What are the steps to specify Room Type via Room polylines for Registration?

  • Create layers for room type in the strict format of Room_Polylines_Roomtype e.g. Room_Polylines_Bedroom
  • The room type name must be present on the RoomType.txt file. The list can be viewed on Register dialog /Room tab/ Room type combobox
  • Room type will be set based on the layer name of the room polyline during registration
  • Avoid these characters (‘<‘, ‘>’, ‘^’, ‘\”‘, ‘:’, ‘?’, ‘*’, ‘|’, ‘;’, ‘=’, ‘,’, ‘@’) in the room type name as it is not supported by Autocad on layer names

How to specify the values for the new Maintenance Factor (dirt factor)?

It is based on the BS 8206-2:2008 guideline (Lighting for buildings. Code of practice for daylighting).
Maintenance factor = 100% – (loss% x exposure multiplier x special exposure multiplier) e.g. 100% – 8%x1x1 = 92% (0.92)

  • The default value used are loss of daylight = 8 (Urban, Residential), exposure = 1(Normal exposure, Vertical), special exposure = 1(not used).
  • The exposure multiplier depends on the exposure type and the window inclination.


Exposure Exposure multiplier
Vertical glazing Inclined glazing Horizontal glazing
Normal exposure x1 x2 x3
Exposed to heavy Rain x0.5 x1.5 x3
Exposed to snow x1 x3 x4


  • For example, Glazing transmittance of BRE recommended clean, clear double glazing with a low emissivity window is 0.68.
  • In the old version of software, this value used to be modified to include the maintenance factor and value of 0.63(0.68 x 0.92) would be used as glazing transmittance.
  • In the new version of software, full glazing transmittance of 0.68 should be used instead of 0.63 to avoid maintenance factor to be applied twice.
  • Would the result change if model registered with old version is used on new version of software?
    No. The maintenance factor will be assumed to be 1 for old version windows to keep the results same. However, it is important to modify the glazing transmittance if any maintenance factor is included with it when the windows are updated on the new version of software.
  • Is it possible to not use the maintenance factor completely to avoid any mix up?
    Yes. If the loss of daylight is set to 0. The maintenance factor will remain 1 which will work like the old version of the software

How to specify offset values for VSC, APSH and ADF?

  • Offset value should be positive to go towards the room and negative to go away from the room
  • For example, Assuming VSC and APSH calculation point is on the outside of a 0.3 meter wall, ADF calculation point is on the mid-point of the wall, the offset can be set as below
Window Location\Calculation VSC & APSH Offset ADF Offset
Window on Outside Wall 0 0.15
Window on Centre of Wall -0.15 0
Window on the Inside Wall -0.30 -0.15

What are the steps to modify shape of registered Room polylines?

  • Change the shape of the Room polyline
  • Query the Room address or Select polyline for the concerned Room(s) on Register dialog/ Update Mode/ Room
  • If the room was already listed when the changes were made, Re-Query the room
  • Register dialog /Update Mode /Room. Update
  • DrawRoomGridPnts command can be used to confirm shape change has been updated correctly.

What are the steps to restore Room-Window link after copying rooms and windows?

  • Copy the required Rooms and windows
  • Paste the copied rooms and windows
  • Register dialog /Tools/ Copy Room-Window Link (Select the original rooms)
  • Register dialog /Tools/ Paste Room-Window Link (Select the copied rooms and windows)
  • Register dialog /Update Mode /Room. The ReReg checkbox should be Ticked. If it has remained unticked, Use ForceReregister button before update to enforce re-registration.
  • DrawRoomGridPnts command should be used to confirm the room has been updated correctly.

What are the steps to copy amenity to another model?

  • Copy the required Amenities and Paste to a new model
  • Register/Update Mode/ Amenity. Update the Amenity
  • Use DrawAmenityGridPnts command to confirm the copy is done correctly

Can room/amenity polyline have a curve?

  • No. It’s not possible because of Autocad issues on triangulation of such polylines.

Can window polyline have a curve?

  • Yes

Can a room/amenity polyline with a slope be registered?

  • No. The polyline must be horizontal and coplanar.

Can a 3D polyline be registered as room/amenity/window?

  • No. It must be a Lightweight 2D polyline. Heavyweight 2D polylines can be converted to Lightweight using convertpoly command.

Why is Amenity registration taking a very long time?

  • The default grid spacing of 0.3 means there could be thousands of calculation points within the area which causes the registration time to increase. Grid spacing can be increased slightly to improve the registration time.

