City of Richmond. Engineering Design Specifications

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Brittany Riley
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1 City of Richmond Design Specifications June 2008

2 CITY OF RICHMOND ENGINEERING DESIGN SPECIFICATIONS JUNE 2008 THIS DOCUMENT DETAILS THE MINIMUM STANDARDS TO BE USED FOR THE DESIGN OF ENGINEERING PROJECTS AND SHOULD BE USED IN CONJUNCTION WITH BYLAW NO TO REGULATE THE PROVISION OF WORKS AND SERVICES UPON SUBDIVISION OF LAND.

3 I AMENDMENT REGISTER Amendment Date Amended Amended Description of Amendment No. Section 1 June 21, 2011 Section , 9.2, 9.3 Added Section June 21, 2011 Section I VII, VIII Added reference to Section Nov 18, 2014 Section , 9.3 Revised Section 9.5 and drawing WC-1-DS

4 II TABLE OF CONTENTS 1.0 GENERAL REQUIREMENTS GENERAL APPROVAL OF SERVICES SUBDIVISION AND DEVELOPMENT SERVICING PROCEDURES GENERAL MANAGER OF ENGINEERING AND PUBLIC WORKS DRAFTING REQUIREMENTS RIGHTS OF WAY AND EASEMENTS REVISIONS TO THE DESIGN SPECIFICATIONS GLOSSARY OF TERMS FIELD SURVEY REQUIREMENTS GENERAL MINIMUM SURVEY REQUIREMENTS UNCOVERING OF EXISTING UNDERGROUND UTILITIES SURVEY CONTROL AS-CONSTRUCTED SURVEY STORM DRAINAGE GENERAL Stormwater Management Plan Design Frequency Sediment Control and Sediment Control Plan RUNOFF ANALYSIS RATIONAL METHOD Runoff Coefficients Time of Concentration Rainfall Intensity Presentation of Rational Calculations RUNOFF HYDROGRAPH METHOD Selection of Modeling Program Catchment Parameters Storm Events Presentation of Modeling Results HYDRAULICS Pipe and Channel Capacity Hydraulic Grade Line (HGL) & Minimum Building Elevation (MBE) MINIMUM VELOCITY...3-8

5 III 3.7 MINIMUM PIPE SIZES MINIMUM GRADES LOCATION SEPARATION Horizontal Separation Vertical Separation MINIMUM DEPTH OF COVER PIPE JOINTS CURVILINEAR SEWERS MANHOLES Location Hydraulic Details Other Requirements CATCH BASINS (C.B.) SERVICE CONNECTION/INSPECTION CHAMBERS Service Connections Inspection Chambers (I.C.) LANE DRAINAGE INLET AND OUTLET STRUCTURE RUNOFF QUALITY CONTROL TREATMENT FACILITIES SANITARY SEWERS GENERAL SEWAGE CHARACTERISTICS SEWAGE FLOWS HYDRAULICS Downstream System Capacity Design Flow Pipe Flow MINIMUM VELOCITY MINIMUM PIPE SIZES MINIMUM GRADE LOCATION SEPARATION Horizontal Separation Vertical Separation MINIMUM DEPTH OF COVER CURVILINEAR SEWERS MANHOLES Location Hydraulic Details Other Requirements...4-6

6 IV 4.13 SERVICE CONNECTION/INSPECTION CHAMBERS Service Connections Inspection Chambers (I.C.) PUMPING STATIONS FORCE MAINS WATER DISTRIBUTION GENERAL DEMANDS Consumption Demand Fire Flow Demand HYDRAULICS Design Flow Water Pressure Analysis Hydraulic Design VELOCITY AND HEADLOSS MINIMUM PIPE SIZES MINIMUM GRADE DEFLECTION LOCATION SEPARATION Horizontal Separation Vertical Separation MINIMUM DEPTH OF COVER CROSSINGS THRUST RESTRAINT VALVES Isolation Valves Air Valves HYDRANTS Locations Other Requirements FLUSHOUTS/BLOW-OFFS SERVICE CONNECTIONS Location Size Cover Connection to Main Water Meters Backflow Prevention...5-9

