BasicBenchWithOverExcavation

The BasicBenchWithOverExcavation subassembly inserts links to create cut or fill catch slopes with repeating benches as needed.

You specify a max daylight height and if the vertical distance between the insertion point and the target surface is higher than the specified max daylight height, then benching occurs using specified bench height, slope, grade, and width; this operation repeats itself until the target surface is found.

Once the target surface is found, an over excavation width is applied at the top where the daylight link meets the target surface. If the vertical distance between the insertion point and the target surface is lower than the max daylight height, then there is no benching and a daylight link is placed.

If the target surface is not found after the operation was repeated a specified number of times, the subassembly will finish using a daylight link until it reaches the target surface.

Attachment

The attachment point is at the inside edge of the initial cut or fill slope. This component can be attached to either the left or right side.

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
Side	Specifies which side to place the subassembly.	Left / Right	Right
Max Daylight Height	The maximum allowable height for the cut and fill daylight link without benching.	Numeric	15.0 ft 4.5 m
Bench Height	The maximum allowable height for a bench before a new bench.	Numeric	10.0 ft 3.0 m
Bench Slope	The slope between benches.	Numeric, positive	1 (: 1)
Bench Grade In	The +/- % slope of the bench. Positive slopes are upward in the direction of increasing offset.	Numeric	4 (%)
Bench Width In	The width of the bench to the bench flowline.	Numeric, positive	4 ft 1.2 m
Bench Grade Out	The +/- % slope of the bench. Positive slopes are upward in the direction of increasing offset.	Numeric	4 (%)
Bench Width Out	The width of the bench from the bench flowline.	Numeric	4 ft 1.2 m
Daylight Slope	The daylight slope.	Numeric, positive	2 (: 1)
OverExcavation Width Top	The width of the overexcavation from the daylight.	Numeric, positive	5 ft 1.5 m
OverExcavation Width Bottom	The width of the overexcavation from the hinge point.	Numeric, positive	10 ft 3 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 initial hinge point is set at the attachment point. The hinge point elevation is checked against the target surface to determine if the section is in the cut or fill condition. An intercept is calculated to the target surface using the given Cut Slope or Fill Slope. If the height to the intercept exceeds the Max Height, the link with the Max Daylight Height is inserted, and the bench link is added. The hinge point is reset to the outside edge of the bench and the process is repeated until a daylight link is found that does not exceed the Max Daylight Height.

Once the target surface is found, an over excavation width is applied at the top where the daylight link meets the target surface. A vertical link is drawn from the over excavation point to the initial hinge point and a shape is then created.

This subassembly contains a loop definition comprised of L2, L3, and L4 that is repeated until it reaches the surface target or until it is repeated a maximum of 10 times.

Layout Mode Operation

In layout mode, this subassembly draws the initial fill slope to 5 units.

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	Top, Datum
P2, P3, P5, P6	Top
P4	Top, FL	Flowline of the bench.
P7	Top, Wall	Back edge of over excavation width at the top of the daylight link.
P8, P9, P10	Datum
L1 - L6	Top
L7 - L9	Datum