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Introduction to English Translation Foreword 1General Provisions .. 2Terms and Symbols 2.1 Terms 2.2 Symbols .. 3Conditions for Setting Surge Chambers . 3.IPrinciple for Provision of Surge Chambers 3.2 Initial Judgment on Provision of Surge Chambers 4Layout of Surge Chambers 4.1 Location Selection for Surge Chambers 4.2Pattern and Principle of Surge Chamber Arrangement . 4.3 Basic Types and Selection of Surge Chambers 5 Conventional Surge Chambers 5.1 Stable Cross-Sectional Area of Surge Chambers . 5.2 Surge Calculation for Surge Chamber .. 5.3 Basic Sizes of Surge Chambers . 6 Air Cushion Surge Chambers 7 Design of Surge Chambers for Water Diversion Projects. 7.1 General .. 7.2 Setting Principle of Surge Chambers . 7.3 Types and Selection of Surge Chambers . 7.4 Sizing of Surge Chambers 8 Structural Design and Detailing Requirements 8.1General . 8.2 Structural Design .. 8.3 Detailing Requirements 9Physieal Model Tests. Safety Monitoring and Operation Management .. 9.1 Physical Model Tests 9.2 Safety Monitoring.. 9.3 Operation Management.. Annex A Head Loss Calculation for Pressure Conduits A.1 Friction Losses .. A.2 Form Losses Annex B Surge Calculation for Conventional Surge Chambers B.1 General. B.2 Simple Surge Chambers . B.3 Restricted Orifice Surge Chambers B.4TwoCompartment and Overflow Surge Chambers B.5Differential Surge Chambers .. Annex C Surge Calculation for Air Cushion Surge Chambers .. Explanation of Wording