|
Classification |
|
|---|---|
|
Applicability |
When building space type uses are known and can be delineated within the building area |
|
Definition |
Space-by-space classification is one of two available classification methods for identifying the function of the building, which for most purposes determines certain energy-related requirements for the baseline and create defaults for the proposed building design. See Appendix B for a list of the building types and space types that may be selected. The building or space type determines the following default information:
|
|
Units |
List: See the tables in Appendix B. If the building activity is specified by the whole building method, then this input is not applicable. |
|
Input Restrictions |
The space-by-space method is restricted to the common space types defined in Section 9 of ASHRAE 90.1 and listed in Appendix B. Detailed information about each space must be known in order for the space-by-space method to be used over the whole building method. Either method may be used, but the two may not be mixed within a single rating. |
|
Baseline Rules |
The baseline building shall have a corresponding space type for each one in the proposed design and the classifications shall be the same. |
|
Floor Area |
|
|---|---|
|
Applicability |
All projects that use the space-by-space classification method (see above) |
|
Definition |
The floor area of the space. The area of the spaces that make up a thermal block shall sum to the floor area of the thermal block. |
|
Units |
Square feet (ft²) |
|
Input Restrictions |
Area shall be measured to the outside of exterior walls and to the center line of partitions. |
|
Baseline Rules |
Area shall be identical to the proposed design. |
|
Space Functions |
|
|---|---|
|
Applicability |
All projects |
|
Definition |
Spaces need to be identified using the Space-by-Space method, when know. When space types are not known, the Building Area Method can be used for the space use classification. The building area types and space-by-space type classifications will be defined from Standard 90.1-2019, Section 9.5.1 and Section 9.6.1 respectively. More than one building type category may be used in a building if it is a mixed-use facility. If space type categories are used, the user may simplify the placement of the various space types within the building model, provided that building-total areas for each space type are accurate. The allowed building types in building area method or space-by-space method are documented in COMNET Appendix B (COMNET 2017). The building or space type provides default values for the following: • Number of Occupants (occupant density) • Equipment Power Density • Lighting Power Density • Hot Water Load • Ventilation Rate • Schedules When the space classification for a space is not known, the space is required to be classified as an office space. |
|
Units |
List |
|
Input Restrictions |
The space-by-space method is restricted to the space types defined in Section 9 of Standard 90.1 and listed in COMNET Appendix B (COMNET 2017) The user may simplify the placement of the various space types within the building model, provided that building total areas and orientation of glazed exterior walls for each space type are accurate |
|
Baseline Building |
Same as proposed |
|
Floor Area |
|
|---|---|
|
Applicability |
All projects that use the space-by-space classification method (see above) |
|
Definition |
The floor area of the space. The area of the spaces that make up a thermal zone shall sum to the floor area of the thermal zone. |
|
Units |
Square feet (ft²) |
|
Input Restrictions |
Area shall be measured to the outside of exterior walls and to the center line of partitions. |
|
Baseline Building |
Same as Proposed |