Cribbing?....when to draw the line?
- Thread starter No_Bivy
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MasterBlaster
Administrator Emeritus
A 22 is the one I use the most.
N
NeTree
Guest
Cribbing? I thought you were playing Jenga!
squisher
THE CALM ONE!!!!
Nice.
W
Wagnaw
Guest
Stumpy beaver likes to take firewood? ...I'll have to remember that.
One of the crane companies around here needs to get one of those big knucklebooms (not that buying a new crane now is really going to happen), but those things can operate of slopes, etc... no need for all that cribbing.
One of the crane companies around here needs to get one of those big knucklebooms (not that buying a new crane now is really going to happen), but those things can operate of slopes, etc... no need for all that cribbing.
PCTREE
Treehouser
4 bills for the crane. getting to put the kids to bed, priceless
Old Monkey
Treehouser
- Joined
- Mar 9, 2005
- Messages
- 8,764
Cribbing? It looks more like a game of Jinga or whatever that was called.
MasterBlaster
Administrator Emeritus
Did you read this entire thread, D?
SkwerI
Treehouser
Anything with a boom on a turntable needs to be leveled before use. Otherwise the strain on the turning gears is multiplied and the boom is always trying to swing 'downhill'. You have big hydraulic pistons to do the lifting but only small drive gears to do the turning.
lumberjack
Young man on the go
The only thing that isn't 100% Kosher is the front set of outrigger's pads are technically bridged. I'dda added another piece to the top and made all 4 touching so there'd be no briding.
As small as the gap is it's not a biggy.
I wish I could find a picture I have seen where a truck crane working in San Fran that had something like 12' of cribbing under the down rigger.
As small as the gap is it's not a biggy.
I wish I could find a picture I have seen where a truck crane working in San Fran that had something like 12' of cribbing under the down rigger.
darkstar
Rockclimber/ treeclimber
John i dont like it.
Looks like a house of cards to me.
These guys down here in Nooga hate to crib though so i dont get near the set up possibilities we could take advantage of.
Looks like a house of cards to me.
These guys down here in Nooga hate to crib though so i dont get near the set up possibilities we could take advantage of.
MasterBlaster
Administrator Emeritus
Reddog
TreeHouser
Nobivy, I circled in orange the bridging. As you stated no real weight was on the front one.
The only difference to how we crib is, going up we place the cribbing out closer to the edge. like the first layers in your pictures. Then the last two layers build solid. I was taught to not tee-pee build.
But all that said, it looks like something I would have worked under.
The only difference to how we crib is, going up we place the cribbing out closer to the edge. like the first layers in your pictures. Then the last two layers build solid. I was taught to not tee-pee build.
But all that said, it looks like something I would have worked under.
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lumberjack
Young man on the go
I was more talking about the front set of outriggers, not the downrigger.
MasterBlaster
Administrator Emeritus
Downrigger? Never heard that before.
lumberjack
Young man on the go
See the difference between an outrigger and a down rigger?
Al Smith
Mac Daddy
Over the years I've seen some massive loads held up by oak cribbing ,often several hundred tons .
The largest was a 4500 ton submarine in a dry dock .If things are properly cribbed I don't think there is an actual limit of how much can be held . One of the oldest rigging methods known if not the oldest .After literally thousands of years still works like a charm .
The largest was a 4500 ton submarine in a dry dock .If things are properly cribbed I don't think there is an actual limit of how much can be held . One of the oldest rigging methods known if not the oldest .After literally thousands of years still works like a charm .
