250t Liebherr Crane Accident.

**Quiggers** · 23rd October 2008, 10:06 AM

1). 9 days old eh? must've been something wrong with it

2). Who needs yet another shopping mall?

3). What's the cure time for concrete?

4). Will this floor take the weight of 'mum's taxis' when it's complete?

Question/note for blknight: One could assume it was lifting the prefab concrete walls into place? May give an indication of weight being lifted....

Q

**29dinosaur** · 23rd October 2008, 10:21 AM

Originally Posted by Quiggers

1).
2). Who needs yet another shopping mall?

Exactly my thoughts... we had one of these shopping mall monstrosities recently constructed about a km or so from our typical small country town heart and it has:
1) made it very hard for small businesses to survive - thanks to Big W and Woolworths
2) attracted every yobbo within 100km
3) because the banks went to this business - all the local aged people now have to travel to the centre rather than walk into town
4) ruined real estate values for the rest of us in town

Only wish someone stuffed upp in the construction of this centre...

**Tank** · 23rd October 2008, 03:42 PM

Originally Posted by Blknight.aus

see what happens when you miss an S.....

2.5meters....

as in about 1.5x1.5m per pad....

and I think I may have screwed the pooch on that too. The lookup chart Ive got only specifies slab thickness and reinforcments not if its a suspended slab or not.

IF the sydney warf rules are the same as the last time I was down there the pads are not only for load spread but for anti slip, (thats part of why they are wooden) I got caught out dogging for someone driving a 50 tonner and used the crane on rubber to put down the steel outrigger pads and promptly got a notice for not following local guidelines. a 13mm sheet of ply later and we were in business.

I thought railway sleepers were 1.8m long.... bloody heavy buggers to work when you have to stye up an outrigger 60 inches.

Just using railway sleepers as an example, the timbers we used to use were seasoned hardwood (cut from old bridge beams) 2.5Mx300mmx150mm, bloody heavy and splintery, Regards Frank.

**harry** · 23rd October 2008, 08:10 PM

police and the employer are looking for the driver of a crane which fell through a building site recently, his family are also worried for his safety.

i'll kill the bastard if i catch him said the crane owner

meanwhile in a town far from sydney,

arr, gidday, i'm looking for a job as a crane driver, been workin those big rigs in sydny an the last fella broke is crane, '
anythin going round ere eh?

**Blknight.aus** · 23rd October 2008, 08:21 PM

Originally Posted by Quiggers

1). 9 days old eh? must've been something wrong with it

2). Who needs yet another shopping mall?

3). What's the cure time for concrete?

4). Will this floor take the weight of 'mum's taxis' when it's complete?

Question/note for blknight: One could assume it was lifting the prefab concrete walls into place? May give an indication of weight being lifted....

Q

thats where I pulled 5t from... thats about what one of the narrow sections that the crane missed falling on in the first picture would weigh without a door way in it and what they were lifting wasnt a guess as the lifting gear laid out in the 3rd and 4th photo is pretty much exactly what you need to use to stand and lift those panels into place. my wildcard guess is that after the operator set up the boom he flung it out over the pickup point and the setdown points to make sure that the onboard computer gave him the numbers he needed to do the lift and as he passed it over and outrigger he went over the point loading limit of the slab or the supports and that was it... There still exists the posibility that the slab had the shoring member placed under the outriggers to push the load down to the main foundation , its a cheap but risky way of temporarily upping the point loading and max load of a given chunk of slab so that you can try on something like what they've done there. but if you get a shoring member in the wrong place in relation to the outrigger pad....... welll.... the pics speak for themselves...

I must stress that the 5t was a conservative estimate used it illuminates that even in a best case scenario (and assuming I didnt screw the math) they still had it wrong, very wrong. If they were lifting the big heavy main load bearing wall type panels they can go up past 60t in some instances and the last big one of those I saw going up had 3 cranes involved in the lift 2 big boys to lift it and one little one to drag the lifting gear into place

Thread: 250t Liebherr Crane Accident.

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