Sorry gentlemen, Tried to keep it concise and general. Here's a bit more info.
Going to be reclaiming land (Crushed, graded and cleaned gravel demolition waste).
Going to construct diaphragm wall in reclaimed land, maximum depth to bedrock from surface of land reclaim is 20m.
Then excavate reclaimed land on river side of wall, therefore leaving vertical concrete diaphragm wall.
Bedrock is mostly couple metres of weathered andesite on top of intact andesite. Some glacial deposits and both cohesive and granular alluvium on top of bedrock, again only a few metres.
Maximum tidal height is at 3.4m OD.
Landfill height at 6m OD.
Bedrock at -13m OD.
Mike, I was looking along what you are saying. Excavating down into bedrock, in with reinforcement and concrete to displace slurry.
Not to sure on exact values of demolition infill but going to treat as a gravel with general values until then.
A bit unsure of where to start on the whole design calcs, been trying to find some worked exmaples for a similar situation.
Also got a column of a building coming down on to the diaphragm wall, with a preliminary load of 500 kN.
Thanks, really appreciate the help.
