i have and its not wee slab either. hey been to Camden twice over the weekend - its like little italy there, as opposed to mangrove Greece all i have done is be the chauffeur
Speaking of Mangrove Greece and my slab, don't forget the RB Private Star Party (RBPSP) which will be held at a time most convenient to all attendees.
The 150 needs to air.
Speaking of Mangrove Greece and my slab, don't forget the RB Private Star Party (RBPSP) which will be held at a time most convenient to all attendees.
The 150 needs to air.
here is an example of what i have to work with. the concrete boys turned up got bogged and left. in their words they will return when it dries out. that may be never
also shows the soil - crud
i think i am going to risk it and do the big massive pour. it will either sink or swim need a big floating raft that is massive enough not to deflect. i think the titan will dampen things out for me. the whole setup also wobbled over at the other house? agggrrrhhhhhhh i feel like SHREK living in a swamp
Woah ! that is soft !!!
In that case pour your slab big and deep with plenty of rebo. I'd also dig deeper holes at the corners to try and get some stability.
Do you get flooded there ?
I think I'd also be getting my slab top surface above the general ground level just to stop any surface water intrusion.
Woah ! that is soft !!!
In that case pour your slab big and deep with plenty of rebo. I'd also dig deeper holes at the corners to try and get some stability.
Do you get flooded there ?
I think I'd also be getting my slab top surface above the general ground level just to stop any surface water intrusion.
well we would get a great view of the 1:100 but the PMF is a lilo event indoors
My pier is just bolted to the slab of my observatory. It is about 3m x 3m. My soil is pretty hard granite soil though. I sit on a chair next to the scope and have never noticed any movement in images if I move my chair.
My pier is just bolted to the slab of my observatory. It is about 3m x 3m. My soil is pretty hard granite soil though. I sit on a chair next to the scope and have never noticed any movement in images if I move my chair.
Ah ok, I was referring to the tire marks. I had a similar experience years ago. The concrete spindle reversed into my driveway and fubar the paving. Too heavy.
David, my experience of slabs and piers tells me that:
1. Those people telling you to separate the pier from the slab are right.
2. Those telling you the key to pier stability is depth are right.
3. Those telling you that the slab only needs to be 100 mm of concrete are right.
I would also encourage to to consider laying your mesh (before you pour the slab) on a base of capped soft drink bottles of the 1 litre kind. That will greatly reduce the thermal mass of the slab without reducing its stability.
I would also encourage to to consider laying your mesh (before you pour the slab) on a base of capped soft drink bottles of the 1 litre kind. That will greatly reduce the thermal mass of the slab without reducing its stability.
I do a separate centre section 900 deep x 1 x 1 on top then I leave a slight gap and then pavers for the floor. Works well.
Depends how large a scope you intend to mount as far as how large the central concrete will be. The larger/heavier the scope the bigger the concrete pier should be.
Pavers probably cool off a bit faster than a slab as well.
Thou know lad, ah built first 'servatry and it felt into swamp, so ah built second and it burned down then fell into swamp, and a third and it blew over, burned down and then fell into swamp, BOOOT, lad, the fourth one stayed oop!!
Thou know lad, ah built first 'servatry and it felt into swamp, so ah built second and it burned down then fell into swamp, and a third and it blew over, burned down and then fell into swamp, BOOOT, lad, the fourth one stayed oop!!
all i have done is be the chauffeur 
need a big floating raft that is massive enough not to deflect. i think the titan will dampen things out for me. the whole setup also wobbled over at the other house? agggrrrhhhhhhh i feel like SHREK living in a swamp
and that may be the difference
