Knowledge Base AutoCAD
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.
Heat Load
Select a calculation method for the calculation of the heat load according to the location and requirements of your project.
Heat load calculation according to ISSO 51 (2023) and 53 (2018)
Explains the concept of heat load calculation according to the Dutch standards ISSO 51 and ISSO 53 (2018).
About the Transmission
Explains the concept of transmission at room level, in relation to the heat load calculation.
Setting Building Unit Data
Shows step-by-step how to set fundamental building unit 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 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 from an Excel Room Data Sheet
  Explains the concept of using room data sheet-based workflows in early planning phases.
- About Building Detection From A CAD Program
  Explains the concept of building detection in LINEAR Building from a connected CAD program.
- Preparing Building in LINEAR Building
  Learn how to create a building structure manually in LINEAR Building.
- Room Data Sheet
  Explains the concept of the Room Data Sheet module.
- Heat Load
  Select a calculation method 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 (2023) and 53 (2018)
    Explains the concept of heat load calculation according to the Dutch standards ISSO 51 and ISSO 53 (2018).
    - About Room Overview
      Explains the concept of the room overview in the heat load calculation.
    - About General Heat Load Data
      Explains the concept of general heat load data in the context of heat load calculations.
    - 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.
      - Defining Rooms as Unheated
        Shows step-by-step how to define a room in your project as unheated.
      - Editing Room Temperature
        Shows step-by-step how to set or modify the room temperature.
      - Creating New Room Component
        Shows step by step how to create a new component in the room.
      - Defining a Room Component as Heated
        Shows step by step how to define a room component as heated.
      - Assigning Adjoining Room to Room Components
        Shows step by step how to assign a room adjoining section to a Room component corridor.
      - Setting Summand f1 or the Adjoining Temperature
        Shows step by step set the adjoining temperature or the summand f1 in rooms.
      - Details on "Transmission"
        Information on the Transmission section at room level.
      - Setting Building Unit Data
        Shows step-by-step how to set fundamental building unit data.
      - Setting Time Constant for Building Unit Individually
        Shows step-by-step how to set the time constant per building unit.
      - Setting Minimum Temperature of the Building Unit
        Shows step-by-step how to set the minimum temperature for the unheated condition in a building unit.
      - Details on "General Building Unit Data"
        Information about the section General Building Unit Data on the tab Heat Load on the building unit level in the calculation method ISSO 51 (2023) and 53 (2018).
      - Details on General Ventilation Zone Data
        Information on the General Ventilation Zone Data section of the Heat Load module at ventilation zone level.
      - Search and Replace Component Data
        Shows step-by-step, how to search and replace component data.
    - About Ventilation Data
      Explains the concept Ventilation data in relation to the heat load calculation.
    - About the Intermittent Heating Operation
      Explains the concept of intermittent heating operation at room level in connection with the heat load calculation.
  - 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.
  - 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.
- Ventilation
  Explains the concept of determining air volumes for residential and non-residential buildings.
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 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.
Labeling and Dimensiong
Learn how to label components and sections in your drawing and how to dimension your drawing.
Output
Get basic information on creating output with AutoCAD, output in LINEAR Building and on the print mask editor.

Setting Building Unit Data

Shows step-by-step how to set fundamental building unit data.

Before you begin

You would like to set fundamental settings for a building unit.

Tip: You can set the setting for the Building unit in the Building area of the Building data (Project level (Building structure) ➤ General).

Navigate to

Module Overview ➤ Heat Load ➤ Building Unit Level (Building structure) ➤ General Building Unit Data

Procedure

Activate the option Calculate Temperature theta_b according to Annex F.2, if the calculation of transmission losses at components adjacent to this building unit shall be calculated according to annex F.2.
If this building unit uses a heat transfer system that differs from the global selection, specify the Heat Transfer System for Rooms Higher than 4 m here.

Results

The basic building unit data is set.

Name	Purpose	Lifetime	Type	Provider
CookieConsent	Saves your consent to using cookies.	1 year	HTML	Website
fe_typo_user	Assigns your browser to a session on the server.	session	HTTP	Website

Name	Purpose	Lifetime	Type	Provider
_ga	Used to distinguish users.	2 years	HTML	Google
_gat	Used to throttle request rate.	1 day	HTML	Google
_gid	Used to distinguish users.	1 day	HTML	Google
_ga_QTGLMF6700	Google Analytics cookie to throttle the request rate.	2 years	HTML	Google
_gcl_au	Used by Google AdSense to experiment with advertisement efficiency.	3 months	HTML	Google
_clck	Persists the Clarity User ID and preferences, unique to that site, on the browser. This ensures that behavior in subsequent visits to the same site will be attributed to the same user ID.	1 years	HTML	Microsoft
_clsk	Connects multiple page views by a user into a single Clarity session recording.	366 day	HTML	Microsoft
_uetsid	This is a tracking cookie used by Microsoft Bing Ads. It allows us to target a user who has visited our website before.	1 day	HTML	Microsoft
_uetvid	Used to track visitors across multiple websites to present relevant advertising based on the visitor's preferences.	390 day	HTML	Microsoft
ln_or	Registers statistical data on users’ behaviour on the website. Used for internal anyalyzes by the website operator.	1 day	HTML	LinkedIn

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Setting Building Unit Data

Before you begin

Navigate to

Procedure

Results