Digging the Soakaway! | Single Storey Extension #7 

Haha thanks for watching bud! 👍

Thanks! 👍

Thanks for watching, have an awesome week 👍

Fwfuwbyh❤😅

Thanks David 👍

I can see the idea of putting a vertical piece of 110 mm pipe to raise the level but it’s only 110 and it won’t take much to fill that diameter / vertical pipe should the water raise to the top of the crate inlet pipe

Thanks for watching! 👍

Thanks, have an awesome week 👍

Thanks for watching Maria! 👍

😂

Better acting here though 😁

@@simonhughes6267 🤣

My god they just keep digging, more gravel, more concrete! What are they going to build back there “The Shard”

Thanks Gino, have an awesome week! 👍

Thanks guys 👍

@@BuildWithAE 🧱👍🏽

One might presume, as an older house, there is no separate storm water only drainage, and you're not allowed to connect to the foul drainage either !

@@thetessellater9163 thanks for the reply, just out of interest, if that’s the case does the current storm water from house guttering go down the drain, or to a soak away?

@@duncanlane22 Some modern house builds have all the surface water drainage systems (gutters down pipes, channel drainage) connected to soakaways. It's part of a sustainable drainage system (SUDS). It is considered not to overload existing surface water drainage systems (from buildings/roads). However, it's effectiveness is dependant on the ground conditions (sand/gravel is much better than clay). There are requirements for separation from housing/structures (so that water dissipation from the soakaway does not cause damage).

I thought that too, with any excavations below 1.8 metres (or was it 1.5 m?) you should have trench shoring if a person needs to go in ! Fines are large for this breach if HSE might watch this? I seem to remember this from deep founds dug near trees back in my day!

@@thetessellater9163 I have to do a bit of a dig out and wondered what depth you had to shore up.....and did the soil have anything to do with it. Was trying to crib some knowledge...

IKR

You cannot connect rain to foul it’s illegal .

As stated above, you are not allowed to connect rainwater into the foul drainage system, in the UK. Nor will the water soak away in that clay, so a tricky situation; the customer may still have flooding in the garden, but maybe further from the house than before!

You can connect to the sewer but you need to demonstrate that other options are not suitable or available and BCO to agree. Then get permission from whoever owns the system on that area.

Hi Everyone Building a soakaway in clay soil can be challenging due to the low water infiltration rates achieved in most clayey soils. Some clay soils will achieve virtually zero infiltration and in these soils a soakaway will not be practical. Other clay soils will achieve a low infiltration rate which makes a rainwater soakaway in clay possible. However, in these soils a conventional soakaway pit is often only effective when it is built very deep to increase the infiltration surface and includes a large storage area to store water while it slowly soaks away. Soakaway crates in clay have the advantage of a large void space which can be advantageous in such conditions. Even in these cases the soakaway can struggle to comply with time of emptying requirements due to the low infiltration rate. Soakaway Design in Clay Soils Where a low infiltration rate is expected such as in clay soils it is critical that a thorough site investigation and infiltration testing is done before the detailed design of any soakaways. A site investigation may reveal better infiltration layers either in another part of the site or in strata beneath the clay layers. In this case sometimes a deep bore soakaway can be installed through the clay layer into the infiltration strata. One advantage of soakaways in clay soils is that the small pores are less likely to become clogged with sediments which build up within the soakaway. This can make soakaways built in clay soils more robust than some other soils. How to Build a Soakaway in Clay Soil Digging a soakaway in clay soil can be approached in the same way as in any other soil, as described here. Particular care should be taken to ensure that the excavation does not become smeared when using mechanical diggers. If smearing does take place the sides of the excavation should be roughened using hand tools. Other Ground Conditions The installation of a new soakaway can have significant effects on the surrounding soils. For this reason it is important that the existing ground conditions are assessed before the detailed design of a new soakaway is completed. Below is a summary of some of the most common issues; Poorly Consolidated Soils The installation of a new soakaway can cause instability in poorly consolidated soils. This is because the new source of water infiltrating through the soils can lead to wash out of fine materials from the soil. This can lead to significant voids forming over time which are then prone to collapse. In some soils the infiltrating water can also cause the soil to consolidate leading to settlement. Fill Materials Infiltrating water passing through loosely compacted fill materials can cause the fill to compact, leading to differential settlement. This is particularly significant in deep layers of fill material, such as infilled quarries or landfill sites. In some cases the fill layers can be protected from infiltration using impermeable liners. Shrinkable or Expansive Clays Some types of clay soils can shrink or expand depending on the water content of the soil. A new soakaway will have localized effects on the water content of the surrounding soils which can lead to shrinkage and differential settlement of some clays. All the best Tony 👍

1:40 to 1:80 is best. As a rule of thumb, an inch per metre to half inch per metre, to mix measures!

@@thetessellater9163 Thanks for the reply, keep digging boys you might hit oil soon.👍👍👍

I was just wondering that having just done that test myslef and the calculations coming back with a pretty big 11 cubic meter soakaway!

@@JurassicJungle christ.. unless you live in an aircraft hangar i cant see that being justified. What other options do you have? Are there any land drains nearby you can connect into?

@@JurassicJungle have a look online at the suds hierarchy if you haven't done so already

@@ninety1464 We are adding 120m Sq of new roof space which doubles the current property. We have a stream with riparian rights which we could release water into but we have to show how we can attenuate. We did the infiltration test and the report came back with a soakaway of 6m x 1.2 x 1.5! There is a history of surface water flooding. What annoys me is the house across the road added a similar extension recently but was not obliged to add any soakaways at all.

