I am currently reviewing a project with a 250 000m3 basement 50% of which is below the water table. A secant pile wall is suggested as the perimeter solution, about 40% of the basement has an additional level of car parking the remainder is staorage or loading area. Above ground the building has a plan footprint of 35 000m2 with ground plus 2 levels of retail developemnt this is currently steel frame.
A top down solution using plunge columns has been suggested by the structural engineer. Reservations have been expressed here due to the large volume of excavated material to be disposed of.
Any observations, comments from fellow planners would be gratefully recieved.
A top down solution using plunge columns has been suggested by the structural engineer. Reservations have been expressed here due to the large volume of excavated material to be disposed of.
Any observations, comments from fellow planners would be gratefully recieved.