Level of Detail Tiers

Our Level of Development framework is used as a measure of the service level required. On Trimble VDC Services projects, we offer five LOD options ranging from 200 to 500. Our recommended standard LOD is level 350 which offers the best balance between 3D accuracy, estimating accuracy and time investment.

LOD 200

Model with approximate quantities, size, shape, location, and orientation.

  • Ducts/Gravity pipe/Pressure pipes/FP Pipes: Risers and primary horizontal runs modeled with the same material.
  • All fittings modeled with the default object.
  • Primary equipment is modeled as a box with generic  enveloping geometry.

LOD 300

Model contains system quantity, size, shape, location, and orientation detail.

  • Ducts/Gravity pipes/Pressure pipes: All runs with  diameter of 2″ and above are modeled.
  • All fittings modeled with the best matching fitting  available in the Vico MEP Virtual Warehouse
  • Rigid conduits: All runs with a diameter of 3″ or larger  are modeled

LOD 350

Model contains system quantity, size, shape, location, and orientation detail and interfaces with other building systems.

  • Ducts: flanges are modeled
  • Straight runs are modeled in segments per shop drawing piece length information
  • Ducts/Gravity pipes/pressure pipes: All runs with a  diameter of 3/4″ or larger are modeled
  • FP pipes: Runs of all sizes modeled
  • Flex connections to fixtures are modeled

LOD 400

Model contains system quantity, size, shape, location, and orientation detail with detailing, fabrication, assembly, and installation information.

  • Ducts: Straight runs modeled in segments per shop  drawing piece length information
  • Pressure pipes: Runs of all sizes modeled
  • All fittings modeled with the best matching fitting  available in the Vico MEP Virtual Warehouse
  • Flexible conduits are modeled.
  • Primary fixtures are Modeled with exact geometry per  submittal information
  • Instrumentation and controls: Modeled with detailed  geometry to represent the outer limits of the fixture

LOD 500

Model contains system quantity, size, shape, location, and orientation detail with detailing, fabrication, assembly, and installation information…And includes secondary objects.

  • Ducts: Straight runs modeled in segments per  shop drawing piece length information
  • Pressure pipes: Runs of all sizes modeled
  • All fittings modeled with the best matching fitting  available in the Vico MEP Virtual Warehouse
  • Flexible conduits are modeled.
  • Primary fixtures are Modeled with exact geometry  per submittal information
  • Instrumentation and controls: Modeled with  detailed geometry to represent the outer limits of  the fixture
  • Secondary fixtures are modeled with  exact geometry.
  • All available pipe, duct and electrical connection  points of secondary fixtures and controls are  defined per submittals