When you’ve put in the time and the effort into getting your backyard, your garden or elsewhere on your property up to scratch, and the vision you have in your mind is starting to take shape in front of you, nothing is more soul destroying than to see the ground on one of your slopes starting to slip away, eroded from beneath or weakened from above by extreme weather. What exactly can one do to avoid these calamities? You need the expertise of a company that is fully qualified and experienced to carry out Earthworks in Auckland and build you a retaining wall.
If you get in touch with Anyscape and ask that we come and build you a retaining wall before any major work on any kind of earthen slope, the aforementioned disastrous slippage and ground distortion can be completely avoided, and your garden or backyard or outdoor area can come to life, hassle free, just how you want it to.
Our team are both knowledgeable and well-practiced when it comes to retaining walls – if you can imagine it, they’ve already done it, so you know you’re getting the best retaining wall earthwork services available in Auckland.
Do you need earthworks for a retaining wall? The Anyscape team has extensive experience preparing both residential and commercial sites for retaining wall projects, as well as other excavations.
We start each job by carefully considering the scale and nature of your work. This includes taking into account and thus making plans regarding the proposed height and location of the wall. We will plan for the task accordingly and in advance. We have many years of experience behind us that inform our work decisions and processes, as well as a range of useful equipment that we will use to more efficiently excavate, drill for retaining walls, and generally carry out your job as reliable Earthworks Contractors in Auckland to ensure that we more than meet your requirements. Our services include drilling the holes and placement of poles within said holes. We’ll work efficiently, quickly, and conscientiously to get your site ready for the next stage of your project.
A retaining wall can be defined as rigid structures that are designed for the specific purpose of providing lateral support to a body of soil so that the soil level can be retained at two different levels on either side of the wall. As practitioners of Earthworks in Auckland, it is our job to keep the soil on either side of the retaining wall in place – we work against such natural forces as gravity and the geography of the project area, using our earthworks and construction knowledge to keep soil from slipping away, and instead render it stationary upon surfaces that it, under normal circumstances, would never stick to, such as steep and/or slippery slopes.
They are used to bound sloping soils, such as those found on hillsides or in steep backyards, between two different elevations. This bounding often occurs in areas where the terrain of which is possessing undesirable slope gradients or in areas where the landscape needs to be shaped specifically and severely as it is engineered for more specific purposes, like terraced /hillside farming or motorway overpasses.
Every single retaining wall supports a chunk of soil called a “wedge”. The wedge is defined as the soil which extends beyond the plane of failure, or as it is more commonly referred to, the “failure plane” (i.e. where earth would slip away without the presence of a retaining wall) of the soil type present at the wall site.
The most important consideration to make when building a retaining wall, with regard to the proper design, installation and maintenance procedures and methodologies, is the recognition and subsequent counteraction of the tendency of retained material to move downslope due to the unstoppable force of gravity. This downward movement creates immense amounts of lateral pressure directly behind the wall which depends on the angle of cohesive strength and internal friction of the retained material, as well as the magnitude and direction of movement pressures that are acting upon the retaining structure itself.
The pressure of the ground/soil/earth is, in a lateral sense, almost always going to give a zero reading at the top of the retaining wall and, in homogenous ground only, increase in proportion to a value that is at its maximum at the lowest possible depth of the earth being retained by the wall. Earth pressures will push the wall forward or overturn it if these pressures are not properly addressed and accounted for – in these cases, new foundations may need to be dug.
Additionally, any groundwater that either runs or collects behind the wall that is not immediately dispersed or dissipated by a drainage system causes immense hydrostatic pressure on the structure of the wall. The sum of all thrust or pressure can be assumed to be acting at roughly one-third upwards of the lowest depth for lengthwise stretches of identical height.
It is crucial to have the appropriate drainage systems in place behind any wall so that pressure on the wall’s design is limited, while at the same time preventing erosion. Drainage materials will reduce or completely eliminate the hydrostatic pressure, reduce water-caused erosive processes as well as improving the stability of what is behind the wall. Drystone retaining walls are normally self-draining.