Base Infrastructure Schema > domains > Aec Units ECSchema AecUnits (Design Modeling Units) Schema Alias: AECU Version: 1.0.3 This contains the unit definitions that are use across AE Schemas Table of contents Kind Of Quantities ACCELERATION ANGLE ANGULAR_VELOCITY AREA AREA_FORCE AREA_FORCE_LARGE AREA_FORCE_SMALL AREA_LARGE AREA_MOMENT AREA_MOMENT_LARGE AREA_MOMENT_SMALL AREA_SMALL AREA_SPRING_CONSTANT CURRENT DENSITY DYNAMIC_VISCOSITY ELECTRIC_POTENTIAL ENERGY FLOW FORCE FORCE_DENSITY FORCE_LARGE FORCE_SMALL FREQUENCY HEAT_TRANSFER ILLUMINANCE LENGTH LENGTH_LONG LENGTH_SHORT LINEAR_DENSITY LINEAR_FORCE LINEAR_FORCE_LARGE LINEAR_FORCE_SMALL LINEAR_MOMENT LINEAR_MOMENT_LARGE LINEAR_MOMENT_SMALL LINEAR_ROTATIONAL_SPRING_CONSTANT LINEAR_SPRING_CONSTANT LIQUID_VOLUME LIQUID_VOLUME_LARGE LIQUID_VOLUME_SMALL LUMINOUS_FLUX LUMINOUS_INTENSITY MOMENT MOMENT_LARGE MOMENT_OF_INERTIA MOMENT_SMALL POWER PRESSURE PRESSURE_GRADIENT PROBABILITY PROCESS_PIPING_FLOW PROCESS_PIPING_PRESSURE PROCESS_PIPING_TEMPERATURE ROTATIONAL_SPRING_CONSTANT SPECIFIC_HEAT_CAPACITY SPECIFIC_HEAT_OF_VAPORIZATION SPRING_CONSTANT TEMPERATURE THERMAL_CONDUCTIVITY THERMAL_EXPANSION_COEFFICIENT THERMAL_RESISTANCE TIME VELOCITY VOLUME VOLUME_LARGE VOLUME_SMALL WARPING_CONSTANT WEIGHT Kind Of Quantities ACCELERATION (Acceleration) KindOfQuantity Relative Error: 0.001 Persistence Unit: M_PER_SEC_SQ Presentation Formats DefaultRealU(4) [ M_PER_SEC_SQ ] DefaultRealU(4) [ CM_PER_SEC_SQ ] DefaultRealU(4) [ FT_PER_SEC_SQ ] ANGLE (Angle) KindOfQuantity Relative Error: 0.0001 Persistence Unit: RAD Presentation Formats DefaultRealU(2) [ ARC_DEG ] AngleDMS ANGULAR_VELOCITY (Angular Velocity) KindOfQuantity Relative Error: 0.001 Persistence Unit: RAD_PER_SEC Presentation Formats DefaultRealU(4) [ RAD_PER_SEC ] DefaultRealU(4) [ DEG_PER_SEC ] DefaultRealU(4) [ RPM ] AREA (Area) KindOfQuantity Relative Error: 0.0001 Persistence Unit: SQ_M Presentation Formats DefaultRealU(4) [ SQ_M ] DefaultRealU(4) [ SQ_FT ] AREA_FORCE (Area Force) KindOfQuantity Relative Error: 0.0001 Persistence Unit: PA Presentation Formats DefaultRealU(4) [ KILOPASCAL ] DefaultRealU(4) [ PSF ] AREA_FORCE_LARGE (Area Force Large) KindOfQuantity Relative Error: 0.01 Persistence Unit: PA Presentation Formats DefaultRealU(4) [ MEGAPASCAL ] DefaultRealU(4) [ KSF ] AREA_FORCE_SMALL (Area Force Small) KindOfQuantity Relative Error: 0.0001 Persistence Unit: PA Presentation Formats DefaultRealU(2) [ PA ] DefaultRealU(4) [ PSF ] AREA_LARGE (Large Area) KindOfQuantity