About the system we use to protect your basement from flooding
Chestergate remedial building services have a variety of sump pump station systems to offer our clientele depending on your particular site conditions at basement floor level.
At Chestergate we use the Delta Sump Pumping system. The pumping stations collect ground water and control management systems are installed under the cavity drainage membrane.
The ground water enters the pumping station by the water controlled management system installed in the new basement/cellar floor, it is then pumped away by a float activated submersible pump to an external drain at ground level.
To enhance the reliability of this system, various accessories are available including high level alarms, battery back up systems, and non return valves.
The back up unit is continually being trickle charged under normal conditions. Once mains power has failed, the unit will automatically switch over to battery power to enable the pump to run when required. The power pack will pump approx 8,100 litres on back up or switch on up to approximately 49 times on a 60 second cycles.
High water level alarm
This system will warn if a high level situation occurs. It is supplied with a rechargeable battery so the alarm will still sound in the case of mains power failure. An optional remote alarm can be fitted if required.
Quite simply water will always fall to a low level point in your basement due to gravity. Using our system water will be removed through the sump pump station and flooding can be eliminated.
The heart of the system is the Sump Pump Station. This is why we offer a number of design options, each one providing greater protection and backup should any unforeseen problems occur.
Waterproofing design criteria
Chestergate RBS Ltd complies to BS 8102: 2009 - This is a British Standard that should be as far as practically possible be adhered to by anyone who converts a basement into a habitable space.
All Type Ventilated residential and working areas including offices, restaurants, leisure centres etc need to comply to performance level grade 3, which is a dry environment.
The table bellow covers the items required to bring your basement into the Type C Grade 3 design along with guidance to water control management drainage system in the floor design.
|
Grade |
Basement Usage |
Performance Level |
1 |
Car parking, plant rooms (excluding electrical equipment) and workshops |
Some seepage and damp areas tolerable, dependant on the intended use. (b) Local drainage might be necessary to deal with seepage |
2 |
Plant rooms and workshops requiring a drier environment (than grade 1), storage areas |
No water penetration acceptable. Damp areas tolerable, ventilation might be required. |
3 |
Ventilated residential and commercial areas, including offices, restaurants etc, leisure centres |
No water penetration acceptable. Ventilation, dehumidification or air conditioning necessary, appropriate to the intended use. |