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Layer: Gravity Main (ID: 9)

Name: Gravity Main

Display Field: FACILITYID

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: The feature is a line shapefile that has five subtypes to classify data; collector, inline storage, inverted siphon, overflow and tunnel. A collector is a conventional gravity sewer that is designed to the slope and size of the pipe adequate to maintain flow towards the discharge point without surcharging manholes or pressurizing the pipe. An inline storage refers to a number of practices designed to use the storage within the pipe system to detain flows by reducing peak flows. An Inverted Siphon allows sewage to pass under obstructions such as rivers. Unlike the main sewer pipe, the siphon pipes flow under pressure and must have flow velocities greater than 3 ft/s (0.9 m/s) to keep material suspended and several siphons having smaller diameters than the main sewer may be required. Overflows are extra pipeline that allows relief when there are more sewage than the pipe can handle in normal conditions. A tunnel is an underground passageway that has a pipeline within it.

Definition Expression: N/A

Copyright Text: Baltimore County, Maryland Department of Public Works

Default Visibility: true

MaxRecordCount: 1000

Supported Query Formats: JSON, AMF, geoJSON

Min Scale: 10000

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:
Drawing Info: Advanced Query Capabilities:
HasZ: false

HasM: true

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeNone

Type ID Field: null

Fields:
Supported Operations:   Query   Generate Renderer   Return Updates

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