Engineering Standards | Denver Water

Complete Engineering Standards (13th edition, effective Sept. 9, 2010)

Table of Contents
Section	Title	Page
1.01	Authority	1
1.02	Effective Date of Standards	1
1.03	Revisions, Amendments or Additions	1
1.04	Denver Water Control	1
1.05	Organization and Interpretation of Standards	1
1.06	Definitions	2
1.07	Abbreviations	8

Table of Contents
Section	Title	Page
2.01	Inside Denver	1
2.02	Outside Denver	1
2.03	Extensions Defined	1
2.04	Engineering Standards to Apply	1
2.05	Application Procedure	1
2.06	Construction Procedure	2
2.07	Plans and Specifications	3
2.08	Engineering	8
2.09	Surveying	9
2.10	Placing Survey Lines	9
2.11	Inspection	10
2.12	Contractors	10
2.13	Points of Delivery	11
2.14	Special Conditions	11
2.15	Exceptions Under Chapter 2	11
2.16	Specimen Sheets Illustrated Procedures	12
2.17	Electronic Plan Submittals	12

Table of Contents
Section	Title	Page
3.01	General	1
3.02	Ownership and Maintenance	1
3.03	Layout	3
3.04	Separate Trenches	5
3.05	Combination Service Lines	6
3.06	Pumps	6
3.07	Tanks	6
3.08	Connections for Water	6
3.09	Taps and Saddles	8
3.10	Size	8
3.11	Pipe Material	9
3.12	Curb Stops, Valves and Valve Boxes	10
3.13	Meters	10
3.14	Automatic Meter Reading (AMR) Equipment	11
3.15	Outside Meter Setting	12
3.16	Inside Meter Setting	12
3.17	Meter Bypass Lines	13
3.18	The Abandonment or Removal of Service Lines and Tap Cuts	14

Table of Contents
Section	Title	Page
4.01	General	1
4.02	Granting an Easement to Denver Water	1
4.03	Granting an Easement to a Distributor	6
4.04	Acquiring an Easement from Denver Water	8
4.05	Obtaining a License to Use or Cross Denver Water Property	12
4.06	Specimen Sheets Illustrating Procedures	14

Table of Contents
Section	Title	Page
5.01	General	1
5.02	Quality of the Distribution System	1
5.03	Sizing of Distribution Mains	1
5.04	Fire Protection Systems	2
5.05	Cross-Connection Control and Backflow Prevention	3
5.06	Operating Pressures within the Distribution System	11
5.07	Pressure Regulating Stations	11
5.08	Storage Facilities	11
5.09	Electric Pump Motors	11
5.10	Pumping Facilities	12
5.11	Layout of the Distribution System	14
5.12	Line Valves	16
5.13	Connections to Conduits	16
5.14	Supervisory Control and Data Acquisition (SCADA)	16
5.15	Interconnects with Other Water Systems	20
5.16	Flow Measurement	21

Chapter 6: Materials

Table of Contents
Section	Title	Page
6.01	Materials and Testing	1
6.02	Size of Mains	1
6.03	Pipe Classes	1
6.04	Selection of Pipe	2
6.05	Pipe Fittings	2
6.06	Line Valves	4
6.07	Pressure Regulating Valves (PRVs)	4
6.08	Tapping Valves and Sleeves	4
6.09	Check Valves	5
6.10	Stop and Waste Valves	5
6.11	Valve Boxes	5
6.12	Valve Reference Marker Posts	5
6.13	Water Meters	5
6.14	Meter Appurtenances	6
6.15	Meter Pits and Lids for ¾-inch and 1-inch Meters	7
6.16	Meter Vaults for Meters 1½-inch and Larger	8
6.17	Concrete Structures	9
6.18	Steel Reinforcement for Concrete	9
6.19	Manholes	9
6.20	Manhole Base Slabs and Base Beams	10
6.21	Sump Pits for Vaults and Manholes	10
6.22	Vent Pipes	11
6.23	Manufacturer and Model of Fire Hydrants	11
6.24	Fireline Connections to Mains	11
6.25	Service Lines	11
6.26	Corporation Stops	11
6.27	Curb Stops	12
6.28	Curb Stop Service Boxes	12
6.29	Corrosion Protection Systems	12
6.30	Kickblocks	12
6.31	Protective Concrete Pads Over Pipe	13
6.32	Casing Pipe	13
6.33	Miscellaneous Metalwork and Piping	13
6.34	Air and Vacuum Valves	14

