Overburden

Subassembly models benching and slope requirements for sections in rock cut. Used in area between a Rock Surface and the existing ground, which is typically called the Earth Overburden (based on WisDOT FDM Procedure 11-15-1)

Models the surfaces in the area between the rock and existing ground surface, commonly referred to as the Earth Overburden.

Measurement is made from the attachment point to the daylight surface to determine if the depth of the Earth Overburden is greater than a distance that requires the insertion of a bench. If the depth of the Earth Overburden equals or exceeds this amount, a bench is inserted into the section before the final slope. The bench link follows along the bench surface for a distance of width of Width of Bench input or an optional alignment. The daylight link is then inserted from the end of the bench to the daylight surface, using max height and slope requirements as defined by the user. Measurement is made from the end point of the bench link to the daylight surface to determine if steep or flat slope rates are used. If Maximum Height for Slope is exceeded then the Steep RateSlope is used for the daylight link, otherwise the Flat Rate Slope is used.

When no bench is inserted, the daylight link is inserted from the attachment point.

The attachment is at the inside edge of the first link, usually located at the daylight point with a rock surface.

In layout mode, this subassembly displays a single link at the Flat Rate Slope for a distance of 10 feet.

Info: All dimensions are in 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.

This section lists the parameters in this subassembly that can be mapped to one or more target objects, such as a surface, alignment, or profile object in a drawing.

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