Cribbing?....when to draw the line?

[darkstar]

I need to print that pic for our crane man .
He would drop a load.
Last week he wouldnt even set up on a drive way that had a tiny tiny angle.
Woulve taken about 4 blocks on only one side.

 

[No_Bivy]

I need to print that pic for our crane man .
He would drop a load.
Last week he wouldnt even set up on a drive way that had a tiny tiny angle.
Woulve taken about 4 blocks on only one side.

any other crane guys there?

 

[arborworks1]

I watched some guys moving a house, they jacked it up tall enough to build a 10 ft ceiling gararge underneath. It was cribbed up with timbers for several weeks till the jobsite dried and they could get cement trucks to pour footings.
Cribbing was simple 2 down 2 across till they got the height.

 

[lumberjack]

It can be important to realize it was a static load, unlike what a crane's cribbing sees.

 

[No_Bivy]

do what?....dumb it down for me

 

[lumberjack]

A house basically sits still. Sure there's wind loads and such, but the weight is fairly static.

On a crane the loads can be concentrated on 1 outrigger or spreadover all 4 or a combination. The crane's slewing torque has to be counteracted by the cribbing, or in your case mainly the back set of outriggers.

Thus, what would get by holding up a house that holds still may not cut it for a crane.

 

[darkstar]

There is very little competition in the crane industry here.

 

[No_Bivy]

There is very little competition in the crane industry here.

you need your own then...

 

[MasterBlaster]

See the difference between an outrigger and a down rigger?

So you're calling a stabilizer a downrigger? Did you invent that word or is it commom jargon?

 

[No_Bivy]

A house basically sits still. Sure there's wind loads and such, but the weight is fairly static.

On a crane the loads can be concentrated on 1 outrigger or spreadover all 4 or a combination. The crane's slewing torque has to be counteracted by the cribbing, or in your case mainly the back set of outriggers.

Thus, what would get by holding up a house that holds still may not cut it for a crane.

ok.......................still bomber. flat lander

 

[lumberjack]

MB, fairly common. Down rigger goes straight down, outrigger goes out and down.

I was talking about Scott mentioning the house being held up on 2 per layer for 10' vertical lift.

The only thing I've had to use extensive cribbing on is my lift.

 

[No_Bivy]

so who "hairball" cribbing pics. I know mine was childs play

 

[MasterBlaster]

MB, fairly common.

Fairly common? You mean where you are? That's my point - Does ANYONE here use the word "downrigger?"

 

[No_Bivy]

outrigger....or the front stabilizer, thats it here

 

[MasterBlaster]

I think Carl invented that word.

 

[Mr. Sir]

Never heard of it. And I've done several hundred crane jobs in the last 25 or 30 years. On the other hand, I knew what he meant just by the context of it. Maybe it's a local jargon.

 

[MasterBlaster]

I concur.

 

[No_Bivy]

you ever consider your own crane Brett?

 

[Mr. Sir]

Nope, if I ran the crane, who would do the climbing?

 

[Dave Shepard]

Downrigger

I've heard of it used in crane/loader applications before as well.

 

[woodworkingboy]

Call them ashi around here...means legs, just like over at the Stihl calendar thread.

 

[No_Bivy]

ashi = ohshit

 

[MasterBlaster]

Downrigger

I've heard of it used in crane/loader applications before as well.

You're link certainly doesn't qualify your statement.

 

[Dave Shepard]

Wasn't meant to. It's only to get the wiki definition. It is used here once in a while, but is incorrect, in my opinion. Perhaps it is used in the crane industry as Carl defines it.

 

[MasterBlaster]

I just wanna know, no biggie.