The Guidelines consists of twelve chapters and five appendixes: 1 General Provisions, 2 Glossary and Symbols, 3 Ventilation Planning and Survey, 4 Ventilation Mode, 5 Ventilation Standard, 6 Required Air Volume Flow, 7 Ventilation Calculation, 8 Duct, 9 Fan Room and Ventilation Shaft, 10 Smoke Prevention and Extraction in Case of Tunnel Fire, 11 Fan Selection and Layout, 12 Design Principles of Ventilation Control, Appendix A Onway Resistance Coefficient, Appendix B Pressure Loss Coefficient of Ushaped and Zshaped Ducts, Appendix C Other Pressure Loss Coefficient of Tunnels and Ducts, Appendix D Common Units and Unit Conversion in Fluid Mechanics, and Appendix E Examples of Ventilation Calculation.