Exterior spaces

SPACE-EXT

Makes usable exterior areas measurable for area verification, use planning, and coordination between the building and its surroundings.

Description

Exterior spaces such as balconies, terraces, and treated surroundings.
Room use is carried in LongName; Name may carry the room number.

Modelling guidelines

Model as a volume outside the building - from the building's outer face to the property boundary or the boundary of the project area.
Assign balconies and terraces to the matching storey.
Best practice: model exterior spaces only 1 m high to visually distinguish them from interior spaces quickly.
If these room-naming and height conventions are followed consistently, assigning TRUE to IsExternal can be automated easily. This further reduces the potential for errors and the effort required.

Attributes

Name	Description	Unit
Name	Unique technical room number for planning. It provides discipline designers with a stable ID for linking their data permanently to the space and identifying significant changes quickly. It should stay stable as long as: the room size does not change substantially (e.g. from 12 m² office to 25 m² open-plan office) the function does not change substantially (e.g. from office to meeting room) and the orientation does not change (e.g. from south to east facing) Do not use for signage - signage room numbers change often and belong in SignageRoomNumber.
PredefinedType	Marks the object as a space. Allowed values `SPACE` - space Note The also permitted values `INTERNAL` and `EXTERNAL` conflate space type and location and have been deprecated since IFC4.3_ADD2. Therefore, use `SPACE` now and specify interior or exterior status using IsExternal.
InteriorOrExteriorSpace	Marks the space as exterior. Allowed values `EXTERNAL` - exterior space Note Additional IFC2x3 classification; exterior status is specified across all versions using IsExternal.
LongName	Normalized room use for exterior spaces. Allowed values See the Exterior space name value list.
Reference Pset_SpaceCommon	Area class of the exterior space according to SIA 416 or SIA D0165. Allowed values See the Space reference exterior SIA 416 / D0165 value list, e.g. `AGF`, `AVF`, `BUF`, `UUF` (SIA 416) or `BUF-10`, `AVF`, `AFF`, `ANF` (D0165).
IsExternal Pset_SpaceCommon	Marks an exterior space. Allowed values `TRUE` - exterior space
NetPlannedArea Pset_SpaceCommon	Ordered target net area of the exterior space.	m²
SignageRoomNumber ePset_Space	Room number for wayfinding signage (labelling, orientation). Separate from the technical planning room number (Name), because signage numbers often change and are therefore not stable identifiers for planning and operation.
DesignAreaLoad ePset_SpaceRequirement	Agreed design area load for the usage agreement.	kN/m²
DesignPointLoad ePset_SpaceRequirement	Agreed design point load for the usage agreement.	kN
VibrationRequirements ePset_SpaceRequirement	Agreed target vibration requirements for the usage agreement according to ISO vibration criteria and Vibration Criterion (VC) per IEST. Allowed values `ISO Workshop` - 800 µm/s (32'000 µin/s): workshops, coarse manufacturing areas, machine protection zones `ISO Office` - 400 µm/s (16'000 µin/s): offices, control rooms, general administrative areas `ISO Residential (Night)` - 200 µm/s (8'000 µin/s): residential areas (night), light PC workplaces, microscopes <40× `ISO Operating Theatre (OT)` - 100 µm/s (4'000 µin/s): baseline (Base Curve): operating theatres, general laboratories, microscopes up to 100× `VC-A` - Vibration Criterion A per IEST `VC-B` - Vibration Criterion B per IEST `VC-C` - Vibration Criterion C per IEST `VC-D` - Vibration Criterion D per IEST `VC-E` - Vibration Criterion E per IEST
DesignAreaLoadActual ePset_Space	Verified actual area load for comparison with the usage agreement.	kN/m²
DesignPointLoadActual ePset_Space	Verified actual point load for comparison with the usage agreement.	kN
VibrationRequirementsActual ePset_Space	Verified actual vibration class for comparison with the usage agreement according to ISO vibration criteria and Vibration Criterion (VC) per IEST. Allowed values `ISO Workshop` - 800 µm/s (32'000 µin/s): workshops, coarse manufacturing areas, machine protection zones `ISO Office` - 400 µm/s (16'000 µin/s): offices, control rooms, general administrative areas `ISO Residential (Night)` - 200 µm/s (8'000 µin/s): residential areas (night), light PC workplaces, microscopes <40× `ISO Operating Theatre (OT)` - 100 µm/s (4'000 µin/s): baseline (Base Curve): operating theatres, general laboratories, microscopes up to 100× `VC-A` - Vibration Criterion A per IEST `VC-B` - Vibration Criterion B per IEST `VC-C` - Vibration Criterion C per IEST `VC-D` - Vibration Criterion D per IEST `VC-E` - Vibration Criterion E per IEST
UsageUnitReference ePset_Space	Stable reference of the usage unit to which the exterior space belongs, for example an apartment, office unit, or commercial unit. Note Alternatively, the spaces of a usage unit can be grouped using `IfcZone`.
FloorCovering Pset_SpaceCoveringRequirements	Outdoor floor surface for early planning - as a space property only, without a modelled covering. Leaf name (e.g. `Gravel`) when the surface material is known; otherwise the parent class (e.g. `Sealed`, `Partially permeable`, `Permeable`). Allowed values See the Abstract outdoor floor surfaces value list.
Checkliste ePset_Space	Free-text description of fit-out work in the exterior space including sequence - so contractors on site can see what needs to be done.
NetFloorArea Qto_SpaceBaseQuantities	Net floor area of the modelled exterior space.	m²