Building Performance Ruleset Data Model Specification

This specification is intended to supplement the ASHRAE Standard 229P Ruleset Model Description (RMD) schema. Where the RMD schema attempts to characterize ruleset models for a specific building design, this specification characterizes the data from the ruleset needed to apply a ruleset to any building design.

Scope

This specification covers building performance ruleset data.

Applicability

This specifcation applies to any building performance ruleset containing rules on how to transform a user design model into derivative buidling design models. Such derivatives go by several names within the industry, including (but not limited to):

Proposed design
Budget design
Standard design
Reference design
Baseline desing
Benchmark design
Prescriptive design

This specification also covers definitons of terms within the ruleset that are required to interpret the rules, such as definitions of:

Climate zones
Occupancy types
Space conditioning types
Space function types
Construction types

This draft of the specification only includes ruleset data for describing opaque envelope rules.

Exclusions

This specification does not cover rules that involve more sophisticated logic that is better suited for programming-language spcific syntax rather than data files.

This draft of the specification does not include ruleset data for the following types of rules (but are planned for future versions):

Fenestration rules
HVAC rules
Lighting rules
Equipment rules
Service hot water rules

Data Model

Enumerations

SchemaType

Enumerator	Description	Notes
`BUILDING_PERFORMANCE_RULESET`	Building Performance Ruleset

Data Groups

BuildingPerformanceRuleset

Name	Description	Data Type	Constraints	Req
`metadata`	Metadata	`{Metadata}`	`schema=BUILDING_PERFORMANCE_RULESET_DATA`	$✓$
`definitions`	Collection of definitions relevant to rules	`{Definitions}`		$✓$
`model_rulesets`	List of model rulesets	`[{ModelRuleset}]`		$✓$

ModelRuleset

Name	Description	Data Type	Units	Constraints	Req	Notes
`ruleset_model_types`	List of ruleset model types that this set of rules applies to.	`[Reference]`			$✓$
`envelope_rules`	Envelope rules	`{EnvelopeRules}`			$✓$

EnvelopeRules

Name	Description	Data Type	Units	Constraints	Req	Notes
`opaque_envelope_rules`	Opaque envelope rules	`{OpaqueEnvelopeRules}`			$✓$

OpaqueEnvelopeRules

Name	Description	Data Type	Req
`exterior_roofs`	Exterior roof rules	`[{OpaqueEnvelopeRule}]`	$✓$
`semi_exterior_roofs`	Semi-exterior roof rules	`[{OpaqueEnvelopeRule}]`	$✓$
`exterior_walls`	Exterior wall rules	`[{OpaqueEnvelopeRule}]`	$✓$
`semi_exterior_walls`	Semi-exterior wall rules	`[{OpaqueEnvelopeRule}]`	$✓$
`exterior_floors`	Exterior floor rules	`[{OpaqueEnvelopeRule}]`	$✓$
`semi_exterior_floors`	Semi-exterior floor rules	`[{OpaqueEnvelopeRule}]`	$✓$
`exterior_below_grade_walls`	Exterior below-grade wall rules	`[{OpaqueEnvelopeRule}]`	$✓$
`semi_exterior_below_grade_walls`	Semi-exterior below-grade wall rules	`[{OpaqueEnvelopeRule}]`	$✓$
`exterior_on_grade_floors`	Exterior on-grade floor rules	`[{OpaqueEnvelopeRule}]`	$✓$
`semi_exterior_on_grade_floors`	Semi-exterior on-grade floor rules	`[{OpaqueEnvelopeRule}]`	$✓$

OpaqueEnvelopeRule

Name	Description	Data Type	Req
`climate_zones`	List of climate zone designations that this rules applies to	`[Reference]`
`occupancy_types`	List of occupancy types that this rule applies to	`[Reference]`
`construction_types`	List of construction types that this rule applies to	`[Reference]`
`has_radiant_heating`	This rule applies to envelope components with radiant heating	`Boolean`
`construction`	Construction applied to corresponding envelope components in the ruleset model	`{Construction}`	$✓$

Enumerator

Name	Description	Data Type	Constraints	Req
`id`	Enumerator name	`ID`	`(^([A-Z]([A-Z]\|[0-9]))(_([A-Z]\|[0-9])+)$)`	$✓$
`description`	Description	`String`		$✓$
`notes`	Notes	`String`

Definitions

Name	Description	Data Type	Constraints	Req
`climate_zone_definitions`	List of relevant climate zones	`{ClimateZoneDefinitions}`		$✓$
`ruleset_model_types`	List of relevant ruleset model types	`[{Enumerator}]`	`id.Constraints=:RulesetModelType:`	$✓$
`space_conditioning_types`	List of valid space conditioning types	`[{Enumerator}]`	`id.Constraints=:SpaceConditioningType:`	$✓$
`occupancy_types`	List of valid occupancy types	`[{Enumerator}]`	`id.Constraints=:OccupancyType:`	$✓$
`construction_types`	List of valid construction: types	`[{Enumerator}]`	`id.Constraints=:ConstructionType:`	$✓$

ThermalClimateZone

Name	Description	Data Type	Units	Constraints	Req
`id`	Designation	`ID`		`:ThermalClimateZone:`	$✓$
`description`	Description	`String`			$✓$
`minimum_cooling_degree_days`	Minimum cooling degree-days	`Numeric`	K·day	`≥0`
`minimum_cooling_degree_days_inclusive`	Minimum cooling degree-days is inclusive	`Boolean`
`maximum_cooling_degree_days`	Maximum cooling degree-days	`Numeric`	K·day	`≥0`
`maximum_cooling_degree_days_inclusive`	Maximum cooling degree-days is inclusive	`Boolean`
`minimum_heating_degree_days`	Minimum heating degree-days	`Numeric`	K·day	`≥0`
`minimum_heating_degree_days_inclusive`	Minimum heating degree-days is inclusive	`Boolean`
`maximum_heating_degree_days`	Maximum heating degree-days	`Numeric`	K·day	`≥0`
`maximum_heating_degree_days_inclusive`	Maximum heating degree-days is inclusive	`Boolean`

MoistureClimateZone

Name	Description	Data Type	Units	Constraints	Req	Notes
`id`	Designation	`ID`		`:MoistureClimateZone:`	$✓$
`description`	Description	`String`			$✓$

ClimateZone

Name	Description	Data Type	Constraints	Req
`id`	Designation	`ID`	`:ClimateZone:`	$✓$
`thermal_climate_zone`	Reference to the thermal climate zone definition for this climate zone	`Reference`	`:ThermalClimateZone:`
`moisture_climate_zone`	Reference to the moisture climate zone definition for this climate zone	`Reference`	`:MoistureClimateZone:`

ClimateZoneDefinitions

Name	Description	Data Type	Units	Constraints	Req
`cooling_degree_day_basis_temperature`	Temperature used as the basis for cooling degree-day calculations	`Numeric`	K	`≥0`
`heating_degree_day_basis_temperature`	Temperature used as the basis for heating degree-day calculations	`Numeric`	K	`≥0`
`thermal_climate_zones`	List of thermal climate zone definitions	`[{ThermalClimateZone}]`
`moisture_climate_zones`	List of moisture climate zone definitions	`[{MoistureClimateZone}]`
`climate_zones`	List of climate zones (thermal and moisture)	`[{ClimateZone}]`			$✓$

Verification Rules

None.

Publishing Rules

None.

Application Rules

None.