Quote:
Originally Posted by xelasnave
Hi Martin...250 mm OD and ID 225 mm expect.thats beefy..yum.
Did you put reo in before you added concrete?
My idea is to drive star pickets into the soil past my pad but in effect continue the line of pickets from soil to top inside the pier... I will probably wire them together ..if you have two seperated by say 4 inches ( I will do it with four) and wire them it becomes very strong ..I cant give enginering figures but you create a beam effect..
Anyways I will do my best if it is not satisfactory I will just build another observatory...that will be my sixth..but next time I will get a dome now that I have this remote stuff working for me...
Alex
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My piers sit on a 500 x 500 x 150 concrete pad with reo bars located 600mm below ground level. Piers are 450mm high out of the ground , so piers are effectively 1050 high sitting on the foundation pads. Each pier has 3 x 16mm reo bars in trefoil formation 50mm below the top of the pier to leave space for drilling and fixings
It will hold the harbour bridge up
That’s not the issue , the issue was the “WIDTH”
225mm is too narrow for the EQ8-R mount and the custom Sidereal Trading galvanised steel pier adapter
Diego advised 225mm is way to narrow , the chemset bolts on the pier adapter would only have 20mm of concrete to the edge , way to close for any strength, even with 20 to 40 Mpa concrete
That’s why he asked me why did make it so narrow , they should be 300mm dia minimum or 350mm to 380mm ideal
I said because I was always going to use a tripod arrange and through the centre pier in for good luck should I use it sometime in the future
Cheers
Martin