Cutting/trenching ice

   / Cutting/trenching ice #22  
Lay the whole network out on the top of the ice, weighted if necessary, and wait until spring.

Mother nature will do the job for you when the ice melts.

Um, if you get any wind in the spring, that pipe will be a twisted, broken mess.

I've watched an entire lakes worth of ice moving at a fast walking pace due to the wind. Of course, it was a bit breezy at the time, with up to 84 mph gusts. But most years we expect to see the ice moving at some time or another.

Besides that, make very sure that no snowmobilers will choose to cross the lake through the winter.

John
 
   / Cutting/trenching ice #23  
I've read the thread three times! I'd also like to know the total overall project scope! If precision placement is the goal, I'd paint it up on the ice every 50-100'. You could use a transit! Then use a power ice-fishing auger to drill holes at desired intervals. A concrete block, cord, and bleach bottle would mark your control points. Heavier weights with cables could be used at corners, etc. In the spring, you could fuse, glue, connect your lines and tow them out to the control points. once the network is floating in place, flood it to sink. Dependent on the water depth, and surface bottom, I can't see that you'd get it laid out more accurately. On a river crossing I worked on, the line from the concrete block is passed thru the bleach bottle handle then connected to the anchor line with a heavier clevise. The clevise slides down the anchor line (working against the bottles bouyancy and takes the slack out, so the floats line up perfectly! If you go with this, you may want to add a little RV antifreeze to the bottles, so they are just bouyant to 2-3" above the surface. That might keep them from being pulled around during the ice break-up! ~Scotty
 
   / Cutting/trenching ice #24  
I'm dying to find out what this is about...
Any geothermal pipe I've seen dropped in a lake was in coils. Unless maybe he's going to "Import" some Canadian whiskey. Old Joe Kennedy never thought of a pipeline ,I bet.
 
   / Cutting/trenching ice #25  
bobodu- 'Ole Joe' didn't need a pipe.......with a tanker like Ted! Ouch!...sorry.....ouch!, I'll be good......promise!....RIP Ted! ~S
 
   / Cutting/trenching ice #26  
The most practical idea so far has been the one on getting some divers to place precise anchors to the bottom during the summer then run pull rope thru all the anchors and up to shore. IF the line has to be installed in the winter for some reason, cut out an entry hole and exit hole on shore where the ropes come out and then fabricate the pipe and pull it thru all the anchors and out the other side. No ice cutting needed other than a chain saw to cut your entry/ exit points. You will need some sort of anchor system anyway so why not put them in now. Really dont understand why you want to wait till winter to do this either.
 
   / Cutting/trenching ice #27  
What about those gas powered concrete saws? I also like the idea of putting precise anchors to the bottom during the summer then run pull rope thru all the anchors and up to shore. Also what about putting the coils where you want them and then running hot water through them. would it melt the ice and sink where you wan them?
 
   / Cutting/trenching ice #28  
before we burnt down the old house i had to find and cap off the old water line to it.

the way we decided to do this in feb was to take a ditchwitch cut a trench 3' deep and about 6' long in the area were we thought the water line was.

when we cut it we would know were it its. The guy with the (large ride on trencher with backhoe) tried to dig up the spot ontop of the water line we found the ground fozen solid.

so he fliped the trencher around and cut 2 more slices about a foot apart parallel to the water line. then used the backhoe to pull out one huge chunk of frozen clay. the trencher cut slow but it still dug fine in the frozen ground. I suppose a rock chain version would work better especially if you had 2-3' of frost but his was reg dirt chain.
 
   / Cutting/trenching ice #29  
they make mechincal tree harvesters that have King size chain saws, if one made a dual bar unit some what like two small trenchers side by side, I would think that would work behind a hydrstatic tractor,

Bailey's - Mechanical Harvesting
 
   / Cutting/trenching ice #30  
Any chance you can drain the pond and simply lay it out?
 

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