CivilUnits Schema

Angular measurements for rotations, orientations, and angles between objects used in civil engineering

Relative Error: 0.0001

Persistence Unit: RAD

Presentation Formats

• DefaultRealU(2) [ ARC_DEG ]
• AngleDMS

Surface area measurements for land parcels, drainage catchments, hydraulic openings, general surface areas and closed objects

Relative Error: 0.0001

Persistence Unit: SQ_M

Presentation Formats

• DefaultRealU(2) [ SQ_M ]
• DefaultRealU(2) [ SQ_FT ]

Directional bearings for properties, parcels, precision layout

Relative Error: 0.0001

Persistence Unit: RAD

Presentation Formats

• AngleDMS

Vertical height measurements relative to a datum for grading, profiles, and topographic surveys

Relative Error: 0.0001

Persistence Unit: M

Presentation Formats

• DefaultRealU(2) [ M ]
• DefaultRealU(2) [ FT ]

Volumetric flow rate for water, stormwater, and wastewater hydraulic systems

Relative Error: 0.0001

Persistence Unit: CUB_M_PER_SEC

Presentation Formats

• DefaultRealU(2) [ CUB_M_PER_SEC ]
• DefaultRealU(2) [ CUB_FT_PER_SEC ]

Hazen-Williams C coefficient for pressurized pipe flow and water distribution system calculations

Relative Error: 0.0001

Persistence Unit: COEFFICIENT

Presentation Formats

• DefaultRealU [ COEFFICIENT ]

Rainfall intensity and soil infiltration rate measurements for hydrologic and drainage design

Relative Error: 0.0001

Persistence Unit: M_PER_SEC

Presentation Formats

• DefaultRealU(2) [ MM_PER_HR ]
• DefaultRealU(2) [ IN_PER_HR ]

General linear distance measurements for civil infrastructure and spatial layouts

Relative Error: 0.0001

Persistence Unit: M

Presentation Formats

• DefaultRealU(2) [ M ]
• DefaultRealU(2) [ FT ]
• DefaultRealU(2) [ US_SURVEY_FT ]

Short-scale linear measurements for pipe diameters, material thicknesses, and detailed dimensions

Relative Error: 0.0001

Persistence Unit: M

Presentation Formats

• DefaultRealU(1) [ MM ]
• DefaultRealU(1) [ IN ]

Manning's roughness coefficient for open channel and pipe flow calculations

Relative Error: 0.0001

Persistence Unit: COEFFICIENT

Presentation Formats

• DefaultRealU(3) [ COEFFICIENT ]

Percentage values for impervious area calculations, hydraulic efficiency, inlet capture rates, storage properties, and positioning along linear elements

Relative Error: 0.0001

Persistence Unit: DECIMAL_PERCENT

Presentation Formats

• DefaultRealU(2) [ PERCENT ]
• DefaultRealU(4) [ DECIMAL_PERCENT ]

Runoff coefficient for the Rational Method in stormwater drainage calculations

Relative Error: 0.0001

Persistence Unit: COEFFICIENT

Presentation Formats

• DefaultRealU(2) [ COEFFICIENT ]

Horizontal-to-vertical slope ratios for embankments, cuts, and channel side slopes

Relative Error: 0.0001

Persistence Unit: M_HORIZONTAL_PER_M_VERTICAL

Presentation Formats

• DefaultRealU(1) [ HORIZONTAL_PER_VERTICAL ]

Gradient measurements for roadways, channels, pipes, cross-sections, and terrain slopes

Relative Error: 0.0001

Persistence Unit: M_PER_M

Presentation Formats

• DefaultRealU(2) [ PERCENT_SLOPE ]

Linear referencing measurements along alignments for roads, railways, pipes, and linear infrastructure

Relative Error: 0.0001

Persistence Unit: M

Presentation Formats

• StationZ_1000_3 [ M ]
• StationZ_100_2 [ FT ]
• StationZ_100_2 [ US_SURVEY_FT ]
• DefaultRealU(2) [ M ]
• DefaultRealU(2) [ FT ]
• DefaultRealU(2) [ US_SURVEY_FT ]

Speed measurements for vehicles, water flow, and hydraulic velocity calculations

Relative Error: 0.0001

Persistence Unit: M_PER_SEC

Presentation Formats

• DefaultRealU(2) [ KM_PER_HR ]
• DefaultRealU(2) [ MPH ]

Volumetric measurements for earthwork, storage facilities, and material quantities

Relative Error: 0.0001

Persistence Unit: CUB_M

Presentation Formats

• DefaultRealU(2) [ CUB_M ]
• DefaultRealU(2) [ CUB_FT ]

Volume per unit length for earthwork cross-sections, prism calculations, and material quantities along alignments

Relative Error: 0.0001

Persistence Unit: CUB_M_PER_M

Presentation Formats

• DefaultRealU(2) [ CUB_M_PER_M ]
• DefaultRealU(2) [ CUB_FT_PER_FT ]