Could someone please advise if Special Surface Types are still a current option to define vehicle access doors and personnel doors?
The reason why I ask is because the BRUKL is not showing any personnel or vehicle access doors, dispite them being within the building and dispite the dropdown below the fabric descriptions being correctly selected.
Part L: 2010 (yup we still still do them! [old jobs]
Hevacomp Ver 25.06.15
V25 Manual Extact Below:
Special surface types - In order to use surface types such as vehicle doors, that can be recognised during the PartL analysis, we have provided a facility to recognise special surfaces if you include the following keywords when you set up the description of a relevant surface.
a) External personnel doors – define as a wall or a window, which has the keyword DOOR within its description. In the case of windows, also include the code WALL=n, where n in the index of a wall construction. This wall construction will be used for the door.
b) Vehicle access doors – define as a wall or a window, which has the keyword VEHICLE-DOOR within its description. In the case of windows, also include the code WALL=n, where n in the index of a wall construction. This wall construction will be used for the door.
c) High usage entrance doors – define as a wall or a window, which has the keyword HIGHUSAGE-DOOR within its description. In the case of windows, also include the code WALL=n, where n in the index of a wall construction. This wall construction will be used for the door.
d) Strongly ventilated adjoining space – define as a partition/internal ceiling/internal floor, which has the keyword STRONGLY-VENTILATED within its description.
e) Underground walls - define as a wall, which has the keyword UNDERGROUND within its description.
f) Exposed floors over outside air – define as a ground floor that has the keyword AIR-EXPOSED within its description.
g) Display windows – define as a window that has the keyword DISPLAY-WINDOW within its description.
As an example, you could set up a vehicle access door as a Wall, which has as its description “Highly insulated VEHICLE-DOOR with steel cladding”.
This could be used as a wall within the project to set up vehicle access doors and would be recognised by the PartL package when analysing surfaces and U values.
Note that keywords are not case sensitive, so either vehicle-door or VEHICLE-DOOR could be used. Note that PartL2 will interpret any wall description that contains the word DOOR as a personnel door.
Duncan Brown
Hi Rob,
By any chance is this a glazed door?
Any door that is more than 50% glazed is considered a Window for PartL purposes. If you set a glazed area greater than 50% then we automatically treat this as a window when we pass it to SBEM.
This is as per the iSBEM\SBEM user guide which states:
"When doors have more than 50% glazing, then the light/solar gain characteristics must be included in the calculation. This is achieved by defining these doors as windows. (Otherwise, they are defined as opaque doors.)"
Steve Brown | Bentley Systems
A quick follow up for any users following this thread and curious as to the outcome: The project had 2 custom doors defined. Type 1 was a personnel door with 63% glazing, Type 2 was a vehicular access door with 2% glazing. The rooms in question had a personnel door and a vehicular access door drawn into the CAD layout. The personnel door (Type 1) are treated by SBEM (the PartL calculation engine) as windows, as per my colleagues comment above. The vehicular access doors in this instance had been inadvertently defined as Type 1 doors, rather than Type 2 doors, so were also being treated as windows. Switching them to Type 2 doors resolved the issue.
You may wish to consider this document for more information on reasons why doors may not appear in the BRUKL report.
Answer Verified By: Duncan Brown