Grit1645

Nov 25 2008, 10:19 PM

mynameis

Nov 21 2008, 09:26 AM

Does anyone know what is inside the space from a -> b?

Quote:

 

Quote:

 

Rock with a permissible bearing pressure of 39 kg/cm2 occurs at a depth of 22.5 m. The excavation for the basement and foundations, area 440,000 in2, is enclosed by a 90 cm thick reinforced concrete diaphragm wall anchored back into the surrounding ground. The column foundations comprise two-layer grillages which transmit the loads through a concrete base slab, 2.1 m thick, to the underlying rock.

32 Rock
33 Concrete base slab
34 Grillage beams
36 External column
37 Core column

I'm not sure you understand the diagram, mynameis. The one on the top left is a plan view of the entire 211 by 211 footprint. The two pieces in the center of it are the footings of the core columns (basically 87 by 135 feet). The sections below (aa and bb) are drawings cut THROUGH the foundations, kind of like if you have cut a slice.