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  1. User Manual
  2. Building
  3. Envelope

Walls

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Last updated 1 year ago

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A wall is a part of the building envelope separating conditioned and unconditioned spaces.

Specify a Wall

Walls are defined at each aspect but can also be controlled for the entire model using a default wall or Tags. , solar absorptance, , thickness, density and heat capacity can be set for the entire wall via defaults, supplier or generic templates from a design you have created or as a concept.

Specify a wall for the entire model or via Tags under 'Envelope'. Left-click 'Walls', and you will be presented with the default specifications set when the model is created. Left-click 'Select External Wall' if there are no specifications to nominate the wall performance. Options included 'From Template, 'From Design', and 'As Concept'. These are further explained below.

As Default - Selecting a wall system as a design enables quick specification of a wall system by adopting the default wall specification for the project.

From Template - Selecting a wall system from a template enables quick access to supplier specifications.

From Design - Selecting a wall system from a design enables quick access to a wall system you have created and saved in your Project. Once selected, all associated walls must be updated within the design, saved, and then reselected.

As Concept - Selecting a wall system as a concept enables quick specification of a wall system from baseline (low performance), moderate (typical performance) or enhanced (high performance). Once selected, all associated walls can be updated.

Air Walls

An Air Wall is a feature that enables air exchange between two zones. It can also be considered a method to combine two zone volumes into one. Air Walls can only be applied between zones with the same conditioning profile. 0.35 ACH is set as a default, with a range of 0.05 - 10 ACH now available.

Zone Type
Indicative Air Change Rate (ACH)

Offices (with windows)

2-3 ACH

Conference Rooms

2.5-4 ACH

Lobbies and Entrances

3-4 ACH

Waiting Areas

2-3 ACH

Restaurants and Cafeterias

3-4 ACH

Retail Spaces

2-3 ACH

Residential Buildings

1.5-3 ACH

Add an Air Wall by selecting the aspect to be determined as an air Air Wall. Select 'Select Wall' and then 'Air Wall'. Next, set the air exchange at the preferred value. Then, Save.

Exposure Setting

An Exposure Setting refers to characterising a building's external surfaces in terms of their orientation and exposure to different weather conditions, such as sun, wind, and precipitation. The exposure settings help define how the building surfaces interact with the surrounding environment, influencing energy transfer, thermal comfort, and overall building performance and can be set for external walls, roofs and floors.

External - describes walls exposed to the external environment (e.g. sun, wind). This is nominated by default.

Adiabatic - describe surfaces next to zones with the same thermal conditions (thus, no heat transfer).

Set the Exposure Setting of your Wall, Roof or Floor in the Envelope area or locally at the Aspect level. Open the dropdown menu to select the appropriate 'Exposure' setting.

Edit Title

When using a default wall, roof, floor, or window as concept construction, the reported name of the construction is 'Concept'. This default can be updated to align with your architectural drawings and then be correctly nominated in reports.

Edit the title of your Wall, Roof or Floor either in the Envelope area or locally at the Aspect level. Select the concept construction you want to update and then the 'Edit Title' icon. Next, provide the new Title, hit 'Update' and then 'Save'.

Ground Contact -describes a wall with direct contact with ground temperatures. Ground temperatures are set under .

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