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Modeling Mechanical Systems

BIM for Architecture, Engineering, and Construction Curriculum

Exercise 4.5.1: Copying Shared Elements into a Mechanical Model

In this exercise, students will learn how to:

  • Copy shared levels and grids into a Revit MEP host project.
  • Create working views for mechanical design in Revit MEP.
Figure 4.5.1 - Applying view templates to customize views for mechanical design

Video Tutorial



Student Exercise

Download Unit4_Lesson5_Exercise1_Start.zip: Imperial or Metric
Revit
  • Create a new customized and filtered 3D view using the section box to assist with coordinating the lighting fixtures and the mechanical equipment to be placed.

 

Figure 4.5.2 - 3D view displaying lighting and HVAC disciplines

Exercise 4.5.2: Modeling Exposed HVAC Systems

In this exercise, students will learn how to:

  • Place air handling units and terminals.
  • Create a return system.
  • View HVAC systems in the System Browser.
Figure 4.5.3 - Connecting diffusers to an air handling unit

Video Tutorial

Student Exercise

Download Unit4_Lesson5_Exercise2_Start.zip: Imperial or Metric
Revit 
  • Place six supply diffusers for an exposed HVAC system in the retail space at the north end of level 1 around the front façade.
  • Create a supply system for the diffusers placed in the previous step:
    • For the main ducts, use oval ducts with gored elbows/tapsand an offset of 13'-0" (3.96 m).
    • For the branch ducts, use round ducts with tees, an offset of 13'-0"(3.96 m), and round flex ductswithmaximum flex duct length of 6'-0"(1.83 m).

 

Figure 4.5.4 -  HVAC supply system in the retail space

Exercise 4.5.3: Modeling Closed Plenum HVAC Systems

In this exercise, students will learn how to:

  • Measure the plenum space available.
  • Place air handling units and terminals.
  • Create a supply system.
Figure 4.5.5 - Using auto-routing to place supply side ducts in closed plenum HVAC system

Video Tutorial

Student Exercise

Download Unit4_Lesson5_Exercise3_Start.zip: Imperial or Metric
Revit
  • Open the model for this exercise in Revit MEP software.
  • Place two supply diffusers for a closed plenum HVAC system in the office space at the northeast corner of level 2.
  • Place a variable air volume (VAV) unit above the corridor outside the office.
  • Create a supply system for the diffusers and VAV unit placed in the previous steps using the Generate Layout tool:
    • For the main ducts, use rectangular ducts with mitered elbows/teeswith an offset: 11'-0" (3.35 m).
    • For the branch ducts, use rectangular ducts with mitered elbows/teeswith an offset: 11'-0" (3.35 m) and no flex duct.
  • Open the 3D HVAC Lighting Coordination view to confirm that there are no conflicts between the HVAC elements and the lighting fixtures.

Figure 4.5.6 -  Duct layout for supply side of closed plenum HVAC system