C J Lewin Groundwork & Civils provides a full range of groundwork services to domestic and commercial clients throughout Greater Manchester, Lancashire and Yorkshire. On this page, we’ve detailed some of these services. Keep in mind that our fully qualified team of groundwork contractors offer free, no obligation estimates and guarantees of up to 10 years on finished projects. Whether you’re in our hometown of Rochdale, or a nearby city like Halifax, you’ll struggle to find such an exceptional standard of customer service elsewhere.
Should you have a question regarding groundworks or wish to discuss your requirements with a friendly member of our staff, pick up the phone and call 07961 224532 today!
Foundations & Oversites – Any development, from a small domestic extension to a sprawling office scheme, needs quality foundations to ensure it is stable and won’t sink into the ground or collapse. There are many different types of foundations that we’ll employ depending on soil conditions, the weight of a structure, lay of the land etc.
These include strip foundations, or footings. They are linear and provide support under walls. There are two variations of these types of foundations called trench fill foundations and rubble trench foundations. The former groundwork services involve excavating a trench and filling it with concrete, while the latter instead uses lose stone or rubble, improving drainage and reducing the amount of concrete used.
While these are perhaps the most common types of foundation our groundwork contractors use on projects in and around the Manchester and Halifax areas, there are other approaches we can take. Pad foundations are great at supporting concentrated/localised loads, for example columns. They are rectangular or circular in shape. Then there’s raft foundations, which cover large areas (often the area of an entire building). These are great at spreading load over a wide area, and are ideal in situations where ground conditions are suboptimal and there’s a risk of settlement.
There are also pile foundations, which are long columns made from reinforced concrete. These are usually pre-fabricated but our groundwork contractors can pour some varieties on site. They’re ideal in situations where traditional strip or pad foundations would need to be too deep to be practical.
Another one of the groundwork services we provide is the design and installation of oversites. These sit over the footings/foundations and provide a base to build on. As with foundations, there are a few different approaches we can take. The solid slab oversite uses compact hardcore and sand, under a damp proof course and insulation, under a concrete slab. Another option is beam and block floors, which are suspended floors made up of precast concrete beams and foundation blocks.
If you’re unsure which footings and oversites will best suit your project’s requirements, don’t worry. One of the big parts of what we do for clients in Manchester, Halifax and surrounding locales is provide advice and expert assistance at every stage of groundworks.
Underpinning – This process involves strengthening existing foundations that may not be strong enough to support further development. It might also be that over an extended period of time, foundations have weakened and are compromising the structural integrity of a property. Another reason you might require these groundwork services is if the ground below your property has become weak and unstable.
As with new foundations and oversites, there are multiple techniques our groundwork countractors can employ. One involves excavating the soil under foundations and pouring in concrete, which will provide a more solid base. Other methods our groundwork contractor employ are beams and bases. By transferring some of the load to a concrete beam, which then offloads it onto a concrete base, the load is more evenly spread.
Retaining Walls – As their name suggests, retaining walls hold back ground/water. They’re typically fashioned from poured concrete, concrete blocks or natural stone. These durable materials ensure the pressure the soil exerts on the wall isn’t overwhelming. Retaining walls are often built as part of wider hard landscaping projects, being groundworks that allow you to create a levelled and well-styled front or back garden.
Excavations – There are countless reasons why you might require an area of land excavating. It could be to build foundations and an oversite for an extension or similar property improvement, or to install a drainage system (which we also handle in our capacity as drainage contractors). We use quality plant equipment to make the process quick and easy, and as unobtrusive as possible.
While it might seem a project that can be handled on an amateur basis, we’d urge our Manchester and Halifax clients to consider that there’s more to excavation than meets the eye – not just the arduous physical labour involved. What is under the ground needs to be thought about and infrastructure like pipes and wires must be avoided. The type/nature of the soil also effects the depth the excavation needs to go-to, in order to support further work etc.