GeotechTypicalSection

What is a GeotechTypicalSection?

Interval along the alignment/building structure with similar ground conditions, as part of the GeotechSynthesis model that represents the connection between the ground model and the building. Includes key-properties like expected distribution of ground types (reference to GeotechUnits) and baseline-definition of expected ground conditions and potential hazards, and may also include key-information on design like excavation measures, distribution of support types etc.

Realizations

Data model	Concept name	Definition
IFC	GeotechTypicalSection	Interval along the alignment/building structure with similar ground conditions, as part of the GeotechSynthesis model that represents the connection between the ground model and the building. Includes key-properties like expected distribution of ground types (reference to GeotechUnits) and baseline-definition of expected ground conditions and potential hazards, and may also include key-information on design like excavation measures, distribution of support types etc.
OGC LandInfra	FacilityPart	Land and Infrastructure facility, such as a road or bridge. A facility has a life cycle, including planning, design, construction, maintenance, operation, and removal phases The design and construction phases are typically performed as part of a project. There may be multiple such projects during the life cycle of the facility to enable phased construction and incremental improvement.
ISO 19148	FeatureEvent	The FeatureEvent interface is used to linearly reference a feature along a LinearElement and possibly further qualified as applying at an instant in, or during a period of, time.

Note: the GeotechTypicalSection can be seen on different aspect and then have multiple realizations:

• a part of a tunnel (a part of a facility)
• an event along an alignment.

Properties

PropertyName	Definition
ExpGeotechUnit	Representative GeotecUnit expected in the subject typical section
ExpDistGeotechUnits	Expected distribution of project related "geotechnical units" (= ground types) in subject tunnel section
DiscontinuitySettings	Expected Sets of discontinuities, with typical orientation and properties like spacing, persistence etc.
Overburden	Range of overburden (distane from tunnel to ground surface)  in the subject section
GroundwaterDesignPressure	Groundwater pressure to be considered in the design
GroundwaterInflowSum	Groundwater inflow measured or expected durng a certain time span
GroundwaterAgressiveness	Rating of the agressiveness e.g. towards concrete
GroundwaterTemperature	Groundwater temperature observed at specific location or expected in the subject section
Karst	Description of expected or observed karst features
Boulders	Description of expected or observed boulders features
GasType	Type of natural gas occurence in subject section
GasConcentration	Expected concentration of gas to be encountered during excavation
DumpCategory	Project-related category for re-use and storage of the excavated material
Contamination	Expected anthropogenic contaminations
InSituStress	Anisotropic stress regime, with direction and magnitude of principal stresses
Swelling	Expected swelling behaviour
GroundTemperature	Ground temperature expected in the subject section
CloggingPotential	Description or rating of the potential for clogging equipment in sticky ground
AsbestosPotential	Description or rating of the potential presence of asbestos in the ground
HeavyMetalsPotential	Description or rating of the potential presence of heavy metals in the ground
RiskIdentification	Name and Description of the risk
RiskNature	Description of the nature of the risk
RiskSource	Description of the source of the risk related to a specific uncertainty
Event	Occurrence or change of a particular set of circumstances
Likelihood	chance of something happening
Consequences	outcome of an event affecting the objectives
LevelOfRisk	Magnitude of a risk or combination of risks, expressed in terms of the combination of consequences and their likelihood
PreventiveTreatment	Description of the preventive treatment
LevelOfResidualRisk	Description of the preventive treatment
CurativeTreatment	Description of the curative treatment

FAQ

GitHub issue

https://github.com/opengeospatial/Geotech/issues/44