![]() ![]() Ideally, you want to minimise the number of times the pump is engaged. Having said that, the larger the sump chamber the more time you have before the pump kicks in. There is no exact science on how to choose sump pump size and your focus should be on the pumps. What size / capacity of sump chamber is required? There are a few things to consider when choosing the most suitable sump chamber. Our PermaSEAL sump tanks however are designed with a large foot at the base of the chamber to prevent flotation. Most sump tanks are susceptible to floatation and hydrostatic pressures in high water table conditions. PermaSEAL’s sump tanks are manufactured from polyethylene and are extremely robust. It also contains the pump(s) that remove the water from the chamber to a safe evacuation point. The sump pump chamber also known as a sump pump bucket or tank collects water from the drainage system. You now have a suitable area to install the sump along with pipe work and electrics. Once this is formed you should create a box with block work to hold any surrounding earth back. You will then need to form a concrete base of at least 150mm thickness to site the sump base on. Then you will need to breakthrough the existing screed to create a sump hole of larger dimensions than the sump chamber. To add a sump pump to an existing basement, you will first need to decide on a suitable place for the sump. Retrospective Installation - Adding a sump pump to a basement The box should be appropriately sized for your sump chamber. It should be the same structural integrity as the rest of the concrete slab or raft. Formed Concrete Box - The idea here is to form a concrete box to accommodate the sump.Consult manufacturer’s instructions for more information. The sump chamber should be fixed securely within the reinforcing steel in the correct orientation and filled with water. Consult a structural engineer around this process. Steel cage - During the preparation of the reinforcing steel for the slab or raft form a cage of steel of sufficient size to take the sump chamber.You can either form a concrete box for the sump chamber, or create a suitable steel cage before pouring in the concrete. With a new build basement, you have two options. We will cover both situations in more detail in this guide, but here’s a quick overview: New build sump chamber installation In both cases you still need to correctly site and install the sump chamber and pumps, backfilling with concrete. The main difference between these two applications is how you create the sump hole for the chamber to sit in. The approach to installing the sump chamber depends on whether you are carrying out a new build or retrospective installation. You’ll also need an electrician to do the electrical work. Here’s some questions you can ask them to understand their approach and you can also get an idea of what’s involved in a cavity drainage installation project. Getting a sump installed by a professional basement waterproofing company makes sense - we highly recommend using a qualified basement waterproofing contractor. There are a number of complex elements that are critical to the success of your sump installation and your cavity drainage system as a whole. If you are looking for more basic information on what sump pumps are, check out our guide. There are a number of elements you need to consider when planning how to setup your sump. In this guide, we take you through everything from creating the sump hole, the sump setup to installing the correct pumps. A sump pump plays a vital role in providing drained protection, which means the set-up and installation needs to match your requirements. When creating a cavity drainage system, your design should include a sump pump to remove any water entering the system. ![]()
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