Laterally Loaded Piers
The design of laterally loaded piers drilled in cohesive soils and cohesionless soils has been investigated by many authors in the late 20th century. In 1955, Terzaghi used subgrade reaction as the criteria for the design of lateral load on piles. In 1957, Czerniak made exhaustive structural analysis on long and short piles based on Terzaghi’s suggested values of subgrade reaction. Computer programs were set using Peter Kocsis’, Reese’s, or Matlock’s analysis. Such programs have been used by many consulting structural engineers. The shortcoming of such analysis is that while the structural analysis is elaborate, the main source of input on soil behavior is foggy and very sketchy.