Leaving Facades or Surfaces Unlocked means that they will be affected by changes made to settings for the entire model such as Glazing Percentage, Glazing Specifications, Percentage Frame etc. If Surfaces have been locked, settings will not be applied to these areas even if they are selected.
They will also be affected by changes to Glazing Dimensions on other Surfaces (since the Overall Glazing Percentage for the project will be maintained first). This means that if some Surfaces have their glazed area adjusted, any unlocked Surfaces will also automatically adjust to maintain the Overall Glass to Wall ratio for the project. For this reason, locking and unlocking or Surfaces is provided (to retain any settings defined).
If you wish to lock a specific Façade or Surface into its current condition and prevent any future changes affecting these, uncheck the Selected surfaces unlocked box so that it will then read ‘Selected surfaces locked’. This prevents any subsequent actions (e.g. changes to other Facades) from making modifications to the condition of that Façade or that Surface, and its settings will remain in their current state.
A padlock symbol will appear beside the selected Surfaces in the list as an indication.
You will notice that once you have unchecked this box to lock a Façade/Surface, the controls grey out and you will not be able to apply any settings until it is unlocked again. This prevents any changes being made to these Facades/Surfaces when adjustments are made to the model (eg. overall glazing percentage, specifications etc).
Note: the setting for simulating Surrounding Buildings will remain available