Relative Error: 0.01 Persistence Unit: SQ_M Presentation Formats DefaultRealU(4) [ SQ_KM ] DefaultRealU(4) [ SQ_MILE ] AREA_MOMENT (Area Moment) KindOfQuantity Relative Error: 0.0001 Persistence Unit: N_M_PER_SQ_M Presentation Formats DefaultRealU(4) [ KN_M_PER_SQ_M ] DefaultRealU(4) [ LBF_FT_PER_SQ_FT ] AREA_MOMENT_LARGE (Area Moment Large) KindOfQuantity Relative Error: 0.01 Persistence Unit: N_M_PER_SQ_M Presentation Formats DefaultRealU(4) [ MEGAN_M_PER_SQ_M ] DefaultRealU(4) [ KPF_FT_PER_SQ_FT ] AREA_MOMENT_SMALL (Area Moment Small) KindOfQuantity Relative Error: 0.0001 Persistence Unit: N_M_PER_SQ_M Presentation Formats DefaultRealU(4) [ N_M_PER_SQ_M ] DefaultRealU(4) [ LBF_IN_PER_SQ_IN ] AREA_SMALL (Small Area) KindOfQuantity Relative Error: 0.0001 Persistence Unit: SQ_M Presentation Formats DefaultRealU(2) [ SQ_MM ] DefaultRealU(4) [ SQ_IN ] AREA_SPRING_CONSTANT (Area Spring Constant) KindOfQuantity Relative Error: 0.001 Persistence Unit: AREA_SPRING_CONSTANT_N_PER_CUB_M Presentation Formats DefaultRealU(4) [ AREA_SPRING_CONSTANT_N_PER_CUB_M ] DefaultRealU(4) [ AREA_SPRING_CONSTANT_KN_PER_CUB_M ] DefaultRealU(4) [ AREA_SPRING_CONSTANT_KPF_PER_CUB_FT ] CURRENT (Current) KindOfQuantity Relative Error: 0.001 Persistence Unit: A Presentation Formats DefaultRealU(4) [ A ] DefaultRealU(4) [ KILOAMPERE ] DENSITY (Density) KindOfQuantity Relative Error: 0.001 Persistence Unit: KG_PER_CUB_M Presentation Formats DefaultRealU(4) [ KG_PER_CUB_M ] DefaultRealU(4) [ LBM_PER_CUB_FT ] DefaultRealU(4) [ G_PER_CUB_CM ] DefaultRealU(4) [ LBM_PER_CUB_IN ] DefaultRealU(4) [ KIP_PER_CUB_FT ] DYNAMIC_VISCOSITY (Dynamic Viscosity) KindOfQuantity Relative Error: 0.001 Persistence Unit: PA_S Presentation Formats DefaultRealU(4) [ PA_S ] DefaultRealU(4) [ POISE ] DefaultRealU(4) [ CENTIPOISE ] DefaultRealU(4) [ LBM_PER_FT_S ] ELECTRIC_POTENTIAL (Electric Potential) KindOfQuantity Relative Error: 0.001 Persistence Unit: VOLT Presentation Formats DefaultRealU(4) [ VOLT ] DefaultRealU(4) [ KILOVOLT ] DefaultRealU(4) [ MEGAVOLT ] ENERGY (Energy) KindOfQuantity Relative Error: 0.001 Persistence Unit: J Presentation Formats DefaultRealU(4) [ J ] DefaultRealU(4) [ KJ ] DefaultRealU(4) [ BTU ] DefaultRealU(4) [ KWH ] FLOW (Flow Rate) KindOfQuantity Relative Error: 0.00001 Persistence Unit: CUB_M_PER_SEC Presentation Formats DefaultRealU(4) [ LITRE_PER_MIN ] DefaultRealU(4) [ CUB_FT_PER_MIN ] DefaultRealU(4) [ GALLON_PER_MIN ] FORCE (Force) KindOfQuantity Relative Error: 0.0001 Persistence