July 17, 2007: Massive concrete pour

[Kingswood]

How thick is the concrete? How long will it take all that concrete to set?

[xoxoxoBruce]

Originally Posted by Kingswood

How thick is the concrete? How long will it take all that concrete to set?

As thick as they pour it (which means I don't know) and 31 days to max strength. Being a waterfront, quake prone, location, they probably were pouring the slab and the columns down to bed rock, all in one piece (monolith) for strength.

edit
Looking at the closed streets, empty parking lots and support trucks. I'd guess it was a very expensive Sunday operation. Overtime for everyone, even the cops blocking traffic.

[DucksNuts]

From a couple of regs at Life Without Buildings....

Ingeniero said...

I don't get the numbers quoted above though. The current slab being poured looks to be about 150'x150'which is 2500SY. Assuming that it is a mat footing, it would have to be 4.5 yards thick to be a monolithic pour. Even if the whole building had a mat footing with an assumed area of 5000SY then the thickness would be 2.3 yards or almost 7 FT? Does that sound right for that type of footing?

Jimmy said...

The photo shows the southern half (half!) of the ten-foot-thick RAFT slab, which will support the 35 story tower.