1.Introduction 1.2 Design procedure Geology Investigation Lab and In-Situ Tests Geotechnical Properties ↓ Designer Experience Excavation Method and Support System Structural Model and Design Predictions No 0k? Yes Construction 反年日源4 TONGILUNIVERSITY 4 Geology Lab and In-Situ Tests Designer Experience Investigation Geotechnical Properties Excavation Method and Support System Structural Model and Design Predictions Ok? Construction Yes No 1. Introduction 1.2 Design procedure