CE 3372 Water Systems DesignLecture 005: Engineering Drawings

Outline

ES2 Solution(s)

Engineering DrawingsWater Distribution

Sewer Collection

Storm Sewer Collection

Intro to EPANET

ES2 Minimum Pressure

ES2 Minimum Distance

ES2 Minimum Disinfection

ES2 Wastewater

ES2 Wastewater

ES2 Wastewater

ES2 COH Manual

ES2 Head Loss

ES2 Head Loss

ES2 Head Loss

ES2 Pipeline

ES2 Pipeline

ES2 Pipeline

ES2 Pipeline

ES2 Pipeline

ES2 Pipeline

ES2 Pipeline

ES2 Pipeline

Engineering Plans

Water System Plans are communicated in drawings as well as reports

The general notes and detail notes are important parts of the drawings

Water Distribution

Examine the water line plan and profile

WaterLinePlanProfile.PDF

Sanitary Sewer Collection

Examine the sanitary sewer plan and profile

SanitarySewerPlanProfile.PDF

Stormwater Collection

Examine the storm water plan and profile

StormSewerPlanProfile.PDF

Introduction to EPANET

Introduction to EPANET Install on (PC/Mac)

Example problem (from ES2) on EPANET

System ComponentsWater source (Main Supply)• Lake• River• Aquifer

Treatment Facility• Treats and disinfects water• Meet water quality standards

• Potable water

Transmission Lines• Convey water from

source – treatment facility facility – network

Pumping Facilities• Provide energy to move water

Intermediate Storage Facilities• Stabilize line pressures• Reserve for peak demand periods

• Provide storage for fire flow req.

Distribution Lines• Convey water from

storage – service areas

• Looped(grid) and Branched Layouts

Appurtenances• Fire Hydrants. Valves, auxiliary pumps, fittings

Network Representation

Distribution network - Consists of items designed to convey potable water at adequate pressures and discharges

Tanks

Pumps

Pipes

Valves

Fittings

Meters

Other appurtenences

EPA-NET

Computer program that simulates flow in closed conduit (pressurized) systems

NodesLinks (pipes, pumps, valves)Reservoirs (reservoir, tanks)Demand schedule (extended period simulation)

Getting the Program

Download and install EPA-NETPC Users – Google EPANET

MAC Users – Use the class website

Download and PRINT the user manualTopology constructed in a GUI

Lengths, diameters, friction terms entered for each component (pipe, valve)

Demand entered for each node (+ outflow, - inflow)

Getting the Documentation

Download and PRINT the user manualEPANET website, or class website.

Topology constructed in a GUI

Lengths, diameters, friction terms entered for each component (pipe, valve)

Demand entered for each node (+ outflow, - inflow)

About the program

Topology (Network Layout) is constructed in a GUI

Nodes

Demand entered for each node (+ outflow, - inflow)

Links

Lengths, diameters, friction terms entered for each component.

Pipes, Pumps, Valves are all “link” components

Reservoir/TankAll models need a reservoir (like the ground in an electric circuit)

Stuff you Have to Choose

Head Loss ModelsDarcy-WeisbachHazen-WilliamsChezy-Mannings

Flow units (CFS, GPM, CMS and such)Select SI or US Customary before building a modelThe program does not convert units.

EPANET Example

Use a 2-reservoir problem as first example

Next Time

Examine the EPANET User Manual

EPANET WorkshopExample 2 – Three reservoir (branched)

Example 3 – Two reservoir, 4 pipes (loop)

Example 4 – Lifting with a pump