7 V 5.17 DEAD ENDS Street Ends Cul-de-sacs PRV AND PUMP STATIONS CORROSION PROTECTION CONNECTION TO EXISTING MAINS ROADWAY LIGHTING GENERAL CODES, RULES, STANDARDS AND PERMITS Codes Rules Standards Permits DESIGN CRITERIA LIGHT SOURCE LIGHT LOSS FACTORS (LLF) PAVEMENT SURFACE CLASSIFICATION INTERSECTION LIGHTING SPECIAL CONSIDERATIONS CALCULATIONS Lighting Programs Electrical Design Data Submission POLES Type Locations Offsets LUMINAIRES POWER SUPPLY AND DISTRIBUTION UNDERGROUND CONDUITS COMMUNICATIONS CONDUITS ROADWORKS GENERAL ROAD CLASSIFICATION ROAD CROSS SECTIONS NEW ROADS TIE INTO EXISTING ROAD CUL-DE-SACS LOOP ROADS...7-5

8 VI 7.8 LANES CURB/GUTTER Medians GEOMETRIC DESIGN REQUIREMENTS Design Speeds Design Gradients Cross Slopes and Superelevation Vertical Curves Horizontal Curves INTERSECTIONS General Major Intersections Intersections at Major Arterial Roads Curb Returns Corner Cuts RAILWAY CROSSINGS DRIVEWAYS Two-way Driveways One-way Driveways PEDESTRIANS AND DISABLED ACCESS Wheelchair Ramps Sidewalks Walkways TRAFFIC CALMING BICYCLES TRANSIT PAVEMENT STRUCTURE DESIGN REQUIREMENTS Existing Pavement Asphalt-Concrete Pavement UTILITY RELOCATIONS ROAD EMBANKMENT GRADING POSTAL BOXES TRAFFIC SIGNALS TRAFFIC SIGNS AND STREET MARKINGS TRANSPORTATION IMPACT STUDY General Requirements Data Requirements Transportation Analysis

9 VII 8.0 STREET TREE AND BOULEVARD PLANTING GENERAL Approval DESIGN CRITERIA Landscaping Medians and Boulevards Street Tree Spacing Minimum Tree Planting Clearances Grating Requirements Tree Root Barriers Tree Support Growing Medium Irrigation Drawings REFERENCES WATERCOURSE CROSSING GENERAL DRAFTING REQUIREMENTS MINIMUM SURVEY REQUIREMENTS BRIDGE CULVERT List of Tables Table 1.1 Governing Authorities Table 3.1 Runoff Coefficients Table 3.2 Minimum Inlet Times Table 3.3 Storm Sewer Design - Rational Method Table 3.4 Common Impervious Fractions Table 4.1 Sewage Flows Table 4.2 Equivalent Population Factors Table 4.3 Sanitary Sewer Design Sheet Table 5.1 Fire Flows Table 6.1 Illuminance Design Criteria Table 6.2 Acceptable Pole Arreangements Table 7.1 Road Cross Section Requirements Table 7.2 Curb Return Radii Table 7.3 Driveway Crossing Types and Widths Table 7.4 Pavement, Gravel and Sand Thickness Table 8.1 Grating Requirements...8-2

10 VIII List of Figures Figure 3.1 Short Duration Rainfall Intensity-Duration-Frequency (IDF) Curves Figure Year 2-hour Site Level Storm Figure Year 24-Hour Planning Level Storm List of Drawings R-1-DS Typical Cross Section: Arterial Road R-2-DS Typical Cross Section: Collector Road - Residential R-3-DS Typical Cross Section: Local/Collector Road - Industrial/Commercial R-5-DS Typical Cross Section: Local Road - Residential (Multi-family) R-5-DS Typical Cross Section: Local Road - Residential (Single-family) R-6-DS Typical Cross Section: Lane - Outside City Centre R-7-DS Typical Cross Section: Lane - City Centre R-8-DS Typical Cross Section: Walkway R-9-DS Driveway Guidelines WC-1-DS Watercourse Crossing Detail Drawing...9-3

NAPA COUNTY PUBLIC WORKS Standards & Specifications

NAPA COUNTY PUBLIC WORKS Standards & Specifications Roadway Design & Construction Manual (Table of Contents) 1. Chapter 1: General Provisions 1.1 Short Title 1.2 Jurisdiction 1.3 Purpose and Effect 1.4 Enactment Authority 1.5 Amendment and Revisions 1.6