How to Draw a Dam

The Dam subassembly inserts links to create a representation of a dam. A progress profile is present to adjust the dam geometry to reflect the progress.

Attachment

The attachment point is at the center of the dam.

Input Parameters

Note: All dimensions are in meters or feet unless otherwise noted. All slopes are in run-over-rise form (for example, 4 : 1) unless indicated as a percent slope with a "%" sign.

Parameter	Description	Type	Default
Outer Water Slope	Outer slope of dam facing the impounded water	Slope	2 ( : 1)
Outer Air Slope	Outer slope facing away from impounded water	Slope	2 ( : 1)
Core Water Slope	Core slope of dam facing the impounded water	Slope	0.2 ( : 1)
Core Air Slope	Core slope facing away from impounded water	Slope	0.2 ( : 1)
Core Crest Thickness	Thickness of Core at top of dam	Numeric, positive	1.5 ft 0.45 m
Core Crest Water Width	Width measured from the control point to the side facing the water	Numeric	2 ft 0.6 m
Core Crest Air Width	Width measured from the control point to the side facing the air	Numeric	4 ft 1.2 m
Transition Material Width Air	Width of the transition material between the Rockfill and core facing opposite the impounded water	Numeric, positive	2 ft 1.2 m
Transition Material Width Water	Width of the transition material between the Rockfill and core facing the impounded water	Numeric, positive	2 ft 1.2 m
Filter Material Width Water	Width of Filter Material facing the impounded water	Numeric, positive	2 ft 1.2 m
Filter Material Width Air	Width of Filter Material facing opposite the impounded water	Numeric, positive	2 ft 1.2 m
Liner Material Offset	Distance the liner should be offset from the finish grade to show in sections	Numeric, positive	0.25 ft 0.1 m
Top Water Width	Width of the top of the dam measured from the reference point to the water impoundment	Numeric, positive	7.5 ft 2.2 m
Top Air Width	Width of the top of the dam measured from the reference point opposite the water impoundment	Numeric, positive	7.5 ft 2.2 m

Target Parameters

This section lists the parameters in this subassembly that can be mapped to one or more target objects. For more information, see To Specify Corridor Targets.

Parameter	Description	Status
Dam Daylight Surface	Name of the daylighting surface. The following object types can be used as targets for specifying the surface: surfaces.	Required
Progress Profile	May be used to show progress of the dam based on the elevation of the elevation target. The following object types can be used as targets for specifying the elevation: profiles, 3D polylines, feature lines, or survey figures.	Optional

Runtime Logical Assignments

None.

Behavior

The initial point is set at the attachment point. The outside daylight links are built. The interior structure of the dam is built based on the input parameters. The bottom surface of the dam is based on the Dam Daylight Surface.

If the progress profile is present then shapes are calculated based on the progress elevation. The elevation is applied as a level surface.

Layout Mode Operation

In layout mode, this subassembly displays the dam based on the input parameters given with a height of 20 ft (6 m).

Point, Link, and Shape Codes

The following table lists the point, link, and shape codes for this subassembly that have codes assigned to them. Point, link, or shape codes for this subassembly that do not have codes assigned are not included in this table.

Point, Link, or Shape	Code	Description
P1	TopCenter	Top center of the dam
P2	TopRight	Top right of the dam
P3-P12	Dam	Dam
P13	TopLeft	Top left of the dam
L4-L10	Datum
S1	Rockfill
S2	TransitionMaterial
S3, S5	FilterMaterial
S4	Core
S6	Rockfill

Coding Diagram

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Source: https://knowledge.autodesk.com/support/civil-3d/learn-explore/caas/CloudHelp/cloudhelp/2019/ENU/Civil3D-Subassembly-Ref/files/GUID-761BFB8D-BD91-4A49-9BB4-C34AA5202C3E-htm.html

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