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2011 HYDRAULICS MANUAL - Louisiana

2011 HYDRAULICSMANUALH ydraulics (225) 379-1306 STATE OF LOUISIANADEPARTMENT OF TRANSPORTATION AND Box 94245 Baton Rouge, Louisiana 70804-9245 PREFACE The following text is a comprehensive documentation of LADOTD s Hydraulic Design Policies. This MANUAL is intended to be used in conjunction with LADOTD s Roadway Design Procedures and details MANUAL . While design procedures must always be subject to refinement, the material presented herein represents current LADOTD policies. The MANUAL is divided into categories based on topics with similar design criteria.

Design Procedures and Details Manual. While design procedures must always be subject to refinement, the material presented herein represents current LADOTD policies. ... 4.10 EROSION CONTROL PRODUCTS ----- 4 – 5 . 4.10.1 Roadside Ditch Lining Selection ----- 4 – 5 ...

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Transcription of 2011 HYDRAULICS MANUAL - Louisiana

1 2011 HYDRAULICSMANUALH ydraulics (225) 379-1306 STATE OF LOUISIANADEPARTMENT OF TRANSPORTATION AND Box 94245 Baton Rouge, Louisiana 70804-9245 PREFACE The following text is a comprehensive documentation of LADOTD s Hydraulic Design Policies. This MANUAL is intended to be used in conjunction with LADOTD s Roadway Design Procedures and details MANUAL . While design procedures must always be subject to refinement, the material presented herein represents current LADOTD policies. The MANUAL is divided into categories based on topics with similar design criteria.

2 The first part of a chapter gives LADOTD s design policies. Important theoretical information of applicable HYDRAULICS for the region is highlighted in the additional parts of a chapter, such as Part A, Part B, etc. Included in the theoretical parts are lists of resource references and approved computer programs for the required hydraulic calculations. The theoretical portion of a chapter does not cover all information and should not be considered a substitute for the designer having a thorough working knowledge of HYDRAULICS .

3 Although the writer of this MANUAL has strived for thoroughness, questions will undoubtedly arise which have not been covered. Such questions should be addressed to the HYDRAULICS Design Unit and amendments or revisions to this MANUAL may be made as the need arises. This page intentionally left blank. LADOTD HYDRAULICS MANUAL TABLE OF CONTENTS 2011 CHAPTER 1 GENERAL REQUIREMENTS PURPOSE ---------------------------------------- ---------------------------------------- --- 1 1 Design Waivers ---------------------------------------- ---------------------------- 1 1 PROJECT CLASSIFICATION ---------------------------------------- ------------------- 1 1 Rural

4 ---------------------------------------- ---------------------------------------- - 1 1 Urban ---------------------------------------- ---------------------------------------- 1 1 DESIGN STORM FREQUENCY ---------------------------------------- ---------------- 1 1 Table Design Storm Frequencies ---------------------------------------- - 1 2 Determination of 25 or 50 Year Frequency ------------------------------------ 1 2 Other Conditions to Consider a 50 Year Design Frequency ----------------- 1 2 PEAK DISCHARGE ---------------------------------------- ------------------------------- 1 3 General ---------------------------------------- -------------------------------------- 1 3 Gaged Stations ---------------------------------------- ----------------------------- 1 3 Ungaged Sites ---------------------------------------- ------------------------------ 1 3 ROADWAY

5 GRADE ---------------------------------------- ------------------------------ 1 3 Design Flood Stage ---------------------------------------- ------------------------ 1 4 Special Considerations for Urban Sections ------------------------------------- 1 4 Raising the Roadway in an Urban Section ------------------------------------- 1 4 Drainage Patterns in an Urban Section ---------------------------------------- -- 1 4 Flood Stage Investigation ---------------------------------------- ----------------- 1 5 Impacts on Road vs.

6 Impacts on Property -------------------------------------- 1 5 Traffic Considerations-------------------------- ----------------------------------- 1 6 FIELD SURVEY ESSENTIALS ---------------------------------------- ----------------- 1 6 DRAINAGE DESIGN FOR DETOURS ---------------------------------------- -------- 1 7 Detour Types ---------------------------------------- ------------------------------- 1 7 Hydraulic Capacity ---------------------------------------- ----------------------- 1 7 Bridge Detours ---------------------------------------- ---------------------------- 1 7 erosion control ---------------------------------------- ----------------------------- 1 8 Temporary erosion control ---------------------------------------- -------------- 1 8 Permanent erosion control

7 ---------------------------------------- -------------- 1 8 REFERENCES ---------------------------------------- -------------------------------------- 1 8 CHAPTER 2 REPORT AND PLAN PREPARATION GENERAL INFORMATION ---------------------------------------- --------------------- 2 1 HYDRAULICS REPORT ---------------------------------------- ------------------------- 2 1 Report Contents ---------------------------------------- ---------------------------- 2 1 Bridge Hydraulic Reports ---------------------------------------- ---------------- 2 2 PRELIMINARY PLANS ---------------------------------------- -------------------------- 2 2 Sheets Required ---------------------------------------- ---------------------------- 2 2 Plan Revisions ---------------------------------------- ----------------------------- 2 2 pH & Resistivity

8 ---------------------------------------- --------------------------- 2 3 Detours ---------------------------------------- -------------------------------------- 2 3 i LADOTD HYDRAULICS MANUAL TABLE OF CONTENTS 2011 PLAN-IN-HAND ---------------------------------------- ----------------------------------- 2 3 Existing Conditions ---------------------------------------- ------------------------ 2 3 Proposed Design ---------------------------------------- ---------------------------- 2 3 Culvert Extensions ---------------------------------------- ------------------------- 2 3 FINAL PLAN PREPARATION ---------------------------------------- ------------------ 2 4 Sheets Required

9 ---------------------------------------- ---------------------------- 2 4 Plan Submittal ---------------------------------------- ------------------------------ 2 4 DRAINAGE SHEETS REQUIRED IN THE PLANS --------------------------------- 2 4 Existing Drainage Map ---------------------------------------- -------------------- 2 4 Design Drainage Map ---------------------------------------- ---------------------- 2 5 Plan / Profile Sheets ---------------------------------------- ------------------------ 2 6 Storm Drain Plan / Profile Sheets ---------------------------------------- -------- 2 7 General Bridge Plan Sheet ---------------------------------------- --------------- 2 8 Summary of Drainage Structures Sheet ---------------------------------------- - 2 8 Summary of Estimated Quantities Sheet ---------------------------------------- 2 9 Standard


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