• Revit

Conceptual to detailed mechanical layouts

Convert duct and pipe placeholder layouts.

Type:

Tutorial

Length:

6 min.

Tutorial resources

These downloadable resources will be used to complete this tutorial:

ModelSysDsgn_RVT.2-02_2024.zip

Step-by-step guide

Convert duct and pipe placeholder layouts.

  1. Open the project M02_02.rvt.
  2. Ensure that the current view is HVAC > Floor Plans > 1 – Mech.
  3. Use TAB to chain-select the supply air duct network.
  4. In the Properties palette, Type Selector, change the duct type to Round Duct Tees.
  5. Set the Diameter to 8".
  • In the floor plan for this example, the supply air network is selected, and in Properties, the selected duct type and the changed Diameter are highlighted in red.
  1. With the network still selected, from the contextual ribbon tab, select Convert Placeholder.
  • On the ribbon, Modify | Duct Placeholders contextual tab, Convert Placeholder is being selected.

Use the regular editing tools to make the necessary adjustments:

  1. Remove the excess duct from the right end.
  2. Convert the cross fitting to a tee.
  • In a zoomed-in view of the floor plan showing the area of interest, the excess duct has been removed from the right end, and the cross fitting has been converted to a tee.
  1. From the ribbon, Modify tab, click the Split Element tool.
  2. Click to create a split in the duct just after each take-off along the main run, creating three splits in total.
  • A zoomed-in view of the ducts, with the Split Element tool being used to create a split in the duct.
  1. Select the duct at the riser end, including the section past the first branch, and set the diameter to 14".
  • A view of the duct at the riser end, which is highlighted, with the diameter set to 14".
  1. Select the next section as shown, including the section past the second branch, and set the diameter to 12".
  • A zoomed-out view of the second section of duct, which is highlighted, with the diameter set to 12".
  1. Select the next section as shown, including the section past the third branch, and set the diameter to 10".
  • A view of the third section of duct, which is highlighted, with the diameter set to 10".
  1. Select any section of duct and set the elevation for the entire network to 9' 4".
  2. Use TAB to chain-select the chilled water flow (supply) piping network and ensure that the Type Selector is set to Carbon Steel Screwed/Flanged Coupling.
  3. With the network still selected, on the contextual ribbon tab, click Convert Placeholder.

Again, use the regular editing tools to make adjustments:

  1. Remove the excess pipe from the right end.
  2. Convert the tee fitting to an elbow.
  • The excess pipe has been removed from the right end, and the tee fitting converted to an elbow.
  1. Select any section of pipe and set the elevation for the entire network to 8' 10".
  2. Use TAB to chain-select the chilled water flow (supply) piping network and set the diameter to 1-1/4".
  • A view of the edited pipe network selected, with the elevation set for this example.
  1. Follow the same procedure to convert the chiller water return piping network, using the same pipe type, and setting the elevation to 9' 9".
  • The chiller water return piping network selected, with the pipe type converted to match the supply network.
  1. Reposition the chilled water flow (supply) and return pipes as shown.
  • The repositioned chilled water flow (supply) and return pipes, which no longer overlap.
  1. Connect the chilled water flow (supply) and return pipes to the fan coil unit.
  • The chilled water flow (supply) and return pipes connected to the fan coil unit.
  1. From the ribbon, Systems tab, Plumbing & Piping panel, click Pipe Accessory.
  2. Use the Type Selector to add 2" ball valves as shown.
  • The chilled water flow (supply) and return pipes with added ball valves.
  1. Complete the detailed layout by adding pipe and duct accessories as required.
  • The completed detailed layout, with added accessories.
  1. Save the project.

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