Unit: N Presentation Formats DefaultRealU(4) [ KN ] DefaultRealU(4) [ LBF ] FORCE_DENSITY (Force Density) KindOfQuantity Relative Error: 0.001 Persistence Unit: N_PER_CUB_M Presentation Formats DefaultRealU(4) [ N_PER_CUB_M ] DefaultRealU(4) [ KN_PER_CUB_M ] DefaultRealU(4) [ N_PER_CUB_FT ] DefaultRealU(4) [ KN_PER_CUB_FT ] FORCE_LARGE (Force Large) KindOfQuantity Relative Error: 0.01 Persistence Unit: N Presentation Formats DefaultRealU(4) [ MEGAN ] DefaultRealU(4) [ KPF ] FORCE_SMALL (Force Small) KindOfQuantity Relative Error: 0.0001 Persistence Unit: N Presentation Formats DefaultRealU(2) [ N ] DefaultRealU(4) [ LBF ] FREQUENCY (Frequency) KindOfQuantity Relative Error: 0.001 Persistence Unit: HZ Presentation Formats DefaultRealU(4) [ HZ ] DefaultRealU(4) [ KHZ ] DefaultRealU(4) [ MHZ ] HEAT_TRANSFER (Heat Transfer) KindOfQuantity Relative Error: 0.001 Persistence Unit: W_PER_SQ_M_K Presentation Formats DefaultRealU(4) [ W_PER_SQ_M_K ] DefaultRealU(4) [ W_PER_SQ_M_CELSIUS ] DefaultRealU(4) [ BTU_PER_SQ_FT_HR_FAHRENHEIT ] ILLUMINANCE (Illuminance) KindOfQuantity Relative Error: 0.001 Persistence Unit: LUX Presentation Formats DefaultRealU(4) [ LUX ] DefaultRealU(4) [ LUMEN_PER_SQ_FT ] LENGTH (Length) KindOfQuantity Relative Error: 0.00001 Persistence Unit: M Presentation Formats DefaultRealU(4) [ M ] DefaultRealU(4) [ MM ] AmerFI AmerFI(16) DefaultRealU(4) [ FT ] LENGTH_LONG (Long Length) KindOfQuantity Relative Error: 0.0001 Persistence Unit: M Presentation Formats DefaultRealU(4) [ KM ] DefaultRealU(4) [ M ] AmerFI AmerFI(16) DefaultRealU(4) [ FT ] LENGTH_SHORT (Short Length) KindOfQuantity Relative Error: 0.01 Persistence Unit: M Presentation Formats DefaultRealU(2) [ MM ] DefaultRealU(4) [ CM ] AmerFI AmerFI(16) DefaultRealU(4) [ IN ] LINEAR_DENSITY (Linear Density) KindOfQuantity Relative Error: 0.001 Persistence Unit: KG_PER_M Presentation Formats DefaultRealU(4) [ KG_PER_M ] DefaultRealU(4) [ KG_PER_MM ] DefaultRealU(4) [ LBM_PER_FT ] LINEAR_FORCE (Linear Force) KindOfQuantity Relative Error: 0.0001 Persistence Unit: N_PER_M Presentation Formats DefaultRealU(4) [ KN_PER_M ] DefaultRealU(4) [ LBF_PER_FT ] LINEAR_FORCE_LARGE (Linear Force Large) KindOfQuantity Relative Error: 0.01 Persistence Unit: N_PER_M Presentation Formats DefaultRealU(4) [ MEGAN_PER_M ] DefaultRealU(4) [ KPF_PER_FT ] LINEAR_FORCE_SMALL (Linear Force Small) KindOfQuantity Relative Error: 0.0001 Persistence Unit: N_PER_M Presentation Formats DefaultRealU(2) [ N_PER_M ] DefaultRealU(4) [ LBF_PER_FT ] LINEAR_MOMENT (Linear Moment) KindOfQuantity Relative Error: 0.0001 Persistence Unit: N_M_PER_M Presentation Formats DefaultRealU(4) [ KN_M_PER_M ] DefaultRealU(4) [ LBF_FT_PER_FT ] LINEAR_MOMENT_LARGE (Linear Moment Large) KindOfQuantity Relative Error: 0.01 Persistence Unit: N_M_PER_M Presentation Formats DefaultRealU(4) [ MEGAN_M_PER_M ] DefaultRealU(4) [ KPF_FT_PER_FT ] LINEAR_MOMENT_SMALL (Linear Moment Small) KindOfQuantity Relative Error: 0.0001 Persistence Unit: N_M_PER_M Presentation Formats DefaultRealU(4) [ N_M_PER_M ] DefaultRealU(4) [ LBF_FT_PER_FT ] LINEAR_ROTATIONAL_SPRING_CONSTANT (Linear Rotational Spring Constant) KindOfQuantity Relative Error: 0.001 Persistence Unit: N_PER_RAD Presentation Formats DefaultRealU(4) [ N_PER_RAD ] DefaultRealU(4) [ KN_PER_RAD ] DefaultRealU(4) [ KPF_PER_RAD ] LINEAR_SPRING_CONSTANT (Linear Spring Constant) KindOfQuantity Relative Error: 0.001 Persistence Unit: LINEAR_SPRING_CONSTANT_N_PER_SQ_M Presentation Formats DefaultRealU(4) [ LINEAR_SPRING_CONSTANT_N_PER_SQ_M ] DefaultRealU(4) [ LINEAR_SPRING_CONSTANT_KN_PER_SQ_M ] DefaultRealU(4) [ LINEAR_SPRING_CONSTANT_KPF_PER_SQ_FT ] LIQUID_VOLUME (Liquid Volume) KindOfQuantity Relative Error: 0.0001 Persistence Unit: CUB_M Presentation Formats DefaultRealU(4) [ LITRE ] DefaultRealU(4) [ GALLON ] LIQUID_VOLUME_LARGE (Liquid Large Volume) KindOfQuantity Relative Error: 0.01 Persistence Unit: CUB_M Presentation Formats DefaultRealU(4) [ THOUSAND_LITRE ] DefaultRealU(4) [ THOUSAND_GALLON ] LIQUID_VOLUME_SMALL (Liquid Small Volume) KindOfQuantity Relative Error: 0.0001 Persistence Unit: CUB_M Presentation Formats DefaultRealU(4) [ LITRE ] DefaultRealU(4) [ GALLON ] LUMINOUS_FLUX (Luminous Flux) KindOfQuantity Relative Error: 0.001 Persistence Unit: LUMEN Presentation Formats DefaultRealU(4) [ LUMEN ] LUMINOUS_INTENSITY (Luminous Intensity) KindOfQuantity Relative Error: 0.001 Persistence Unit: CD Presentation Formats DefaultRealU(4) [ CD ] MOMENT (Moment) KindOfQuantity Relative Error: 0.0001 Persistence Unit: N_M Presentation Formats DefaultRealU(4) [ KN_M ] DefaultRealU(4) [ LBF_FT ] MOMENT_LARGE (Moment Large) KindOfQuantity Relative Error: 0.01 Persistence Unit: N_M Presentation Formats DefaultRealU(4) [ MEGAN_M ] DefaultRealU(4) [ KPF_FT ] MOMENT_OF_INERTIA (Moment Of Inertia) KindOfQuantity Relative Error: 0.001 Persistence Unit: M_TO_THE_FOURTH Presentation Formats DefaultRealU(4) [ M_TO_THE_FOURTH ] DefaultRealU(4) [ MM_TO_THE_FOURTH ] DefaultRealU(4) [ CM_TO_THE_FOURTH ] DefaultRealU(4) [ IN_TO_THE_FOURTH ] DefaultRealU(4) [ FT_TO_THE_FOURTH ] MOMENT_SMALL (Moment Small) KindOfQuantity Relative Error: 0.0001 Persistence Unit: N_M Presentation Formats DefaultRealU(2) [ N_M ] DefaultRealU(4) [ LBF_FT ] POWER (Power) KindOfQuantity Relative Error: 0.001 Persistence Unit: W Presentation Formats DefaultRealU(4) [ W ] DefaultRealU(4) [ KW ] DefaultRealU(4) [ MEGAW ] DefaultRealU(4) [ BTU_PER_HR ] DefaultRealU(4) [ KILOBTU_PER_HR ] DefaultRealU(4) [ HP ] PRESSURE (Pressure) KindOfQuantity Relative Error: 0.0001 Persistence Unit: PA Presentation Formats DefaultRealU(4) [ PA ] DefaultRealU(4) [ PSIG ] DefaultRealU(4) [ PSI ] PRESSURE_GRADIENT (Pressure Gradient) KindOfQuantity Relative Error: 0.001 Persistence Unit: PA_PER_M Presentation Formats DefaultRealU(4) [ PA_PER_M ] DefaultRealU(4) [ BAR_PER_KM ] PROBABILITY (Probability) KindOfQuantity Relative Error: 0.001 Persistence Unit: PROBABILITY_FRACTION Presentation Formats DefaultRealU(2) [ PROBABILITY_PERCENT ] PROCESS_PIPING_FLOW (Process Piping Flow Rate) KindOfQuantity Relative Error: 0.00001 Persistence Unit: CUB_M_PER_SEC Presentation Formats DefaultRealU(4) [ LITRE_PER_MIN ] DefaultRealU(4) [ CUB_FT_PER_MIN ] DefaultRealU(4) [ GALLON_PER_MIN ] PROCESS_PIPING_PRESSURE (Process Piping Pressure) KindOfQuantity Relative Error: 0.0001 Persistence Unit: PA Presentation Formats DefaultRealU(4) [ PA ] DefaultRealU(4) [ PSIG ] DefaultRealU(4) [ PSI ] PROCESS_PIPING_TEMPERATURE (Process Piping Temperature) KindOfQuantity Relative Error: 0.01 Persistence Unit: K Presentation Formats DefaultRealU(2) [ CELSIUS ] DefaultRealU(2) [ FAHRENHEIT ] DefaultRealU(4) [ K ] ROTATIONAL_SPRING_CONSTANT (Rotational Spring Constant) KindOfQuantity Relative Error: 0.001 Persistence Unit: N_M_PER_RAD Presentation Formats DefaultRealU(4) [ N_M_PER_RAD ] DefaultRealU(4) [ KN_M_PER_RAD ] DefaultRealU(4) [ KPF_FT_PER_RAD ] SPECIFIC_HEAT_CAPACITY (Specific Heat Capacity) KindOfQuantity Relative Error: 0.001 Persistence Unit: J_PER_KG_K Presentation Formats DefaultRealU(4) [ J_PER_KG_K ] DefaultRealU(4) [ BTU_PER_LBM_RANKINE ] SPECIFIC_HEAT_OF_VAPORIZATION (Specific Heat Of Vaporization) KindOfQuantity Relative Error: 0.001 Persistence Unit: J_PER_KG Presentation Formats DefaultRealU(4) [ J_PER_KG ] DefaultRealU(4) [ KJ_PER_KG ] DefaultRealU(4) [ BTU_PER_LBM ] SPRING_CONSTANT (Spring Constant) KindOfQuantity Relative Error: 0.001 Persistence Unit: SPRING_CONSTANT_N_PER_M Presentation Formats