This rule checks that all space of the window area is within the given range. This requirement is typical in building codes. The maximum value can be used that no space has excessive number of windows compared to its area.
The rule parameters are:
Classification used for classifying spaces. Classification names are set in the Classification Name column of the Ignored Spaces table.
The minimum ratio of window area versus space area.
The maximum ratio of window are versus space area.
The table can be used to specify spaces with space usage classification, name, type and/or number that should be ignored by the rule. You can leave any of the cells empty. Use the one that best fits your case and the information that you have in the model. You can also read values to this table from Excel. When you have a model opened, you can select a space usage classification, type, name, and number from a separate dialog opened from the right side of the table cell.
Default Frame Width:
Frame width used in light opening area calculation. Light opening area is calculated by using this, if the window is not found from Light Opening Area table. Light opening area is (window area – 2 * frame width * (window height + window width)).
Light Opening Property:
The main use of the "Light Opening Property" parameter is to define a property whose value is used as light opening area. The property's value can be taken from a property set as shown in the screenshot above. If the unit of the property is expressed in percentage, it is used to multiply the door or window area. This value in this parameter has the first priority to be used in calculation:
In the first case, the value in the "Light Opening Property" parameter is considered as the primary value for the 'Light Opening Area' value.
In the second case, If the value in the "Light Opening Property" parameter is not found or is invalid i.e. if it is not a numeric value then the value for the "Light Opening Area" is taken from the fourth column of the "Light Opening Areas" table if there is any.
In the third case, if both the "Light Opening Property" parameter and the table are empty or have invalid values, then the value for the "Light Opening Area" is taken from the 'Default Frame Width' parameter which has a default value of 40 mm.
Window and Door Classification:
Classification is used to classify the Windows and Doors. The Type column from the Light Opening Areas table has been replaced with the Classification Name. Hence, any classified component can be referred in the table.
Light Opening Areas:
A list of light opening areas of windows and doors. When the classified component such as Window or door, its width and its height match, the light opening area is used instead of window area. You can also read values to this table from Excel. The value in the fourth column 'Light Opening Area' of the Light Opening Areas table is considered as the light opening area value if the primary parameter 'Light Opening Property' has no valid value.
Analysing the results:
The rule creates an issue for each space (space groups are not checked) with not enough or too much window area. If the classified window and the door is found in Light Opening Areas table, and its width and height matches, the area in the table is used instead of window area.
Also, light opening area doors, whose classification, width, and height are found in the table, are taken into account.
The rule creates issues also for windows, whose light opening area is not found in the table (if there is at least one row in the table). And for windows, whose area is smaller than the listed light opening area.
The rule does not have a report.
The rule does not have any tools.