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Ground Anchor

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Huarachedevil
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Joined: 01 Dec 2018
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PostPosted: 17:11 - 06 Dec 2018    Post subject: Ground Anchor Reply with quote

Hi,

I want to put a ground anchor in my back garden.

I have some paving slabs and not much else.

Which of these sounds best?
A anchor into slabs
B change area of grass or slabs into concrete to attach anchor to - cost?
C tub of concrete to attach to
D something else?

Ideally I'd have an Asgard shed but as the garden has a slight incline, I'm told to concrete it level would cost thousands.

Ideally don't want to spend much over 200 altogether.

Here's an example anchor, below. Would a different one be better suited to the location?

https://www.ghostbikes.com/1126-oxford-anchor-force-extra-strong-anchor.html?istCompanyId=afe640d6-8de8-42e7-8d54-69f4d3462c7b&istItemId=xpapiiaqwl&istBid=tztx&gclid=Cj0KCQiArqPgBRCRARIsAPwlHoV1mXvGO2ap-1pKmHkKAaOisKLKZAmuXsMmvrM3NM0YCOW8IaH1tEUaAiapEALw_wcB
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Freddyfruitba...
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PostPosted: 17:26 - 06 Dec 2018    Post subject: Re: Ground Anchor Reply with quote

Huarachedevil wrote:
C tub of concrete to attach to

No question. Cheapest and also the most secure of your options.

Make it as big and heavy as you can. When you pour in the concrete, put a length of pipe through it first that you can thread your bike security chain through; then no need for any form of expensive anchor (which would otherwise be the most likely attack point anyway.)
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Riejufixing
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PostPosted: 17:33 - 06 Dec 2018    Post subject: Reply with quote

Stitch-drill a 150mm hole into one of your paving slabs, make a suitably-wide-and-deep hole under it a bit wider at the bottom than the top using a garden trowel. Mix some concrete (a bag of "ready mixed just add water and stir" from a DIY place like Wickes or whoever), tip it into the hole, push in one of those long ground anchors with an eye at the top, finish the concrete at slab top level, job done, looks nice, trip hazard.

If you don't want to make a hole in a paving slab, just lift one, make a hole, fill the hole and the place where the paving slab was, push in the ground anchor, finish the concrete surface, job done, trip hazard.

If you want to use the ground anchor you mentioned, remove a slab, make a hole/fill with concrete/finish the surface, let it set for a couple of weeks, drill & fit your ground anchor (trip hazard).

Protect new concrete from frost by putting something over it.

Edit: If you're doing this on a grassy area you can see what you need to do....
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owl
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Joined: 21 Oct 2016
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PostPosted: 17:44 - 06 Dec 2018    Post subject: Reply with quote

you could also drop the tub of concrete into the ground if you so desire and don't mind digging a bit
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Nobby the Bastard
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PostPosted: 19:18 - 06 Dec 2018    Post subject: Reply with quote

Or you could jus dig a hole and fill it with concrete.
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Riejufixing
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PostPosted: 19:25 - 06 Dec 2018    Post subject: Reply with quote

Nobby the Bastard wrote:
Or you could jus dig a hole and fill it with concrete.


That's what I did. Mind you, I haven't got his swanky patio.
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grr666
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PostPosted: 20:01 - 06 Dec 2018    Post subject: Reply with quote

Why not attach that anchor to the house? They are pretty heavy last time I checked.
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pepperami
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PostPosted: 20:35 - 06 Dec 2018    Post subject: Reply with quote

grr666 wrote:
Why not attach that anchor to the house? They are pretty heavy last time I checked.


HEADLINES: Bike thieves steal house! Shocked

Donít put it past them if your bike is a nice one Laughing
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Huarachedevil
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PostPosted: 14:20 - 09 Dec 2018    Post subject: Reply with quote

Thanks for your advice guys.

With help, I'm going to lift a slab, dig, fill with concrete and level off against the height of other slabs, with the anchor bolted in.

In terms of the house thing, I worry someone might take a sledgehammer to the anchor and put a hole in the house wall. I could imagine that. Here, they can mess up the concrete as much as they like so long as the house is standing and structurally sound 😁
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Ste
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Joined: 01 Sep 2002
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PostPosted: 18:09 - 09 Dec 2018    Post subject: Reply with quote

It's not a rented property?

If you take a sledgehammer to a paving slab then the slab will break very easily.

Dig a hole and fill it with concrete with a ground anchor set in it. Thumbs Up
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ThunderGuts
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Joined: 13 Nov 2018
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PostPosted: 15:55 - 12 Dec 2018    Post subject: Reply with quote

As bigger a hole as you can dig (watch out for any buried services though as you dig!) and fill it with concrete. Not a bad shout incorporating a heavy chain into it to function as the anchor, but non-security chain even when massive can be quite soft and vulnerable to attack (although it's likely to put off a casual thief). If you're drilling 16mm holes (probably this size) for an off-the-shelf anchor, borrow an SDS drill from someone.

You want to be putting 100kg of concrete in really, that's about 45 litres ish - borrow a cement mixer if you can, it'll make it easier and make the finished concrete better. Don't skimp on the cement, it'll make a weak mix which anything you screw to will more easily break apart on. Getting concrete proportions correct is important - simple but vital.

Assuming the house is bricks or blockwork, don't bother with the idea of attaching it to the house, it's dead easy to loosen a few bricks and they weigh nothing.

I know it's been said time and time again, but layers are the best deterrent; a decent anchor arrangement, very heavy chain (16mm proper security chain) and corresponding padlock, decent disc-lock(s) and a good cover will go a long way to making any thief look for an easier target, unless it's an uber-desirable bike in which case they'll probably find a way!
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owl
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PostPosted: 16:32 - 12 Dec 2018    Post subject: Reply with quote

you can get anchors that you can set directly in concrete, rather than setting then drilling

like this....

https://www.ultrasecuritycentre.co.uk/media/catalog/product/cache/1/image_lst_9c5cc5a64a1071ae2d8a1bfa280f96dd/400x500/9df78eab33525d08d6e5fb8d27136e95/p/j/pjb552-pjb-ground-anchors_2.jpg
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Nobby the Bastard
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PostPosted: 16:38 - 12 Dec 2018    Post subject: Reply with quote

The only trouble is all these options are that I keep my bike in my garage which has a variety of power tools that would make short work of all of these.
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owl
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PostPosted: 16:44 - 12 Dec 2018    Post subject: Reply with quote

Nobby the Bastard wrote:
The only trouble is all these options are that I keep my bike in my garage which has a variety of power tools that would make short work of all of these.


Don't leave your toys lying around, lock them up Razz

They'd make quite a racket I'm sure if you're home, motion triggered cameras for when you're not.
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