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.
Calculation
Explains the concept of the calculation dialog in Pipe and Air Duct Network Calculations.
Details on the Calculation Dialog for Ventilation
Information about the Duct network calculation dialog.
Details on the Section Parts Table
Information on the Section parts table in the calculation dialog for ventilation.
Details on Lock/Unlock Section Parts
Information about the dialog Lock/unlock section parts in the network calculation Ventilation.

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-Concept Design
Learn how to collaboratively localize and dimension equipment rooms and how to create pipeline corridor concepts.
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 to dimension radiators, convectors, panel heating and concrete core activation systems on the basis of the requirements analysis in LINEAR Building and manufacturer-specific.
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 the 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.
  - Calculation
    Explains the concept of the calculation dialog in Pipe and Air Duct Network Calculations.
    - Details on the Calculation Dialog for Ventilation
      Information about the Duct network calculation dialog.
      - Details on the Flow Paths Table
        Information about the Flow paths table in the calculation dialog for ventilation.
      - About the fluid-mechanical balancing of cross-section splits
        Explains the concept of fluid-mechanical balancing of cross-section splits in the design and calculation of duct networks.
      - Details on the Section Parts Table
        Information on the Section parts table in the calculation dialog for ventilation.
        Details on Lock/Unlock Section Parts
        Information about the dialog Lock/unlock section parts in the network calculation Ventilation.
      - Details on the Components Table
        Information on the Components table in the calculation dialog for ventilation.
      - About Visualization
        Explains the concept of visualization of calculation data and properties of pipe and duct networks.
      - About Results
        Explains the concept of the Results dialog in Pipe and Air Duct Network Calculations.
      - About Reports
        Explains the concept of the reports list in Pipe and Air Duct Network Calculations.
      - About Edit Section Part Data
        Explains the concept of editing section parts in Pipe and Air Duct Network Calculations.
      - Details on Define Section Parts
        Information about the Define section parts dialog in the duct network calculation.
      - About Adjusting Nominal Diameters
        Explains the concept of adjusting nominal diameters in Pipe and Air Duct Network Calculations.
  - Settings
    Explains the concept of Settings in the Pipe and Air Duct Network Calculations.
  - Components
    Explains the concept of the Components section in Pipe and Air Duct Network Calculations.
  - About Rooms
    Explains the concept of Rooms in duct network calculation.
  - Curve data
    Explains the concept of curve data for use in calculating pressure losses for air diffusers, silencers, filters, heaters, coolers, and humidifiers/dehumidifiers, among others.
  - Ducts and Pipes
    Explains the concept of Pipe Tables in duct network calculation.
  - About Tables of Insulation
    Explains the concept of Insulation tables in Pipe and Air Duct Network Calculations.
  - Assigning Insulation
    Explains the concept of assigning insulation in the duct network calculation.
  - Medium
    Explains the concept Medium in Pipe and Air Duct Network Calculations for heating, cooling and ventilation.
  - 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.
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
Get information about material compilation in LINEAR Building. You will also learn how to print or export calculation results and material lists in your CAD program.
Troubleshooting
Get information about possible sources of errors when working with LINEAR Solutions.

Details on Lock/Unlock Section Parts

Information about the dialog Lock/unlock section parts in the network calculation Ventilation.

If you calculate a network for the first time, the dimensions of the components are fixed by default and will not be changed during a calculation. To optimize the pipe network for the given design criteria, you can unfix the dimensions. Depending on the selected discipline, you can fix (lock) and unfix (unlock) other parameters in the dialog, such as the design form or the maximum speeds.

You are here:

Project tab ➤ Discipline Ventilation ➤ Analyse tab ➤ Calculation ➤ Lock/unlock section parts

Entire project, Current System, Current flow path, Current section part

Determines whether you lock or unlock the dimensions or other parameters of all components in the project, the selected system, the marked flow path, or the marked section.

lock

Locks the dimension of the activated parameters. The dimensions of these components are determined during the calculation using the specified parameters.

unlock

Unlocks the dimension of the activated parameters. If you unlock a dimension or parameter, the specifications for the dimensioning from the Settings are used.

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Details on Lock/Unlock Section Parts