PipeTrenchAdjustDiameter

The PipeTrenchAdjustDiameter subassembly with a single pipe in a trench that allows volume calculation of bedding base and granular backfill.

The depth will vary in the section of Granular Backfill; the others will be a constant. All of the depths, widths, and diameters will change from trench to trench. The depth of the trench will vary along the alignment since it is measured from the bottom of the trench to the target surface. The excavation sides will be vertical for depths less than 12' (3.5 m) and sloped at 300% for depths greater than that. The profile will follow the center of the pipe.

Attachment

By default, the attachment point is the center of the pipe.

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
Bottom Width	Bottom Width of the pipe trench	Numeric, positive	3 ft 1 m
Pipe Cover	Depth of the trench from the top of the pipe to the surface	Numeric, positive	0.5 ft 0.15 m
Pipe Diameter	Pipe diameter	Numeric, positive	0.667 ft 0.2 m
Bedding Depth	Depth of the pipe bedding over trench bottom	Numeric, positive	0.166 ft 0.05 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
Daylight Surface	Name of the daylighting surface. The following object types can be used as targets for specifying the surface: surfaces.	Required

Runtime Logical Assignments

None.

Output Parameters

None.

Behavior

The elevation of the bottom of the trench is calculated as the profile grade line elevation minus one half the pipe diameter plus bedding depth. The horizontal trench bottom link is placed symmetrically about the attachment point offset at that elevation. If the depth of the trench is less than 12' (3.5m), the sides of the trench are vertical. Over this depth, the trench has 300% side slopes. In both cases the side slopes are extended upward to the existing surface.

Layout Mode Operation

In layout mode, this subassembly draws a trench.

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	PipeBottom	Bottom of pipe
P2	BeddingBottomCenter	Bottom center of bedding
P3	PipeBackfillBottom_In	Inside pipe bottom of backfill
P4	PipeBeddingBottom_In	Inside pipe bottom of bedding
P6	PipeBeddingBottom, Datum	Pipe bedding bottom
P7	PipeBackfillBottom_Out	Outside pipe bottom of backfill
P9	Hinge, Top
P10	Top
P11	Pipe
P12	PipeTop	Top of pipe
P13	Pipe
P14	PipeCenter	Center of pipe
L1, L5	PipeBackfillBottom	Pipe backfill bottom
L2, L4	PipeBedding	Pipe bedding
L3	PipeBeddingBottom, Datum	Pipe bedding bottom
L6 - L7	Pipe
L8	TrenchSlopeInner	Inner pipe trench slope
L9	TrenchSlopeOuter	Outer pipe trench slope
L10	Top
S1	PipeBedding	Pipe bedding
S2	TrenchMaterial	Trench backfill material