Riprap anyone?

[Peter Thornton]

I have a stream running through my land which turns a corner away from a bungalow, below. The bank has become eroded and when it rises it overflows and threatens to flood said bungalow.

I have previously reinforce it with stakes and planks but these have now rotted and I need to replace them.

 

Having recently started cruising the canals I've noticed the bank reinforcing which I believe is called Riprap. I've found an American company that produces this http://www.quikrete.com/ProductLines/RipRap.asp

but can't locate any UK equivalent. I guess that CART either buy this in or perhaps make their own. It can only be as simple as putting a sand/concrete mix into a paper or hessian sack, one would suppose?

 

Does anyone know where to get either the article ready to use, or the right size sacks and details of the mix (4/1?) to use? All the sacks I can find seem to be too big.

 

Posting this in the hope that someone from CART reads these forums.

 

Thanks

Peter

 

[RLWP]

Riprap is a generic term for reinforcing a bank with large stones. Gabions for instance

 

Richard

 

Edit: Gabions, not gobions...

Edited June 14, 2015 by RLWP

[cuthound]

I've heard that there may be riffraff on the canals, but never riprap

[furnessvale]

I have a stream running through my land which turns a corner away from a bungalow, below. The bank has become eroded and when it rises it overflows and threatens to flood said bungalow.

I have previously reinforce it with stakes and planks but these have now rotted and I need to replace them.

 

Having recently started cruising the canals I've noticed the bank reinforcing which I believe is called Riprap. I've found an American company that produces this http://www.quikrete.com/ProductLines/RipRap.asp

but can't locate any UK equivalent. I guess that CART either buy this in or perhaps make their own. It can only be as simple as putting a sand/concrete mix into a paper or hessian sack, one would suppose?

 

Does anyone know where to get either the article ready to use, or the right size sacks and details of the mix (4/1?) to use? All the sacks I can find seem to be too big.

 

Posting this in the hope that someone from CART reads these forums.

 

Thanks

Peter

 

The only ones I have seen in the UK seems to be DIY mixes in hessian sandbags.

 

George ex nb Alton retired

[valrene9600]

Ask crt. Are they not the same size bags used by local authority in times of flooding.

[Murflynn]

I had a similar problem with the stream in my garden.

 

Bought 200 polypropylene sand bags and set to, mixing dry concrete (6 polybags ballast with 1 25kg bag cement) and filling the sand bags.

Stacked the bags with a finished angle of about 60 degrees to the horizontal.

Job's a goodun.

White plastic bag material is now eroded away where is was visible, with the help of a bit of scraping with a rake, and the bank is now well vegetated after 2 years.

[baz gimson]

never heard of RipRap,,,,,but the simple way to make the same thing is

 

buy standard hessian sandbags from builders merchant or online suppliers such as http://www.mudfords.co.uk/product/hessian-sandbag

 

buy a bulk bag of ballast from builders merchant and a quantity of cement

 

dry mix at your chosen ballast / cement ratio

 

fill bags half to three quarters full to allow for stamping bags down into shape

 

place bags in position .....bond by laying header, stretcher like a brick wall and lay them with a batter ie ten degrees from vertical back against the bank .Fold the filling end that is tied, under the bag and towards the direction of flow of the stream.

[jonesthenuke]

Wire basket gabions is an option especially if you have waste stone available, for example see:-

 

http://www.gabionbaskets.co.uk/

 

I have no connection with these people

[RLWP]

An article on Riprap here: http://npaper-wehaa.com/soil-erosion/2012/04/#?article=1568328

 

Richard

[Athy]

never heard of RipRap,,,,,but the simple way to make the same thing is

 

buy standard hessian sandbags from builders merchant or online suppliers such as http://www.mudfords.co.uk/product/hessian-sandbag

 

buy a bulk bag of ballast from builders merchant and a quantity of cement

 

dry mix at your chosen ballast / cement ratio

 

fill bags half to three quarters full to allow for stamping bags down into shape

 

place bags in position .....bond by laying header, stretcher like a brick wall and lay them with a batter ie ten degrees from vertical back against the bank .Fold the filling end that is tied, under the bag and towards the direction of flow of the stream.

Admirably lucid directions - he's got the Jimson lot!

[Peter Thornton]

Thanks everyone, much appreciated!

[RLWP]

Thanks everyone, much appreciated!

We like these kinds of questions, there is a price though... Come back and let us know what you do, won't you

 

Richard

[David Mack]

What you had before is 'campshedding'. Riprap is a generic term for loose rocks laid on the bed or banks of a watercourse. Gabions are the wire mesh baskets filled with rocks. What others are proposing is referred to as 'bagwork'.

 

For bagwork fill the bags with a dry mix of ballast and cement and let natural dampness do its work.

[NoFixedAbode]

I just openned this thread because I thought it was about 3D printing. am I the only one so daft ?

[RLWP]

I just openned this thread because I thought it was about 3D printing. am I the only one so daft ?

Looks like it

 

Richard

[carlt]

It's a while back now but, from my council civil engineering days I recall I specified 25% pea gravel (or similar) 65% sand and 10% cement in hessian sacks to reinforce drainage ditches and grips.

[Machpoint005]

>> I have a stream running through my land <<

 

 

I wish I had one of those. Ever thought of installing a micro turbine for electricity generation?

[Peter Thornton]

I wish I had one of those. Ever thought of installing a micro turbine for electricity generation?

Lots of times! But it's not quite as easy as it looks.

[Alan Saunders]

It's a while back now but, from my council civil engineering days I recall I specified 25% pea gravel (or similar) 65% sand and 10% cement in hessian sacks to reinforce drainage ditches and grips.

I can do 6:2:1 well mixed but those halves will cost you extra!

[Tony Brooks]

And I thought he was on about the post and rag bank stabilisation solution but had missed the W out of the name.

 

 

 

 

 

 

 

As in rip and wrap around the prop!

Edited June 18, 2015 by Tony Brooks