Pier footings concrete ratio

[tomato]

A millimetre is a quite a large deviation when you are imaging at <0.5  arcsec per pixel...😄

[WanderingEye]

14 minutes ago, tomato said:

A millimetre is a quite a large deviation when you are imaging at <0.5  arcsec per pixel...😄

Then please show me a picture of your ten tons of kit.... 😂😂

[newbie alert]

1 hour ago, WanderingEye said:

True, rigs get heavier, but not to that extent, the size of concrete you are talking about (1 cubic metre) would hold a ship in port....you would need somewhere in the region of ten tons of force to even move that block a mm.... 😀

 

I'm not passionate about that amount of concrete either but I know of a guy that knows when his area has a earth tremor as he has to slightly adjust his PA..

[Alien 13]

I do think a large block of concrete would make an excellent earthquake detector, a few years ago I had a very minor quake that shook the walls of the house and dislodged ornaments so ran outside to find the the ground completely still...

Alan

[tomato]

18 hours ago, WanderingEye said:

Then please show me a picture of your ten tons of kit.... 😂😂

Here you are, sorry but this was worth putting a cubic metre of concrete under it, and I ain’t taking any out for anybody.😎

[SamAndrew]

Did 0.5 m3 on my first build and that was far too much. There shouldn't be any forces on a well balanced scope, I'd maybe aim for a weight of concrete that is a few times the weight of your gear.

[SamAndrew]

I'd add that the cost of removal and disposal is far greater than the cost of pouring it in the first place.

[newbie alert]

On 20/01/2020 at 23:10, SamAndrew said:

Did 0.5 m3 on my first build and that was far too much. There shouldn't be any forces on a well balanced scope, I'd maybe aim for a weight of concrete that is a few times the weight of your gear.

I'd assume that would depend on your soil of where you're putting it, I'd guess at .5 of a cubic m to be far too little and future proofing ..it's harder to add more once it's done if you got it wrong..

[Alan White]

So how did this go?

Interested as I too am at the plan a pier stage and the hole is the first step, we’ll second after pier design is decided.

Hope you are ok by the way, long time no say hi Alan

[newbie alert]

On 15/04/2020 at 07:28, Alan White said:

So how did this go?

Interested as I too am at the plan a pier stage and the hole is the first step, we’ll second after pier design is decided.

Hope you are ok by the way, long time no say hi Alan

Hi Alan, I've just seen this, hope I explained enough for you in the message... if not ping one back...

[SamAndrew]

For the benefit of anyone else reading the thread it would be nice to see the update.

[newbie alert]

On 24/04/2020 at 13:33, SamAndrew said:

For the benefit of anyone else reading the thread it would be nice to see the update.

Just how nosey do you want to be..

There's nothing much to add,  unless you really need to know that I did my back in and put off digging the hole, there's a bit of personal content but as it's a personal message I keep it personal.. and as a update if you really need to know I've started digging it

[Swoop1]

That is a big looking hole you have there!

[newbie alert]

16 hours ago, Swoop1 said:

That is a big looking hole you have there!

Thanks

[tooth_dr]

2 hours ago, newbie alert said:

Thanks

That certainly wouldnt be considered a compliment over here

[paul mc c]

6 minutes ago, tooth_dr said:

That certainly wouldnt be considered a compliment over here

🤣...Yip would get you...as they say "a dig in the ear".lol

[tooth_dr]

Just now, paul mc c said:

🤣...Yip would get you...as they say "a dig in the ear".lol

LOL