While visiting the site for Burj Dubai I saw a crane repeatedly dropping a large concrete block with metal spike. On the same bit of sand. Anyone any ideas what he was doing?

I will try and stick some pics of it here.

http://www.imagestation.com/picture/sraid132/p8b38c9e781134c3d0960ddf73d3f8ec6/f79dadae.jpg

http://www.imagestation.com/picture/sraid132/p46619a5fa2b91f6642b579cc17a1b15a/f79dadab.jpg

http://www.imagestation.com/picture/sraid132/pac13f7339e59103a100a0e29f16a2eda/f79dadac.jpg

http://www.imagestation.com/picture/sraid132/p909c4b61c806190bd557fca93c119864/f79dadaa.jpg

maybe he's bored, depressed, got nothing to do,... ;)

do you have more pics of burj dubai site?

Its called Dynamic compation. Its way of compacting an area that has clay base soil conditions. If you drive a roller over it you move theground around, when you compact it like this to about 98%MOSH density they you wont get movement. This has to be repeated hundreds of time all over the site.

Intense long job
intresting

woa. thanks for that

I have seen a DC form a 2meter deep hole in the ground. Thats how uncompacted it was.

they were doing the same thing in the abu dhabi corniche!! Shakes the ground up like hell too!!!
Imagine being under one of 'em!!! :runaway:

:cheers: