Knowledge Base AutoCAD
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.
Heat Load
Select a calculation basis for the calculation of the heat load according to the location and requirements of your project.
Heat load calculation according to DS 418(2020)
Explains the concept of heat load calculation according to the danish standard DS 418.
About General Heat Load Data
Explains the concept of general heat load data in the context of heat load calculations.
Details on Ventilation
Information about the Ventilation section in the general heat load data.

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 AutoCAD and LINEAR Building.
Preparing and Editing Buildings and Architecture
Learn how to prepare drawings provided by an architect to create an architecture for building analysis.
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.
- Heat Load
  Select a calculation basis for the calculation of the heat load according to the location and requirements of your project.
  - Heat Load Calculation Based on EN 12831-1 (2017)
    Explains the concept of heat load calculation based on EN 12831-1 (2017).
  - Heat Load Calculation Based on EN 12831 (2003)
    Explains the concept of heat load calculation based on EN 12831 (2003).
  - Heat load calculation according to ISSO 51 and 53 (2018)
    Explains the concept of heat load calculation according to the Dutch standards ISSO 51 and ISSO 53 (2018).
  - Heat Load Calculation According to SN SIA 384/2 (2020)
    Explains the concept of heat load calculation based on SN SIA 384/2 (2020).
  - Heat load calculation according to DS 418(2020)
    Explains the concept of heat load calculation according to the danish standard DS 418.
    - About Building Detection
      Explains the building detection concept in relation to the heat load calculation.
    - About General Heat Load Data
      Explains the concept of general heat load data in the context of heat load calculations.
      - Select Calculation Base
        Shows step-by-step how to select a calculation base for your heat load.
      - Details on Climate Data for the Denmark
        Information about the Location and climate data section of the general heat load data.
      - Editing Table for Thermal Bridge Supplements
        Shows step-by-step how to edit the thermal bridge supplements table.
      - Set Ventilation System Globally
        Shows step-by-step how to set up a ventilation system for your entire project.
      - Set Ventilation System in Ventilation Zone
        Shows step-by-step how to define the ventilation system at the ventilation zone level.
      - Details on Ventilation
        Information about the Ventilation section in the general heat load data.
      - Details on Temperatures to Unheated Rooms
        Information on the Temperatures to unheated rooms section in the general heat load data.
      - Details on Shielding Class
        Information about the Shielding class section in the general heat load data.
      - Details on Specific Air Permeability (50 Pa)
        Information on the Specific air permeability (50 Pa) section of the general heat load data.
    - About Component Values
      Explains the concept of component values.
    - About the Transmission
      Explains the concept of transmission at room level in relation to the heat load calculation.
    - About Ventilation Data
      Explains the concept Ventilation data in relation to the heat load calculation.
  - Heat load calculation according to SP 60.13330.2016
    Explains the concept of heat load calculation based on SP 60.13330.2016.
  - Approximate Heat Load
    Explains the concept of approximate heat load calculation by means of quick entry.
- 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.
- Domestic Ventilation According to DIN 1946-6
  Explains the concept of the modules for domestic ventilation according to DIN 1946-6.
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 transfer radiators or chilled beams to a LINEAR Building connected CAD platform and insert symbols and components from the libraries into CAD.
Drawing Networks
Learn how to draw pipe and duct networks, connect components, generate schemes, and create slots and openings.
Calculating Networks
Learn how to calculate pipe and duct networks.
Automatic labeling and dimension
Learn how to label components and sections in your drawing and how to dimension your drawing.
Output
Get basic information on output to the LINEAR Solutions for AutoCAD. for output to LINEAR Building and print mask editor.

Details on Ventilation

Information about the Ventilation section in the general heat load data.

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Module overview ➤ Heat load ➤ Project level ➤ General heat load data ➤ Ventilation

Drop-down list: Selection of the ventilation system

Select the type of ventilation system as the default setting for the project. This default setting is initially adopted for each ventilation zone. You can make a different specification in each ventilation zone. If natural ventilation is selected, the specifications of the Shielding class are taken into account at room level for the calculation of the specific volume flow through joints.

Eta value (heat recovery)

Enter the efficiency of the heat recovery system in percent. It is only used if there is a supply and exhaust air system (in the ventilation system section, room data ventilation). The efficiency is then used to calculate the supply air temperature of supply air rooms.

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Details on Ventilation

Drop-down list: Selection of the ventilation system

Eta value (heat recovery)