Pset_DoorCommon has no property to indicate whether a door is fitted with a hold-open/release device (e.g. an electromagnetic door holder tied into the fire alarm system). This is common, code-referenced door hardware — comparable in nature to SelfClosing and HasDrive, which already exist in this Pset — but there is currently no standard way to flag it.
Background / problem
Fire and smoke doors are frequently held open in daily use by an electromagnetic (or similar) hold-open device, which releases the door on a signal from the fire alarm system so it can self-close. This is standard, code-referenced practice internationally:
-
UK: covered under BS 7273-4 ("door holders")
-
EU: devices covered by EN 1155 (controlled door closing devices with hold-open function)
-
US: "electromagnetic door holders", referenced in NFPA 72 / IFC (International Fire Code) 703.2.2
-
Germany: "Feststellanlage"
-
Sweden: "magnetuppställning"
This is functionally analogous to two properties already present in Pset_DoorCommon:
-
SelfClosing (IfcBoolean) — indicates the door closes automatically
-
HasDrive (IfcBoolean) — indicates the door has an automatic drive/actuator
Both of these describe door-level behavior driven by attached hardware that could equally be modeled as a separate object (a closer, a motor/actuator) — so there's clear precedent for a simple boolean flag living on the door itself rather than requiring a separate linked element. A hold-open/release device fits the same pattern and is currently the gap.
Proposal
Add a new property to Pset_DoorCommon, applicable to IfcDoor and IfcDoorType:
| Name |
Property Type |
Data Type |
Description |
HasHoldOpenDevice |
IfcPropertySingleValue |
IfcBoolean |
Indication of whether this object is fitted with a hold-open device that keeps the door open during normal use and releases it automatically (e.g. on activation of the fire alarm system) to allow it to close (TRUE), or not (FALSE). |
Happy to help draft the change and provide a pull-request in the repo if maintainers are open to this addition.
Pset_DoorCommonhas no property to indicate whether a door is fitted with a hold-open/release device (e.g. an electromagnetic door holder tied into the fire alarm system). This is common, code-referenced door hardware — comparable in nature toSelfClosingandHasDrive, which already exist in this Pset — but there is currently no standard way to flag it.Background / problem
Fire and smoke doors are frequently held open in daily use by an electromagnetic (or similar) hold-open device, which releases the door on a signal from the fire alarm system so it can self-close. This is standard, code-referenced practice internationally:
UK: covered under BS 7273-4 ("door holders")
EU: devices covered by EN 1155 (controlled door closing devices with hold-open function)
US: "electromagnetic door holders", referenced in NFPA 72 / IFC (International Fire Code) 703.2.2
Germany: "Feststellanlage"
Sweden: "magnetuppställning"
This is functionally analogous to two properties already present in
Pset_DoorCommon:SelfClosing(IfcBoolean) — indicates the door closes automaticallyHasDrive(IfcBoolean) — indicates the door has an automatic drive/actuatorBoth of these describe door-level behavior driven by attached hardware that could equally be modeled as a separate object (a closer, a motor/actuator) — so there's clear precedent for a simple boolean flag living on the door itself rather than requiring a separate linked element. A hold-open/release device fits the same pattern and is currently the gap.
Proposal
Add a new property to
Pset_DoorCommon, applicable toIfcDoorandIfcDoorType:HasHoldOpenDeviceHappy to help draft the change and provide a pull-request in the repo if maintainers are open to this addition.