Excavation Category (Excavation)

The excavation category contains the properties related to the excavation of the trench necessary for installing the device.

• All Devices
  • Calculate Excavation (CalcExcavation, Boolean) indicates whether the device is enabled to calculate excavation
    Note: Not every device has to calculate excavation. Non-destructive pipes or existing devices, for example
  • Excavation Surface (ExcavationSurf, ObjectID) - Surface used to calculate the excavation of the device
    Note: the excavation surface does not necessarily need to be the same as the reference surface, as in certain situations, the excavation of the device trench takes place in the natural terrain, prior to earthmoving the finished surface. In this case, the landfill above the land quota is paid in the earthwork service of the stretch itself and not in the excavation of the ditch
  • Calculate Refill (CalcRefill, Boolean) indicates whether the device is enabled to calculate backfill
    Note: Not every device has to calculate backfill. Ditches in grass, for example. Calculates only the excavation
  • Base Height (BaseHeight, Double) - height needed to build the berth in thin concrete, gravel or just leveling the bottom of the trench
  • Bench Width (BenchWidth, Double) - in deep trenches, trench cutting should be done using benches to prevent slipping
  • Bench Height (BenchHeight, Double) - height of the bench or greater height of the trench where the bench is dispensed
  • Trench Width (TrenchWidth, Double) - total width of the excavation trench, measured perpendicular to the axis
  • Trench Height (TrenchHeight, Double) - height between insertion point and top of cradle, used to calculate total trench height ditch in each picket
  • Trench Slope (TrenchSlope, Double) - trench slope angle
  • Trench Volume (TrenchVolume, Double) - Total solid volume of the excavated trench
    In linear/longitudinal devices, it is used to calculate the ratio between the excavated volume calculated by the section method and the calculated value in the trench solid
    This ratio is used to correct the device digging values
• Longitudinal devices
  • Distance on Arcs (SectionArcDistance, Double) - Distance between sections on arched sections
    In longitudinal devices, when the vertices are rounded, the distance between earthwork sections can be reduced, producing a better result
• Linear and longitudinal devices:
  
  
  • Distance between Sections (SectionDistance, Double) - to quantify excavation volumes in linear devices, A sampled trench section is evaluated at each distance interval.
    This is the adopted value. Think of it as modeling a civil 3D corridor for pipes, you could consider something like 5 meters
  • Displace Ditch (DisplaceDitch, Double) - Displaces the axis of the ditch relative to the axis of the device
    Positive values shift right and negative values shift left
  • Variation (Variation, Double) - Variation in the volume of the trench given by the ratio between the absolute volume and the volume obtained by the method of sections
    Variation = TrenchVolume / (Emec + Eman)
  • Manual excavation (EMan, Double) - excavation area of the berth, normally considered as regularization of the bottom of the trench (area marked in green):
    EMAN = (dx + TrenchWidth) * BaseHeight
    dx = BaseHeight / fac
    fac = Math.Tan(TrenchSlope)
  • Mechanical Excavation (EMec, Double) - area that of the excavation portion to the bottom of the device, that is, before the leveling of the bottom of the trench (area marked in yellow):
    ETOTAL = EMEC + EMAN
    Where "ETOTAL" is the total excavated area of the section.
    
  • Manual Covering (RMan, Double) - area of the section needed to "bury" the device (orange area in the figure below). It is called manual, because in general the compaction is done with a manual compactor or a smaller one.
    RTOTAL = OutHeight * (2 * dx + TrenchWidth + dy)
    dy = (BaseHeight + OutHeight) / fac
    RMAN = RTOTAL - OutArea
  • Mechanical Covering (RMec, Double) - volume required to close the trench after manual covering
    RMEC = EMEC - RTOTAL
    
    
  • Shoring (Shoring, Double) - shoring area needed to build the trench
• Point Devices
  
  
  • Trench Length (TrenchLength, Double) - length of the trench in the largest plan dimension of the device
  • Number of divisions (DivCount, Integer) - for the purpose of modeling the trench solid, it is necessary to model sections at the vertices
  • External Volume (SolidVolume, Double) - to calculate the backfill, it is necessary to calculate the external volume of the solid.
    This is a mandatory property of the point devices that implement the excavation and must be calculated by the Constructor
  • Manual Excavation (EMan, Double) - corresponds to the excavation volume of the cradle regularization (calculated by the pyramid trunk volume equation):
    EMan = (BaseHeight / 3) * (areaInf + areaSup + (areaInf + areaSup)^0.5)
    areaInf = TrenchLength * TrenchWidth
    areaSup = (TrenchLength + 2 * dx) * (TrenchWidth + 2 * dx)
    dx = BaseHeight / Math.Tan(TrenchSlope)
  • Mechanical Excavation (EMec, Double) - corresponds to the excavation portion up to the elevation of the bottom of the device, that is, before the regularization of the bottom of the trench (area marked in yellow):
    EMEC = SolidoVala.Volume - EMAN
  • Manual Coating (RMan, Double) - volume necessary to "bury" the device up to its top elevation. It is called manual, because in general the compaction is done with a manual compactor or smaller dimension. as the program models a solid for the trench, the volume is calculated as follows:
    RecTrench is the trench solid cut in a plane with z = Location.Z
    Trench is the total solid of the trench
    RMan = RecTrench.Volume - SolidVolume - EMan
    Where SolidVolume is the external volume of the device considering its coverage
  • Mechanical Covering (RMec, Double) - volume required to close the trench after manual covering
    RMec = Trench.Volume - RecTrench.Volume
  • Excavation Surface Elevation (ExcavationSurfaceElevation, Double) - Excavation Surface Elevation
  • Excavation Height (ExcavationHeight, Double) - Total height of the trench to be excavated
    ExcavationHeight = ExcavationSurfaceElevation - (Location.Z - (TrenchHeight + BaseHeight)
  • Shoring Height (ShoringHeight, Double) - Calculated height of the shoring
    ShoringHeight = Function(TrenchSlope, BenchHeight, MinShoring)
  • Shoring (Shoring, Double) - shoring area needed to build the trench
    Shoring = ShoringHeight * (TrenchLength * 2 + TrenchWidth * 2)
• Connected Devices
  • Connection Excavation Elevation (ConnectionExcavationElevation, Double) - Elevation on the excavation surface at the connection point

See the topic Toolspace / Settings / Options / Excavation for more information

It should be noted that the excavation calculations are not exact, as there are inaccuracies in the digital surface model and also considerations on how to calculate the external volume (SolidVolume) of point devices. For these, it is necessary to observe how high the available asset is effectively buried. If the parameter Superelevation (SurfAj) be positive and of considerable value, as it would be in the case of manholes in Sewage Networks, where the cover is about 1 meter above the surface in rural areas.