Limestone blocs would solve a lot of these transport issues. Simply blast the block in to small, manageable pieces, then mix with tar and use on drive.
Limestone blocs would solve a lot of these transport issues. Simply blast the block in to small, manageable pieces, transport at your leisure then rebuild them on location with huge quantities of sika. Et voila, a replica of the tor in your location of choice.
Surely the easier option here would be to break down the limestone into small sizes roughly equal to handholds and footholds, then attach them to a frame build of cheaper lighter materials such as wood and metal...
Wonder if it'd come in under £100k...
Bonjoy what would the investment case be for a bunch of large granite boulders to be purchased from Trefor quarry (finest grained granite outside of some Scottish islands, still used for curling stones) and dumped in city centre parks, for you to chisel away at? Or would it be purely altruistic to keep you in new problems?
Quote from: jwi on March 23, 2022, 11:17:24 amQuote from: tomtom on March 23, 2022, 09:11:16 amQuote from: Falling Down on March 22, 2022, 09:53:33 pmI’d be _well_ keen on someone dropping a dozen or so big granite blocks in Regents/Hyde/Queens Park, Hampstead Heath, Wormwood Scrubs etc. It’s so dry down here you could climb outside nearly every day of the year.Unfortunately - the logistics of this are really hard/expensive. Having worked with people who dump large rocks in rivers to stop their banks eroding (etc..) once you get above 1m by 1m by 1m it all starts getting really expensive. Such a rock will weigh 2-3 tonnes - which is do-able with regular flat bed artic and a JCB etc.. If you wanted a decent sized bouldering boulder. You're probably looking at something 3 by 3 by 3m - which is 27m3 (assuming 2.5 tonnes per m3) is 67 tonnes. Even if smaller you're looking at north of 40t. Not transportable via regular road networks - and would need a very special crane to get it into place. I guess you could slice it into bits - but wouldn't be a nice solution. If you look at actual stone blocks as sculptures/monuments/things outside buildings - they only ever go up to a certain size... Hence - fibreglass/sprayed concrete options etc.. I looked into the weights of a gneiss boulder when we wanted to tilt an erratic boulder standing on flat rock situated close to downtown where I used to live ten years ago. We had already done all the obvious problems on the steep side and thought if we jack it up so it is about ten degrees steeper and pour some concrete under the other side, they would become about one grade harder. Turns out that the hydraulic jacks needed to flip a boulder are really expensive to rent. So it came to nothing, alas.That's interesting, I wonder what it is that makes them expensive? I know hydraulic presses in machine shops routinely go up to 100s of tons so presumably the components aren't super expensive. Maybe it's the form factor/logistics you need for usage out in the wild?
Quote from: tomtom on March 23, 2022, 09:11:16 amQuote from: Falling Down on March 22, 2022, 09:53:33 pmI’d be _well_ keen on someone dropping a dozen or so big granite blocks in Regents/Hyde/Queens Park, Hampstead Heath, Wormwood Scrubs etc. It’s so dry down here you could climb outside nearly every day of the year.Unfortunately - the logistics of this are really hard/expensive. Having worked with people who dump large rocks in rivers to stop their banks eroding (etc..) once you get above 1m by 1m by 1m it all starts getting really expensive. Such a rock will weigh 2-3 tonnes - which is do-able with regular flat bed artic and a JCB etc.. If you wanted a decent sized bouldering boulder. You're probably looking at something 3 by 3 by 3m - which is 27m3 (assuming 2.5 tonnes per m3) is 67 tonnes. Even if smaller you're looking at north of 40t. Not transportable via regular road networks - and would need a very special crane to get it into place. I guess you could slice it into bits - but wouldn't be a nice solution. If you look at actual stone blocks as sculptures/monuments/things outside buildings - they only ever go up to a certain size... Hence - fibreglass/sprayed concrete options etc.. I looked into the weights of a gneiss boulder when we wanted to tilt an erratic boulder standing on flat rock situated close to downtown where I used to live ten years ago. We had already done all the obvious problems on the steep side and thought if we jack it up so it is about ten degrees steeper and pour some concrete under the other side, they would become about one grade harder. Turns out that the hydraulic jacks needed to flip a boulder are really expensive to rent. So it came to nothing, alas.
Quote from: Falling Down on March 22, 2022, 09:53:33 pmI’d be _well_ keen on someone dropping a dozen or so big granite blocks in Regents/Hyde/Queens Park, Hampstead Heath, Wormwood Scrubs etc. It’s so dry down here you could climb outside nearly every day of the year.Unfortunately - the logistics of this are really hard/expensive. Having worked with people who dump large rocks in rivers to stop their banks eroding (etc..) once you get above 1m by 1m by 1m it all starts getting really expensive. Such a rock will weigh 2-3 tonnes - which is do-able with regular flat bed artic and a JCB etc.. If you wanted a decent sized bouldering boulder. You're probably looking at something 3 by 3 by 3m - which is 27m3 (assuming 2.5 tonnes per m3) is 67 tonnes. Even if smaller you're looking at north of 40t. Not transportable via regular road networks - and would need a very special crane to get it into place. I guess you could slice it into bits - but wouldn't be a nice solution. If you look at actual stone blocks as sculptures/monuments/things outside buildings - they only ever go up to a certain size... Hence - fibreglass/sprayed concrete options etc..
I’d be _well_ keen on someone dropping a dozen or so big granite blocks in Regents/Hyde/Queens Park, Hampstead Heath, Wormwood Scrubs etc. It’s so dry down here you could climb outside nearly every day of the year.
I thought Trefor quarry closed in the sixties? And if it's anything like the microgranite at Ty'n Tywyn you'd struggle to get a block much bigger than a fridge out of it.
I thought Trefor quarry closed in the sixties? And if it's anything like the microgranite at Ty'n Tywyn you'd struggle to get a block much bigger than a fridge out of it. Shap might be a better bet, right on a motorway too.Were the lines on the Shoreditch boulder chipped? I got the impression it was just left as is.
