There are many types of retaining walls. There is the sheet pile retaining wall, cantilever retaining wall, and timber retaining wall. Each type has its advantages and disadvantages. These types are discussed below. Consider all the pros and cons before you choose a retaining walls that fits your home.
Cantilever retaining wall
A footing is a part of a Cantilever retaining wall repairs adelaide at the toe or heel. The footing is an important component of the wall. The soil above it acts as part of it. This adds weight to the footing base and increases its restoring time. Typically, a toe footing has a density of about 110 pcf.
Calculating forces and moments is the first step in designing a cantilever wall. This includes the sliding force, resisting force, and frictional force. These calculations are used for determining the material required to build a cantilever wall. Then, the computer software generates the moment and shear diagrams.
The pressure distribution is also calculated using a Boussinesq approach. The lateral earth pressures start at the top of a wall and rise as the wall falls. If not addressed, these pressures can cause the wall to overturn. Hydrostatic pressure from the groundwater behind the wall can also push the wall outwards.
Another option is anchored retaining walls. These walls are stronger and easier to construct. They are most commonly used in construction sites where heavy loads are expected to fall. The anchors can be either inverted T-shaped or L-shaped and are made of reinforced concrete. These walls are strong and can withstand greater forces than other retaining walls.
If you plan to construct a Cantilever retaining wall, it’s important to contact the local zoning authority. Your structure must be in compliance with storm-water runoff plans and local safety codes. Then, a professional engineer will review the structure of the retaining wall to ensure that it will be able to withstand lateral pressure from the earth.
The Coulomb or Rankine formulas are used to calculate soil resistance. It is usually between 100 and 350 psf/foot of depth. You can enter all the forces acting on the retaining wall in the soil resistance tab. This is an important part of the design process.
The primary function of a retaining wall is to restrain the slope. It prevents soil from shifting or eroding from its angle. A retaining wall is used to hold soil in place during landscape shaping projects, where slopes are undesirable, landscaping adelaide. The wall prevents soil sliding or collapsing. Two common types of retaining wall are sheet piles and bored piles. They can be temporary or permanent.
Timber retaining wall
The cost of a timber retaining wall depends on the materials used and the size of the wall. A 6-foot tall wall can cost between $40 and $65. The price of timbers will rise if the wall is taller and more complicated.
As the timber deteriorates, the connection between the different wall members weakens and may eventually fail. A timber retaining wall’s useful life can be less than 20 year depending on its location and the severity of the weather conditions.
Some gravel packings contain perforated tubing, which creates a French drain that diverts water to the wall’s end. If not covered properly, weep holes in walls can lead to rot.
If you are planning on building a timber retaining wall, make sure you follow building codes. Most building authorities will require a permit if the wall is higher than three feet. A plan must be submitted and a professional engineer consulted. Also, it may require heavy machinery and heavy lifting to dig a deep posthole.
Timber retaining walls can be made from several different types of timber. The most common timber for building a timber retaining wall is Douglas fir, but the materials are expensive. You can also use railroad tie as an alternative. These timbers can be treated with toxic wood preservatives or creosote. When heated in summer sun, they can produce a chemical odor.
A timber retaining wall can last for about 15-20 years. If the timbers are not treated, they may experience rot or fungus in as little as three years. A solid base of compacted gravel should be used to anchor a timber retaining wall. The base should be at minimum eight inches deep. In addition, the base should be at least one foot wide if the wall is two feet high. Finally, it’s important to level the base.
A timber retaining wall is an excellent choice for flat areas in the landscape or to protect a small hardscape feature. It is usually constructed of pressure-treated lumber, but some landscapers use 2×6 or 2×8 lumber. You can build a wall that stands on its own by using 6×6 pressure-treated lumber. Remember to use braces to support the weight of the timbers.