Flood Defence – Flood Protection Solutions and Retaining Walls

With the weather patterns in the UK seeming to be changing, the threat of flooding is growing.  The increased level of rainfall has meant that at risk properties do not need to be close to a river or on low lying ground, as surface water, groundwater and overflowing sewers are becoming common causes of flooding.

There are many different potential solutions to flooding, these including various types of barriers and doors, many of these being deployable within minutes. However, in some cases, it is necessary to install more substantial flood defences, these being capable of protecting any home or business premises against much higher levels of flood water.

These flood defences have some similarities with retaining walls, one being designed to hold water back, while the other seeks to do the same to soil.

Normally these walls are used to retain soil often at different heights either side of the wall. There are four main types of retaining walls:-

  • Embedded Retaining Walls
  • Gravity Retaining Walls
  • Reinforced Soil Retaining Walls
  • Cantilever Retaining Walls

Embedded walls have deeper foundations and use the passive pressure of the earth underneath them to counteract (at least in part) what is know as the ‘active’ earth pressure on the wall itself. Normally this type of wall is used in basements, car parks and some railway stations. The walls themselves can be very large indeed, with foundation up to 40mtrs deep.

As the name suggests, Gravity Walls rely on the force of gravity they naturally produce to resist the pressure from the soil. They are normally built of concrete (sometimes in the form of large blocks), masonry or brick. However they are not normally suitable for use over 3mtrs, as beyond this height, their weight can put too much pressure on the soil below, this potentially resulting in slippage or total failure.

Reinforced Soil Retaining Walls, also known as ‘mechanically stabilised earth walls’ have been used for thousands of years, one example being the Great Wall of China. Today these use Geogrids – these consist of a 2-dimensional set of connected tensile elements or ribs, which together create a grid like structure. They are normally manufactured using high-density polyethylene (HDPE) or polypropylene (PP), these providing the required durability, stiffness and strength.

Cantilever walls, which are shaped like an L or an inverted T are smaller than Gravity walls, and because of the way they are constructed can handle heights of up to 5mtrs. However, they do need space behind the wall, so they are not easily used to support any existing slopes.

Choosing the Best Contractor – Heming Services – The Right Choice For Your Project

The first decision is to decide on which type is best, and here the engineers at Heming Services have decades of experience, so you can be sure that your individual requirements will be fully taken into consideration.

Flood Protection

At Heming Services we fully understand the terrible impact that floods have on your life, business, home and not least peace of mind. Our dedicated teams provide flood control for every eventuality with solutions designed to mitigate the effects of flooding. Talk to our engineers and let us work out the very best way of protecting you from the threat of flooding.

Retaining Walls Contractors & Flood Defence Company

Whether you require a Retaining Wall or a Flood Defence Barrier, our surveyor and install teams are rigorously trained to the highest standards, thus when it comes to meeting your expectations, you can be sure that these will be fully met, or exceeded, customer satisfaction being one of our main targets.