@@JurassicJungle sounds like you have a nice property! have building control asked for or over seen the percolation test? ordinarily 240m² of roof would necessitate a soakaway just under 5m² (as im sure you well know).. building comtrol may be satisfied with that (unless youre not willing to take the risk yourself) If possible then utilise the stream as an overflow perhaps this would be sufficient

Hi Paul thanks glad you are enjoying the channel, Building a soakaway in clay soil can be challenging due to the low water infiltration rates achieved in most clayey soils. Some clay soils will achieve virtually zero infiltration and in these soils a soakaway will not be practical. Other clay soils will achieve a low infiltration rate which makes a rainwater soakaway in clay possible. However, in these soils a conventional soakaway pit is often only effective when it is built very deep to increase the infiltration surface and includes a large storage area to store water while it slowly soaks away. Soakaway crates in clay have the advantage of a large void space which can be advantageous in such conditions. Even in these cases the soakaway can struggle to comply with time of emptying requirements due to the low infiltration rate. Soakaway Design in Clay Soils Where a low infiltration rate is expected such as in clay soils it is critical that a thorough site investigation and infiltration testing is done before the detailed design of any soakaways. A site investigation may reveal better infiltration layers either in another part of the site or in strata beneath the clay layers. In this case sometimes a deep bore soakaway can be installed through the clay layer into the infiltration strata. One advantage of soakaways in clay soils is that the small pores are less likely to become clogged with sediments which build up within the soakaway. This can make soakaways built in clay soils more robust than some other soils. How to Build a Soakaway in Clay Soil Digging a soakaway in clay soil can be approached in the same way as in any other soil, as described here. Particular care should be taken to ensure that the excavation does not become smeared when using mechanical diggers. If smearing does take place the sides of the excavation should be roughened using hand tools. Other Ground Conditions The installation of a new soakaway can have significant effects on the surrounding soils. For this reason it is important that the existing ground conditions are assessed before the detailed design of a new soakaway is completed. Below is a summary of some of the most common issues; Poorly Consolidated Soils The installation of a new soakaway can cause instability in poorly consolidated soils. This is because the new source of water infiltrating through the soils can lead to wash out of fine materials from the soil. This can lead to significant voids forming over time which are then prone to collapse. In some soils the infiltrating water can also cause the soil to consolidate leading to settlement. Fill Materials Infiltrating water passing through loosely compacted fill materials can cause the fill to compact, leading to differential settlement. This is particularly significant in deep layers of fill material, such as infilled quarries or landfill sites. In some cases the fill layers can be protected from infiltration using impermeable liners. Shrinkable or Expansive Clays Some types of clay soils can shrink or expand depending on the water content of the soil. A new soakaway will have localized effects on the water content of the surrounding soils which can lead to shrinkage and differential settlement of some clays. This is a great document we work to and BCO required us to do something all the best Tony 👍

Building a soakaway in clay soil can be challenging due to the low water infiltration rates achieved in most clayey soils. Some clay soils will achieve virtually zero infiltration and in these soils a soakaway will not be practical. Other clay soils will achieve a low infiltration rate which makes a rainwater soakaway in clay possible. However, in these soils a conventional soakaway pit is often only effective when it is built very deep to increase the infiltration surface and includes a large storage area to store water while it slowly soaks away. Soakaway crates in clay have the advantage of a large void space which can be advantageous in such conditions. Even in these cases the soakaway can struggle to comply with time of emptying requirements due to the low infiltration rate. Soakaway Design in Clay Soils Where a low infiltration rate is expected such as in clay soils it is critical that a thorough site investigation and infiltration testing is done before the detailed design of any soakaways. A site investigation may reveal better infiltration layers either in another part of the site or in strata beneath the clay layers. In this case sometimes a deep bore soakaway can be installed through the clay layer into the infiltration strata. One advantage of soakaways in clay soils is that the small pores are less likely to become clogged with sediments which build up within the soakaway. This can make soakaways built in clay soils more robust than some other soils. How to Build a Soakaway in Clay Soil Digging a soakaway in clay soil can be approached in the same way as in any other soil, as described here. Particular care should be taken to ensure that the excavation does not become smeared when using mechanical diggers. If smearing does take place the sides of the excavation should be roughened using hand tools. Other Ground Conditions The installation of a new soakaway can have significant effects on the surrounding soils. For this reason it is important that the existing ground conditions are assessed before the detailed design of a new soakaway is completed. Below is a summary of some of the most common issues; Poorly Consolidated Soils The installation of a new soakaway can cause instability in poorly consolidated soils. This is because the new source of water infiltrating through the soils can lead to wash out of fine materials from the soil. This can lead to significant voids forming over time which are then prone to collapse. In some soils the infiltrating water can also cause the soil to consolidate leading to settlement. Fill Materials Infiltrating water passing through loosely compacted fill materials can cause the fill to compact, leading to differential settlement. This is particularly significant in deep layers of fill material, such as infilled quarries or landfill sites. In some cases the fill layers can be protected from infiltration using impermeable liners. Shrinkable or Expansive Clays Some types of clay soils can shrink or expand depending on the water content of the soil. A new soakaway will have localized effects on the water content of the surrounding soils which can lead to shrinkage and differential settlement of some clays. All the best Tony 👍

9 3:54 😅 4:20 ​@@BuildWithAE