Environmental Design Solutions Limited (EDSL) was formed in 1989 to commercially develop Tas Software. EDSL sells Tas software and consultancy services using Tas. EDSL believe that the mixing of development, consultancy and software support leads to a focused software product, with quality support available to end users.

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FAQ - Building Simulator

1. When I try to run a simulation in the Building Simulator, I receive the following error: "Shading data longitude/latitude mismatch. Re-calculate shading data or change the weather file.” How can I resolve this error and go on to produce a TSD file?


2. Why haven’t all of my building elements been exported to the Building Simulator?


3. How do I calculate a daylight factor?


4. I set up a lighting function in my TBD file but my lighting gain has not been reduced.


5. What is a Surface Output Specification and when do I need to use one?


6. How do I model an awning in the Building Simulator using Feature Shading?


7. How do I model vertical fins in the Building Simulator using Feature Shading?


8. How do I model horizontal slats in the Building Simulator, using Feature Shading?


9. How do I model sloped, horizontal slats in the Building Simulator, using Feature Shading?


10. When I run a simulation in the Building Simulator, I receive the following error "Load Shading Failed". How do I address this problem?


11. What is the cause of the "Air Flow Imbalance" error in the Building Simulator?


12. What could cause a "Max pressure exceeded in flow analysis" error in the Building Simulator?


13. How do I address the following error "A single surface accounts for 48.5% of the zone surface area Zone [No.] Surface [No.]" during a simulation within the Building Simulator?


14. I have encountered an Error Overlapping Limits error when simulating my TBD.


15. Which calendar should I use for a Part L/EPC analysis?


16. I encountered an Unrecoverable Error when simulating my TBD file.


17. I encountered a Fortran Memory Allocation error when simulating my TBD file.


18. Can I determine if there are any potential problems with my TBD file before I simulate?


19. How can I quickly determine the number of zones I have applied in my model?