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Drainage Solutions and Tips For In-Ground Trampolines

In-ground Trampoline Drainage Pipe In-ground Trampoline Drainage Pipe

Many customers express concerns about their hole filling up with water when it rains and ask how to prevent this happening. The answer is not always straightforward, however the majority of in-ground trampoline installations we undertake require no additional drainage. Normal soil and sandy soil are quite porous and will easily absorb rainwater coming into the hole. At worst case there will be a small puddle in the centre of the hole which will disappear quite rapidly.

Why Problems Occur

Most problems arise usually when your soil is clay-based. Clay does not absorb water well and can form a sealed barrier, not allowing water to escape easily or quickly.

Another even more problematic issue is a high water table. In some low-lying areas the water will rise up from below and into the hole from below and around the sides. If you suspect you may have a high water table or concerned about this, then always dig a trial hole in the area where you’re proposing to site the trampoline to a depth of about 3ft and see if you hit water or if water seeps in from the side (leave a 24 hour period) and then re-visit.

When we do an install we often make a judgement call on whether additional drainage is required. Having gained considerable experience in installing in-ground trampoline, we can make a fairly accurate assessment.

 

Simple Soak-away Solution

Simple Soakaway Simple Soakaway

Whatever the soil conditions we would normally, however, always build a simple soak-away at the bottom of the hole. This will allow excess water to collect in the soak-away and slowly disperse into the ground. For ‘how to build a soak-away’ take a look at our FAQ page here. A soak-away will allow excess water to collect in one area and slowly disperse into the ground.

If however, you believe you have a very wet area and a lot of water collects, fear not, there are other options:

 

 

Your Drainage Options

Digging a 4" Drainage Pipe Digging a 4" Drainage Pipe

The first option is to put in a 4” drainage pipe to a lower area in your garden. This is simple to do and means digging a trench to a lower area and laying a drainage pipe. You will need to make sure the water coming through the pipe can run away freely e.g. continue down a slope. You do not want water to back up the pipe and inhibit the water in the trampoline hole from escaping.

A second option is to build a more substantial soak-away system. What has proved effective in the past is to make the soak-away deeper to try and break through the clay layer into more porous soil under the clay layer.

 

 

Electric Drainage Pump Electric Drainage Pump

The other option is to use an electric drainage pump to suck out the excess water from hole. This attaches to hose which can then be used to take the water away from the hole. This is in fact a surprisingly cheap and effective way of removing water quickly. You will however need to bring an electrical supply to the pump. We can recommend the Karcher GP40 Surface Mounted Water Pump for around £50.00 – just google it!

For more information on drainage for in-ground trampolines, visit the FAQ page on our website.

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