Knowledge Base Revit
Calculating Networks
Learn how to calculate pipe and duct networks.
About the Air Duct Network Calculation
Explains the concept of air duct network calculation.
Settings
Explains the concept of Settings in the Pipe and Air Duct Network Calculations.
General Setting
Explains the concept for general settings regarding the air duct network calculation.
Setting Limit Values for Switching Between Round and Rectangular Ducts
Shows step-by-step how to set limit values for switching between round and rectangular ducts during dimensioning.

New Features
Learn about new features in LINEAR software.
System Requirements
Learn more about the system requirements for using the LINEAR solutions.
Supported Norms and Standards
Learn which norms and standards support the LINEAR Solutions modules.
LINEAR Installation and Administration
Learn how to install, your LINEAR software, license and keep it up to date.
Getting Started
Get basic information about the structure, function, and interaction of the LINEAR Solutions programs in Revit and LINEAR Building.
Preparing Building
Learn how architects prepare plans and models to create a building model for building analysis.
Pre-conception design
Learn how to plan the positionining and dimensioning of technical control centers and create the route concept in collaboration with all parties involved in the planning.
Analyzing Buildings
Get information about the requirements analysis of a building. The demand analysis includes the calculation of the heat load, the cooling load and the ventilation concept.
Dimensioning Components
Learn how radiators, convectors, panel heating/cooling systems and concrete core activation systems and components of ventilation systems are designed based on the requirement analysis in LINEAR Building.
Inserting Components
Learn how to insert components from the LINEAR CAD Browser, from the libraries and configurators of the Library tab or from LINEAR Building into a model.
Constructing Networks
Learn how to create pipe and duct networks, design slots and openings and manage discipline-related reports and tasks.
Calculating Networks
Learn how to calculate pipe and duct networks.
- Requirements for a Calculable Pipe- and Duct Network
  Explains the requirements for a calculable pipe and duct network.
- About Virtual Components
  Explains the concept of virtual components in pipe and duct network calculations.
- About Pipe Network Calculation Heating and Cooling
  Explains the concept of the pipe network calculation for heating and cooling.
- About Pipe Network Calculation Potable Water
  Explains the concept of pipe network calculation in potable water.
- About Pipe Network Calculation for Waste Water
  Explains the concept of pipe network calculation in waste water.
- About Pipe Network Calculation for Gas
  Explains the concept of pipe network calculation gas.
- About the Air Duct Network Calculation
  Explains the concept of air duct network calculation.
  - Settings
    Explains the concept of Settings in the Pipe and Air Duct Network Calculations.
    - General Setting
      Explains the concept for general settings regarding the air duct network calculation.
      - Making General Settings
        Shows step-by-step how to set general settings for the calculation.
      - Setting System types for Network Detection
        Shows step-by-step how to select system types that should be considered in the detection.
      - Detecting a Partial Pipe Network
        Shows step-by-step how to limit the detection of components for calculation to partial networks.
      - Setting Limit Values for Switching Between Round and Rectangular Ducts
        Shows step-by-step how to set limit values for switching between round and rectangular ducts during dimensioning.
      - Medium
        Explains the concept Medium in Pipe and Air Duct Network Calculations for heating, cooling and ventilation.
      - Details on Settings Ventilation
        Information about the Settings dialog in the pipe network calculation ventilation.
    - Material Data
      Explains the concept of the material data in the duct network calculation (ventilation).
    - Rooms
      Explains the concept of Rooms in duct network calculation.
    - Components
      Explains the concept of the Components section in Pipe and Air Duct Network Calculations.
  - Calculation
    Explains the concept of the calculation dialog in Pipe and Air Duct Network Calculations.
  - About the Calculation of Air Duct Networks with MEP-Fabrication Parts
    Explains the concept of calculating air duct networks that contain MEP fabrication parts.
- About Delete Warnings
  Explains the concept of Deleting warnings in Pipe and Air Duct Network Calculations.
Creating a Scheme
Get information on the workflow Scheme for the discipline Potable Water in Revit.
Construction Design
Get information about the workflow Construction design in connection with pipe and duct networks.
Labeling
Learn how to label section parts and components in the model.
Output
Obtain information on the output of calculation results and material extracts in your CAD program in LINEAR Building. In addition, find out how you can customize the layout of the output documents using the print mask editor.
Troubleshooting
Get information about possible sources of errors when working with LINEAR Solutions.

Setting Limit Values for Switching Between Round and Rectangular Ducts

Shows step-by-step how to set limit values for switching between round and rectangular ducts during dimensioning.

Before you begin

You want to change the duct geometry automatically in the dimensioning from certain limit values.

Navigate to:

Project tab ➤ Disciplines … ➤ Ventilation ➤ Analyse tab ➤ Settings

Applies to: Ventilation.

Procedure

Open the section Duct dimensions with a click.
Activate the Use oval duct option if oval ducts are also to be used in the dimensioning.
In the drop-down lists, define the limit value from which the dimensioning is to switch to oval or rectangular channel.

Results

The limit values are set and are taken into account in the calculation. If the Adjust nominal diameters command is used in the calculation dialog, the pipes are generated on the bases of default values.

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Setting Limit Values for Switching Between Round and Rectangular Ducts

Before you begin

Navigate to:

Procedure

Results