Hi-rise buildings are tall buildings or structures used as residential and/or office buildings. Hi-Rise buildings are designed using full three-dimensional analyses using dedicated programs. Reduced member stiffness, P-Delta analysis, response spectrum dynamic analysis, and accidental eccentricities are incorporated for lateral load cases. Drift and period control analyses are maintained for all structural systems. Floor analyses and designs are done using dedicated programs. Raft on piles foundation analyses and designs are performed using dedicated programs.