Can room/window groups be automaticaly created?

  • Yes. Register dialog/Create Groups

Register by Model

  1. Can only windows be registered on their own?
    Yes. Without Rooms option should be ticked
  2. Can Rooms be registered on their own?
    Yes. If windows are already registered with same building and floor address.
    Perform 1.Pre-Reg Room then 3. Register by model. Windows will be linked to the roomsNo. If windows are not registered with same building and floor address.
  3. How can window/room address be updated if they are added/removed after the initial registration?Register dialog /Update Mode/ Re-Number button allows to renumber windows and rooms. Building polyline and building name block are required. Re-Numbering can be done for partial floor, single floor or entire building.
  4. Can window/room name be started from a different location in the building?The first window and the order is determined by the starting point and order of building polyline vertices. Redraw the polyline to match the requirement and perform renumbering.
  5. Why could not the building name and/or starting floor be determined from the building detail block?
    • The block must be on Building_Polylines layer.
    • The block’s base point must be within the outlining building polyline
    • The starting floor name must already exist on the floor name combobox(loaded from FloorList.txt)

What unit is used by the software?

  • Meters. If the model is in millimeters, Registration and conversion process would take forever and/or give error. Model must be scaled to meters.

Where is Rasterize(XNB) option?

  • The Rasterize rendering option is discontinued from Version 4.1 onwards. The new default Raycasting rendering option can create waldram images similar to the rasterize option.

Can PROPOSED group be created automatically when doing ROL cutbacks?

  • Yes. Tick the Auto create PROPOSED group option in Asset tab.
    It will re create the group from objects in 3D_PROPOSED_BUILDINGS layer.

No Contour is created after running ROL/DD Calculation

  • Use DrawRoomGridPoints to check calculation points position. They should be located in the WP height. If not update the room(this is usually the case if the room is moved/rotated/reshaped without being updated).
  • Check if the window is facing inside, it must face outside. Use SpinWindows command to fix.
  • Convert the model if windows have been updated but the model has not been converted again.
  • View the model in Conceptual mode and check if any entities block the window.
  • Use DrawRoomTriangles command to check the triangulation. If it gives error, then the problem may be the room is not registered properly.

What transparency value should be used for Waldram image?

  • Transparency: 0 = When overlapping, Proposed on top, Existing Hidden
  • Transparency: 255 = When overlapping, Existing on top, Proposed Hidden
  • Transparency :155 (or anything in middle) = Both visible

What does the color of the dot indicate in APSH Waldram diagram?

  • Dark Blue dot indicates winter sun
  • Dark Yellow dot indicates summer sun
  • light Blue dot indicates blocked winter sun
  • light yellow dot indicates blocked summer sun
  • Dot with hole indicate that the dot is seen by more than one window.

What are the steps to Preview the results?

  • Select the required tab Window(s)/Room(s)/Amenity
  • Tick Self Test option if the result is only for Proposed group
  • Use a Group or Select items on combo box below the calculation name
  • VSC and APSH results are shown together and uses VSC group
  • Click Preview
  • Note: There is no need select the tick boxes next to the calculation name for Preview

What are the steps to Export the results?

  • Select the tick boxes next to the calculation name to be exported. (ROL, DD, ADF, VSC, APSH, Amenity or ALL)
  • Tick Self Test option if the result is only for Proposed group
  • Tick CSV Report option to export the results in csv format
  • Use a Group or Select items on combo box below the calculation name
  • VSC and APSH results are exported in same sheet for (default) report and uses VSC group. Bespoke reports may vary.
  • Click Export to File

How to use tags from Project Settings in Reports?

  • Replaceable tags can be inserted in Excel template including header and footer. They should be specified as <tag> e.g. <Project Name> <Report Title>. The values can be defined in Project Settings dialog.

What are the steps to add results to the label?

  • Select entity type Window/Room/Amenity
  • Tick Existing, Proposed or both options as necessary
  • Select the result to be added VSC/APSH/ADF/DD/ROL
  • Tick Show Failures option to highlight the failed results with red coloured labels
  • Click on Add Labels to add/update labels

Why are Mesh colours not seen in Autocad?

  • Mesh objects are visible by layer colour in Wireframe view. Change view to Realistic/Shaded to see the individual Mesh face colours.
    To see Mesh face colours in Wireframe view, explode the Mesh so that it gives faces whose colours can be seen in any view.