Filling a Large Hole in the garden

[adamthriver]

Hi everyone,

We inherited a very large and deep hole in the garden. It is about 15 meters x 15 meters and about 1.5 meter deep. It was probably dug out with the intention of creating a large pond but just left there. We would like to fill it up so the final thing is a levelled garden, but would like advice as to what materials/aggregates to put right at the bottom and then what to put next etc.

Thanks in advance.

 

[motorbiking]

Assuming you don't need any soakaways etc. approx 2-3 tonne of broken brick, which is about £10 per tonne and 1-2 tonne of top soil (about £50 per tonne).

 

[Notch7]

Hi everyone,

We inherited a very large and deep hole in the garden. It is about 15 meters x 15 meters and about 1.5 meter deep. It was probably dug out with the intention of creating a large pond but just left there. We would like to fill it up so the final thing is a levelled garden, but would like advice as to what materials/aggregates to put right at the bottom and then what to put next etc.

Thanks in advance.

if thats 15 metres square by 1.5m deep -thats a 340 cubic metres

a grab lorry holds about 15 sq metres so thats 22 lorry loads

I would say talk to a local grab lorry / muckaway company

assuming it is a normal garden, what came out wouldve been mostly sub soil with a foot or so of top soil....on the top!

bear in mind -when digging out soil, it "fluffs up" by around 50% -so it will also sink a fair bit -you may need to compact it when it goes in.

Also you will need to finish high, lets it settle for about a year, then top it up.

 

[JP_]

Swimming pool?

 

[Tigercubrider]

What about some kind of rain water reservoir? Just thinking that retaining a void somehow, then covering /infilling might be easier than tons of solid material?

Thinking of either a large tank/ linked tanks or a liner with milk crate style boxes stacked inside and wrapped with the liner. Could be used for garden watering or grey water?

 

[JP_]

Log cabin with cellar?

 

[Munroast]

I'm working it out at around the 500 tonne mark, so a big job.

Before you fill it consider laying pipes at the bottom for a ground source heat pump - the hole is a good part of the cost in having these systems installed. would seem a waste just to fill it

 

[djn2020]

I'm working it out at around the 500 tonne mark, so a big job.

Before you fill it consider laying pipes at the bottom for a ground source heat pump - the hole is a good part of the cost in having these systems installed. would seem a waste just to fill it

Ground source heat pump is a fantastic idea. That's what I want to et installed one day as soon as it is economically more viable with higher takeup and economy of scale.