project.
a retaining wall can help create a usable flat area for additional living space, garden areas, or lawns; and hold up foundations to driveways, pathways or houses.
retaining wall free design service for diyers and the trade gabion retaining wall design guidelines email info gabion1.co.nz with the retaining wall length, height and thickness, with your location for a delivered price.
earthquake resistant retaining wall design. last updated on: august 16, 2017 new zealand is a high earthquake hazard region and earthquake considerations are integral to the design of the built environment in new zealand. the effects of earthquake shaking need to always be considered in geotechnical engineering practice including the design
the allan block success began three decades ago with the introduction of their patented segmental retaining wall product the original allan block. the success story continues with the development of creative and innovative construction products, aiming to revolutionise the way the world builds.
building a retaining wall can help you create a usable space in your garden. it can help you level up an area in your yard or protect against erosion. building one isn't hard and if done right, it
for a low retaining wall, the posts must go 100 mm into the ground for every 100 mm retained above ground. walls higher than 1.5 m will require a building consent. for retaining walls 1 m or higher, the new zealand building code may require a safety barrier at the top. in domestic
types of retaining walls-gravity walls - pre-cast crib walls - gabion walls - reinforced concrete walls - sheet pile walls - ms walls mechanically stabilized - slurry and secant walls - soil nailing l. prieto-portar 2008. retaining walls are structure used to retain soil, rock or other materials in a vertical condition.
from boundary walls and fences, bio-security, pest proofing, gates, mr fencer has been synonymous with quality since 1996, and is one of new zealands seven trust fencing suppliers, for medium to large commercial and corporate fencing projects, contractors, schools or local authorities..
handy hint. for retaining walls 1m or higher, the new zealand building code may require a safety barrier at the top. in domestic situations this is likely to be required where the wall is beside an access path to the house. alternatively, you can also build a fence.
retaining walls. brush-layered wall can be used on both slopes and in waterways to secure slips. they can also be successfully used where the base of the slip cannot be founded on hard material as the root mass creates the structural support required to bind the site together.
the rocklok segmental concrete block retaining wall system has been proudly developed in new zealand in conjunction with engineers to meet the demands found in this highly active seismic region. rocklok is a fully engineered system, ideal for bridge abutments, wing walls and large retaining walls. the positive connection system provides extra performance and safety when critical loads are present while still providing an aesthetically attractive finish.
retaining walls even low retaining walls can be exposed to large forces from water, the earth behind them and nearby cars or buildings. they need to be well designed and built to prevent failure. by alide elkink, freelance technical writer, wellington build right a retaining wall is built to hold back a bank of earth where there is a change of grade.
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 structural engineer :
module 6: earthquake-resistant retaining wall design page 4. introduction. 6. 1 introduction. new zealand is a high earthquake hazard . region and earthquake considerations are integral to the design of the built environment in new zealand. the effects of earthquake shaking need to always be considered in geotechnical engineering practice including
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