Leaching method with sand column
RCCC(rotation-column-column-column) mechanism
fly ash mixed with loess
self weight collapse Loess with big thickness
battened column with horizontal web member
beam-column with varying section
Beck’s column with varying cross-section
cement column with mixed cement and soils
circular steel column with tree shape
column with distinguishing features
column with same thickness
column with special shape section
column with special shaped cross section