DefaultRealU(4) [ SPRING_CONSTANT_N_PER_M ] DefaultRealU(4) [ SPRING_CONSTANT_KN_PER_M ] DefaultRealU(4) [ SPRING_CONSTANT_KPF_PER_FT ] TEMPERATURE (Temperature) KindOfQuantity Relative Error: 0.01 Persistence Unit: K Presentation Formats DefaultRealU(4) [ CELSIUS ] DefaultRealU(4) [ FAHRENHEIT ] DefaultRealU(4) [ K ] THERMAL_CONDUCTIVITY (Thermal Conductivity) KindOfQuantity Relative Error: 0.001 Persistence Unit: W_PER_M_K Presentation Formats DefaultRealU(4) [ W_PER_M_K ] DefaultRealU(4) [ W_PER_M_C ] DefaultRealU(4) [ BTU_IN_PER_SQ_FT_HR_FAHRENHEIT ] THERMAL_EXPANSION_COEFFICIENT (Thermal Expansion Coefficient) KindOfQuantity Relative Error: 0.001 Persistence Unit: STRAIN_PER_KELVIN Presentation Formats DefaultRealU(4) [ STRAIN_PER_KELVIN ] DefaultRealU(4) [ STRAIN_PER_CELSIUS ] DefaultRealU(4) [ STRAIN_PER_FAHRENHEIT ] THERMAL_RESISTANCE (Thermal Resistance) KindOfQuantity Relative Error: 0.001 Persistence Unit: SQ_M_KELVIN_PER_WATT Presentation Formats DefaultRealU(4) [ SQ_M_KELVIN_PER_WATT ] DefaultRealU(4) [ SQ_M_CELSIUS_PER_WATT ] DefaultRealU(4) [ SQ_FT_HR_FAHRENHEIT_PER_BTU ] TIME (Time) KindOfQuantity Relative Error: 0.001 Persistence Unit: S Presentation Formats DefaultRealU(4) [ S ] DefaultRealU(4) [ MIN ] DefaultRealU(4) [ HR ] DefaultRealU(4) [ DAY ] DefaultRealU(4) [ MS ] VELOCITY (Velocity) KindOfQuantity Relative Error: 0.001 Persistence Unit: M_PER_SEC Presentation Formats DefaultRealU(4) [ M_PER_SEC ] DefaultRealU(4) [ FT_PER_SEC ] DefaultRealU(4) [ MPH ] DefaultRealU(4) [ KM_PER_HR ] VOLUME (Volume) KindOfQuantity Relative Error: 0.0001 Persistence Unit: CUB_M Presentation Formats DefaultRealU(4) [ CUB_M ] DefaultRealU(4) [ CUB_FT ] DefaultRealU(4) [ CUB_YRD ] VOLUME_LARGE (Large Volume) KindOfQuantity Relative Error: 0.01 Persistence Unit: CUB_M Presentation Formats DefaultRealU(4) [ CUB_KM ] DefaultRealU(4) [ CUB_M ] DefaultRealU(4) [ CUB_YRD ] DefaultRealU(4) [ CUB_FT ] VOLUME_SMALL (Small Volume) KindOfQuantity Relative Error: 0.0001 Persistence Unit: CUB_M Presentation Formats DefaultRealU(4) [ CUB_MM ] DefaultRealU(4) [ CUB_CM ] DefaultRealU(4) [ CUB_IN ] DefaultRealU(4) [ CUB_FT ] WARPING_CONSTANT (Warping Constant) KindOfQuantity Relative Error: 0.001 Persistence Unit: M_TO_THE_SIXTH Presentation Formats DefaultRealU(4) [ M_TO_THE_SIXTH ] DefaultRealU(4) [ FT_TO_THE_SIXTH ] WEIGHT (Weight) KindOfQuantity Relative Error: 0.001 Persistence Unit: KG Presentation Formats DefaultRealU(2) [ KG ] DefaultRealU(2) [ LBM ] Last Updated: 15 June, 2021