The new zealand concrete masonry manual which was created in the late 1970s as a guide to the design and construction of concrete masonry has been updated and is available in sections for free download as required.
Concrete block retaining wall design nz.
Good piped drainage that disposes of water away from behind the wall to limit this build up of figure 1.
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.
All firth retaining is made in nz.
1 3 modular wall masonry.
Firth keystone retaining wall system lightweight easy to handle and requires no special tools.
It is a modular concrete block designed to form an integrated segmental retaining wall.
Retaining walls can hold up the roads you drive on every day.
Retaining walls only better.
Starting from 299 per metre.
1 2 concrete masonry wall units.
Cost for a concrete retaining wall.
1 1 what is concrete masonry.
Manufacturers of some proprietary retaining wall systems particularly crib walls have pre engineered design tables that may be used without the need to engage an engineer.
Redi rock gravity walls rely on massive concrete blocks to hold up the earth.
Retaining or protecting embankments.
Numerous textbooks and technical papers on soil mechanics foundation engineering concrete design masonry design and in all sorts of related topics.
Surcharge and zone of influence.
Despite the many references a single volume on retaining wall design for the professional practitioner and civil engineering student could not be found.
Design build manufacturer of interlocking large concrete blocks for gravity retaining walls security walls railroad flood control and containment bins.
Nzs 4229 1999 concrete masonry buildings not requiring specific engineering design.
1 5 m maximum surcharge 45 zone of influence figure 2.
Perfect for heavy duty garden retaining walls.
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.
Nzs 4230 2004 design of reinforced concrete masonry structures.
Firth retaining walls blocks are perfect for creating a landscaping feature.
A build up of water behind the wall is the principal cause of retaining wall failure.
The gravity wall system is an engineered retaining wall solution that relies on the weight of massive one ton blocks to retain the earth.
1 4 mortar and.