Knowledge Base Revit
Analyzing Buildings
Get information about the demands analysis of a building with LINEAR Building. The demands analysis includes the calculation of the heat load, the cooling load and the determination of the required air volumes.
Ventilation
Explains the concept of determining air volumes for residential and non-residential buildings.
About Air Volume Calculation for Residential and Non-Residential Buildings
Explains the concept of determining air volumes for residential buildings and for rooms in non-residential buildings.
About the Number of Persons in the Room
Explains the concept of the number of persons in the room in the context of the Ventilation module.

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 demands analysis of a building with LINEAR Building. The demands analysis includes the calculation of the heat load, the cooling load and the determination of the required air volumes.
- About Building Detection
  Explains the concept of building detection in LINEAR Building from a connected CAD program.
- Heat Load
  Select a calculation method for the calculation of the heat load according to the location and requirements of your project.
- Cooling Load Short Procedure
  Learn how to calculate a cooling load for your building based on the short procedure of VDI 2078 (1996), section 6.
- Cooling Load, dynamic
  Select a method for determining the cooling load to suit the location and requirements of your project.
- Ventilation
  Explains the concept of determining air volumes for residential and non-residential buildings.
  - Exclude Structural Levels from the Air Volume Calculation
    Shows step-by-step how to deactivate levels of the building structure for the air volume determination and, if necessary, for the creation of a ventilation concept for residential buildings.
  - Define the Calculation Method for Determining the Air Volume
    Shows step-by-step how to define the calculation procedure for determining the required air volumes in LINEAR Building.
  - About Air Volume Calculation for Residential and Non-Residential Buildings
    Explains the concept of determining air volumes for residential buildings and for rooms in non-residential buildings.
    - About the Number of Persons in the Room
      Explains the concept of the number of persons in the room in the context of the Ventilation module.
    - About the “DIN 1946-6 Domestic Ventilation” Calculation Method
      Explains the concept of determining the required air volumes for domestic ventilation and the creation of ventilation concepts based on the DIN 1946-6 Domestic Ventilation calculation method.
    - About the Calculation Method “DIN 18032-1 Gymnasiums”
      Explains the concept of determining the required air volumes for rooms in non-residential buildings based on the calculation method DIN 18032-1 Gymnasiums.
    - About the Calculation Method “VDI 2082 Sales Premises”
      Explains the concept of determining the required air volumes for rooms in non-residential buildings based on the calculation method VDI 2082-7 Laboratories.
    - About the Calculation Method “Workplace Guidelines”
      Explains the concept of determining the required air volumes for rooms in non-residential buildings based on the calculation method Workplace Guidelines.
    - About the Calculation Method “DIN EN 16798-1 Air Pollution, Procedure 1”
      Explains the concept of determining the required air volumes for rooms in non-residential buildings based on the calculation method DIN EN 16798-1 Air Pollution, Procedure 1.
    - About the Calculation Method “DIN EN 16798-1 Air Pollution, Procedure 2”
      Explains the concept of determining the required air volumes for rooms in non-residential buildings based on the calculation method DIN EN 16798-1 Air Pollution, Procedure 2.
    - About the Calculation Method “DIN 1946-4 Healthcare”
      Explains the concept of determining the required air volumes for rooms in non-residential buildings based on the DIN 1946-4 Healthcare calculation method.
    - About the Calculation Method “DIN 1946-7 Laboratories”
      Explains the concept of determining the required air volumes for rooms in non-residential buildings based on the calculation method DIN 1946-7 Laboratories.
    - About Air Volume Determination acc. to Isso 51 & 53
      Explains the concept of air volume calculation according to ISSO 51 & 53.
    - About the Approximate Determination of Required Air Volumes
      Explains the concept of approximately determining the required air volumes for rooms in non-residential buildings.
  - Details on the “Air Volumes” Section
    ation on the Air Volumes section of the Ventilation module in LINEAR Building.
  - Transfer Supply and Extract Air Volume Flow to a CAD Program
    Shows step-by-step how to transfer the supply and extract air volume flows determined in the Ventilation module to a connected CAD program in LINEAR Building.
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.
Create Pipe Run Scheme
Learn how to create pipe run schemes for pipe networks in LINEAR Building.
Calculate Pipe Run Schemes
Learn how to calculate pipe run schemes 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.
Creating a Scheme
Get information on the workflow Scheme for the disciplines Potable Water and Heating in Revit.
Construction Design
Get information about the workflow Construction design in connection cable trays as well as pipe and duct networks.
Labeling
Learn how to label pipe/duct sections 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.

About the Number of Persons in the Room

Explains the concept of the number of persons in the room in the context of the Ventilation module.

The number of people in the room is required for certain ventilation calculation methods. If the rooms in the CAD model have a value stored in the LINEAR parameter LIN_NUMBER_OF_PERSONS, this is transferred when the building is detected and used for the calculation. The number of persons can also be entered manually. If detected or manually entered values are available, they are used for all relevant calculation methods, regardless of whether a method contains its own calculation methods for determining the number of persons. In cases where the calculated value is to be used instead of the manually entered or detected value, the value from the ventilation calculation method can be entered for each room by clicking on . If the number of persons was neither entered manually nor transferred from the CAD model, when using calculation methods with methods for calculating the number of persons, the calculated value is entered.

In the configuration, you can specify whether the number of persons is transferred to the CAD program during synchronization with a connected CAD program. If the number of persons is transferred to a connected CAD program, both manually entered values and calculated values from Calculation method 1 or Calculation method 2 are transferred if Calculation method 1 does not determine the number of persons.

Ventilation calculation methods in the Ventilation module that use the number of persons (methods with their own calculation method are marked with *):

Workplace Directives (ASR A5)
Healthcare
ISSO 51 & 53 (here ISSO 53)*
Sales Premises*
EN 16798-1, Method 1
DIN 1946-6* ( Calculation for Bedrooms, Children's Room and Guest Room, to be set in the Configuration)

If two methods with their own calculation method for the number of persons are used for the calculation, the number of persons of calculation method 1 will be used. However, as soon as a room is calculated using either Calculation Method 1 or Calculation Method 2 in accordance with DIN 1946-6 Residential Ventilation, other methods are ignored. In such cases, it is assumed that the room is part of a domestic ventilation zone and no longer needs to be calculated as a separate non-residential room.

If, for example, a room is calculated according to DIN 1946-6 Domestic Ventilation (Calculation Method 1) and VDI 2082 Sales Premises (Calculation Method 2), the number of persons results from the calculation of DIN 1946-6, as all other methods are ignored when determining the number of persons with DIN 1946-6.

If a room is instead calculated according to VDI 2082 Sales Premises (Calculation Method 1) and ISSO 51 & 53 (Calculation Method 2), the number of persons results from VDI 2082, as it is the first calculation method that provides a number of persons.

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About the Number of Persons in the Room