Chapter 7: Earthwork

Table of Contents
Section	Title	Page
7.01	Earthwork Defined	1
7.02	Exploratory Excavation	1
7.03	Excavation to Line and Grade	1
7.04	Trenching Operations	1
7.05	Excavation for Structures	2
7.06	Surplus Excavation Material	2
7.07	Blasting	2
7.08	Dewatering	3
7.09	Foundations on Unstable Soil	3
7.10	Pipe Bedding and Pipe Zone Material	3
7.11	Backfill and Compaction	4
7.12	Controlled Low Strength Material (CLSM)	5
7.13	Cleanup	7
7.14	Surface Restoration	7
7.15	Subgrade and Road Preparation	7

Table of Contents
Section	Title	Page
8.01	Approval by Denver Water	1
8.02	Handling of Materials	1
8.03	Preparation and Inspection of Pipe and Fittings for Installation	1
8.04	Pipe Joint Lubricant	1
8.05	Cutting and Fitting of Pipe	1
8.06	Pipe Alignment and Grade	2
8.07	Deviation from Alignment and Grade Occasioned by Other Structures	2
8.08	Temporary Bulkheads	2
8.09	Frost	2
8.10	Ductile Iron Pipe	2
8.11	Polyvinyl Chloride Pressure Pipe	3
8.12	Installation of Valves	4
8.13	Installation of Valve Boxes	4
8.14	Installation of Fittings	4
8.15	Installation of Tapping Saddles	4
8.16	Fire Hydrants	5
8.17	Fireline Connections	5
8.18	Kickblocks	6
8.19	Concrete Structures	6
8.20	Reinforcing Steel for Concrete Structures	8
8.21	Joint Restraint Devices	9
8.22	Connections to Denver Water’s System	10
8.23	Corrosion Protection Systems	11
8.24	Chlorination	12
8.25	Hydrostatic Testing	13
8.26	Acceptance and Release for Taps	14
8.27	Blowoff Assembly	14
8.28	Sewer Crossing	14
8.29	Horizontal Directional Drilling	15

Table of Contents
Section	Title	Page
9.01	General	1
9.02	Other Standards to Apply	1
9.03	Design of Transmission Mains	1
9.04	Plans and Specifications	2
9.05	Material	2
9.06	Installation	2
9.07	Sewer Crossings	3
9.08	Easement Width Requirements	3

Table of Contents
Section	Title	Page
10.01	General	1
10.02	Other Standards to Apply	1
10.03	Preliminary Investigation	1
10.04	Design	2
10.05	Plans and Specifications	3
10.06	Materials	4
10.07	Installation	4
10.08	Sewer Crossings	5
10.09	As-Constructed Drawings	5
10.10	Easement Width Requirements	5

Table of Contents
Section	Title	Page
11.01	General	1
11.02	Other Standards to Apply	1
11.03	Water Quality	1
11.04	Potable Water Backup	1
11.05	Conversion from a Potable to a Recycled Line	1
11.06	Protection of the Potable Water System	1
11.07	Discharges from the System	2
11.08	User Permits	2
11.09	Separation from Sewer Lines	2
11.10	Separation from Potable Water Lines	2
11.11	Recycled Water Conduits	2
11.12	Recycled Water Transmission Mains	3
11.13	Recycled Water Distribution Mains	4
11.14	Recycled Water Service Lines and Appurtenances	5
11.15	Recycled Water Customer Guidelines	7
11.16	Dual Supply Systems	7

Table of Contents
Section	Title	Page
12.01	General	1
12.02	Maintenance Programs	1
12.03	Distribution System Sampling	2
12.04	On-Line Water Quality Monitoring	2
12.05	Water Quality Complaints and Communication	2
12.06	Facility Operation and Status	3
12.07	Reporting Compliance	3
12.08	Distribution System Discharges	3

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