Planning & Zoning - Stormwater Design Manual

Storm Water Design Manual


Chapter 1 - Selected City Regulations

Chapter 1 - Table of Contents
1.1 State Water Buffer Variance Procedure
1.2 Zoning Ordinance
1.3 Floodplain Management Ordinance
1.4 Soil Erosion and Sediment Control Ordinance
1.5 Subdivision Regulations
1.6 Wellhead Protection Ordinance
1.7 Specifications and Installation of Water Mains
1.8 2020 Comprehensive Plan

Chapter 2 - Hydrology

Chapter 2 - Table of Contents
2.1 Hydrologic Methods
2.2 Symbols and Definitions
2.3 Design Frequency and Rainfall

2.4 Rational Method
2.5 Example Problem – Rational Formula
2.6 SCS Unit Hydrograph
2.7 Simplified SCS Peak Discharge & Hydrographs
2.8 Water Quality Storm – Volume and Peak Discharge
2.9 U.S. Geological Survey Flow And Hydrograph Method
2.10 SCS Unit Discharge Hydrographs
    Figure 2.10-2    Figure 2.10-3
    Figure 2.10-4    Figure 2.10-5
    Figure 2.10-6    Figure 2.10-7
    Figure 2.10-8    Figure 2.10-9
    Figure 2.10-10  Figure 2.10-11
2.11 Impervious Area Calculations
2.12 References

Chapter 3 - Storm Drainage Systems

Chapter 3 - Table of Contents
3.1 Overview
3.2 Symbols And Definitions
3.3 Gutter Flow Calculations
3.4 Grate Inlets Design
3.5 Curb Inlet Design
3.6 Combination Inlets
3.7 Storm Drains
3.8 Computer Programs
3.9 References

Chapter 4 - Design of Culverts

Chapter 4 - Table of Contents
4.1 Introduction
4.2 Symbols and Definitions
4.3 Engineering Design Criteria
4.4 Design Procedures
4.5 Culvert Design Example
4.6 Design Procedures for Beveled-Edged Inlets
4.7 Flood Routing and Culvert Design
4.8 HY8 Culvert Analysis Microcomputer Program
4.9 Design Charts and Nomographs
4.10 References

Chapter 5 - Open Channel Hydrology

Chapter 5 - Table of Contents
5.1 Symbols and Definitions
5.2 Design Criteria
5.3 Manning’s n Values
5.4 Uniform Flow Calculations
5.5 Critical Flow Calculations
5.6 Vegetative Design
5.7 Riprap Design
5.8 Uniform Flow – Example Problems
5.9 Gradually Varied Flow
5.10 Gradually Varied Flow – Example Problems
5.11 Rectangular, Triangular and Trapezoidal Design Features
5.12 Open Channel Design Figures
5.13 Triangular Channel Nomographs
5.14 Grassed Channel Design Figures
5.15 References

Chapter 6 - Storage Facilities

Chapter 6 - Table of Contents
6.1 Introduction
6.2 Symbols and Definitions
6.3 Design Criteria
6.4 General Procedure
6.5 Outlet Hydraulics
6.6 Preliminary Detention Calculations
6.7 Routing Calculations
6.8 Example Problem
6.9 Trash Racks and Safety Grates
6.10 References

Chapter 7 - Energy Dissipation

Chapter 7 - Table of Contents
7.1 Symbols and Definitions
7.2 Design Criteria
7.3 Design Procedure
7.4 Riprap Aprons
7.5 Riprap Basin Design
7.6 Baffled Outlets
7.7 Microcomputer Example Application
7.8 References

Chapter 8 - Water Quality Best Management Practices

Chapter 8 - Table of Contents
8.1 Non-Structural BMPs
8.2 Water Quality Performance Criteria
8.3 Structural BMP Specifications
8.4 Streambank Restoration
8.5 Example Design Applications
8.6 Guide for Maintenance of BMP Facilities
8.7 Wetland Species
8.8 References

Chapter 9 - Miscellaneous

Chapter 9 - Table of Contents
9.1 Easements
9.2 Site Grading
9.3 Storm Water Detention
    Amendment 9.3.2.3.5
9.4 Culverts and Piped Drainage Systems
9.5 Surface Drainage
9.6 Extended Detention
9.7 Storm Water Management
9.8 Water Quality Best Management Practices
9.9 Storm Water Detention Guidelines
9.10 Culverts and Pipe Collection System Guidelines
9.11 Dams

Chapter 10 - Review Checklists and Electronic File Format

Chapter 10 - Table of Contents
10.1 Completeness Review Checklist
10.2 Review Checklist - Plans
10.3 Storm Water Management Report
10.4 Review Checklist - TSS Spreadsheet
10.5 Completeness Review Checklist
10.6 Review Checklist - Flood Study
10.7 Final Plat Review
10.8 Electronic File Requirements for Record or As-Built Drawings
10.9 Administrative and Judicial Appeal
 

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Directions
Directory
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Downtown Architectural Review Board
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Elections & Voting
Electric Department
Employment
Engineering Department
Gas Department
General Code of Ordinances
Georgia Poison Control
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Gwinnett Clean & Beautiful
Gwinnett County Animal Control
Gwinnett County EMS
Gwinnett County Extension Service
Gwinnett County Government
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Gwinnett County Public Schools
History
How Do I
Lawrenceville Development Authority
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Lawrenceville Police Department
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   - About LTTA
   - LTTA Website
Licenses & Permits
Master Plans
Mayor
Municipal Court
North GA Water Planning District
Planning & Zoning Commission
Public Parking
Public Safety
Renew Business
Rezoning Application
Rhodes Jordan Park
Sanitation Department
Schools, Private
Schools, Public
Sign Permit
Special Use Application
Start Business
Stormwater Applications
Stormwater Department
Stormwater Design Manual
Survey Control Points
Taxes
Things To Do
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   - Residents
   - Students
Utilities
Variance Application
Vision Statement
Water Department
Zoning Complaint
Zoning Ordinances

 E-Verify ID # 138972
Date of Authorization 07/24/08

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