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174 posts

Master Geek
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Topic # 207244 15-Dec-2016 14:43
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im wanting to mount a steel (heavy) basketball post to a concrete footing

 

 

 

the post mounts by way of a steel bottom plate with 4x m12 holes

 

 

 

it needs to be removable, so anything like a dynabolt / stud anchor wont work

 

 

 

it needs to be flush at ground level when the post is removed (nothing for kids to run into) so embedding the threaded end in the concrete wont work

 

 

 

ive looked at ramset drop anchors, only size that is close is m10 and it embed about 50mm into the footing, not big or deep enough to hold

 

 

 

any ideas? something like a m12 female threaded socket, 200mm or longer. ive googled hard and come up empty


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453 posts

Ultimate Geek
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  Reply # 1689479 15-Dec-2016 15:11
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Get in touch with Anzor fastners (Spelling?!?)

 

They can source all sorts of weird and wonderfull


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  Reply # 1689490 15-Dec-2016 15:30
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Try flush head dynabolts

 

 

 

https://www.bunnings.co.nz/ramset-dynabolt-hex-316-stainless-steel-m12-x-60mm_p00194323

 

 

 

these are more removable than the standard dynabolt, as long as the hole is a fair bit deeper than the bolt for the end cone to drop off when unscrewing.

 

 


 
 
 
 


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  Reply # 1689494 15-Dec-2016 15:37
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greenbone:

im wanting to mount a steel (heavy) basketball post to a concrete footing


 


the post mounts by way of a steel bottom plate with 4x m12 holes


 


it needs to be removable, so anything like a dynabolt / stud anchor wont work


 


it needs to be flush at ground level when the post is removed (nothing for kids to run into) so embedding the threaded end in the concrete wont work


 


ive looked at ramset drop anchors, only size that is close is m10 and it embed about 50mm into the footing, not big or deep enough to hold


 


any ideas? something like a m12 female threaded socket, 200mm or longer. ive googled hard and come up empty



What you want is a Ramset Dynabolt 12mm drop in anchor

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  Reply # 1689537 15-Dec-2016 16:12
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greenbone:

 

im wanting to mount a steel (heavy) basketball post to a concrete footing

 

 

 

the post mounts by way of a steel bottom plate with 4x m12 holes

 

 

 

it needs to be removable, so anything like a dynabolt / stud anchor wont work

 

 

 

it needs to be flush at ground level when the post is removed (nothing for kids to run into) so embedding the threaded end in the concrete wont work

 

 

 

ive looked at ramset drop anchors, only size that is close is m10 and it embed about 50mm into the footing, not big or deep enough to hold

 

 

 

any ideas? something like a m12 female threaded socket, 200mm or longer. ive googled hard and come up empty

 

 

 

 

did the ramset idea work? Was it big enough?

 

 

 

alternatively, take a solid steel tube, get it cored out with a thread and concrete it into the ground. if it is too hard to get those deep enough, weld them on a plate, bury the entire plate. Make sure no crud gets in the thread when the post is removed.

 

 

 

This guy has a similar idea - but using sticking up bolts. Same adea but either thread nuts into the back of the plate or make a long female nut welded to the plate

 

https://www.youtube.com/watch?v=mrck-thMm8A

 

 

 

 





nunz

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  Reply # 1689639 15-Dec-2016 16:54
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I can't recommend Coastal Fasteners highly enough. The guys down there know their stuff and i'm sure if you called, you could talk them through the situation and they'll know what you need to do.


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Ultimate Geek
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  Reply # 1689679 15-Dec-2016 18:46
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Loxins

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  Reply # 1690792 16-Dec-2016 02:19
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Brunzy: Loxins

 

 

 

Not particularly helpful. Couldn't you have at least have added a few more words to present a meaningful post?


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  Reply # 1690810 16-Dec-2016 07:40
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https://www.blackwoods.com.au/part/03754609/anchor-masonry-loxin-rlm10-10mm

There you go, sits flush when removed.

Don't you have google ? ;-))

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  Reply # 1690866 16-Dec-2016 09:02
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eracode:

 

Brunzy: Loxins

 

 

 

Not particularly helpful. Couldn't you have at least have added a few more words to present a meaningful post?

 

 

Brunzy's one word post pretty much covers it!.. Loxin anchors are a - maybe better - option for OP.

 

Another flush, threaded anchor, but pressure from threading the bolt in does the seating.

 

For non structural (stock yard rails) we just use the cheap drop-in anchors:
- because they come in big boxes (really cheap)
- they're not super long (drilling holes in concrete is a slow job)
- can set them without stuffing around and threading each one in - theoretically requires a 'special tool' to set (we use a sledgie and a steel drive)
- they're strong (rated medium duty when correctly set)

 

If OP correctly uses ANY of the anchors pointed to in this thread the basketball hoop will NEVER come out.
I mounted a Netball hoop for my kids 5 years ago, with what I had at hand - some 5mm plate, M8 drop in anchors and threaded rod with nuts.
The pole's galv pipe & I welded in a threaded sleeve to allow different heights and netball/basketball hoops (turns out there's official kids & adult heights)

 

It's stood up to 3 boys climbing & swinging on the top, neighbour backing into it, endless kids swinging around it at high speed.

 




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  Reply # 1691063 16-Dec-2016 13:13
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appreciate all the knowledgeable answers, thanks. ill post a few pics  


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  Reply # 1691207 16-Dec-2016 19:22
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Weighing in late.... Ramset Tru-Bolts. Bloody awesome and hold the same as a dynabolt. But they are removable, unlike a dynabolt.

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  Reply # 1691258 16-Dec-2016 20:56
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A drop in anchor might be the go, a Chemset one might be better than a standard one.
The major issue will be crap getting into it when there's nothing there.




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