In the context of the security of its works and in order to meet the legal obligations, GRDF has set up cartographic production markets as part of the works of which it is the contracting authority, as well as georeferencing and resetting markets. plans, detection of existing gas works. The contract covers the controls of these services.
- the control of topography work:
- on the planimetric and altimetric accuracy of the topographic surveys of the backgrounds,
- on the qualification of the precision of the georeferencing of a plane following a Helmert transformation,
- on the planimetric and altimetric accuracy of the topographic surveys of the networks,
- on the quality, completeness and coherence of the representation of the plan funds,
- the control of mapping work,
- compliance with V2 + and V3 standards,
- quality of the report of the works,
- compliance with assembly rules,
- inter-scale control,
- the control of the georeferencing of structures by detection of buried markers,
- the detection control of gas works.
- the control of topography work:
- on the planimetric and altimetric accuracy of the topographic surveys of the backgrounds,
- on the qualification of the precision of the georeferencing of a plane following a Helmert transformation,
- on the planimetric and altimetric accuracy of the topographic surveys of the networks,
- on the quality, completeness and coherence of the representation of the plan funds,
- the control of mapping work,
- compliance with V2 + and V3 standards,
- quality of the report of the works,
- compliance with assembly rules,
- inter-scale control,
- the control of the georeferencing of structures by detection of buried markers,
- the detection control of gas works.
- the control of topography work:
- on the planimetric and altimetric accuracy of the topographic surveys of the backgrounds,
- on the qualification of the precision of the georeferencing of a plane following a Helmert transformation,
- on the planimetric and altimetric accuracy of the topographic surveys of the networks,
- on the quality, completeness and coherence of the representation of the plan funds,
- the control of mapping work,
- compliance with V2 + and V3 standards,
- quality of the report of the works,
- compliance with assembly rules,
- inter-scale control,
- the control of the georeferencing of structures by detection of buried markers,
- the detection control of gas works.
- the control of topography work:
- on the planimetric and altimetric accuracy of the topographic surveys of the backgrounds,
- on the qualification of the precision of the georeferencing of a plane following a Helmert transformation,
- on the planimetric and altimetric accuracy of the topographic surveys of the networks,
- on the quality, completeness and coherence of the representation of the plan funds,
- the control of mapping work,
- compliance with V2 + and V3 standards,
- quality of the report of the works,
- compliance with assembly rules,
- inter-scale control,
- the control of the georeferencing of structures by detection of buried markers,
- the detection control of gas works.
- the control of topography work:
- on the planimetric and altimetric accuracy of the topographic surveys of the backgrounds,
- on the qualification of the precision of the georeferencing of a plane following a Helmert transformation,
- on the planimetric and altimetric accuracy of the topographic surveys of the networks,
- on the quality, completeness and coherence of the representation of the plan funds,
- the control of mapping work,
- compliance with V2 + and V3 standards,
- quality of the report of the works,
- compliance with assembly rules,
- inter-scale control,
- the control of the georeferencing of structures by detection of buried markers,
- the detection control of gas works.
- the control of topography work:
- on the planimetric and altimetric accuracy of the topographic surveys of the backgrounds,
- on the qualification of the precision of the georeferencing of a plane following a Helmert transformation,
- on the planimetric and altimetric accuracy of the topographic surveys of the networks,
- on the quality, completeness and coherence of the representation of the plan funds,
- the control of mapping work,
- compliance with V2 + and V3 standards,
- quality of the report of the works,
- compliance with assembly rules,
- inter-scale control,
- the control of the georeferencing of structures by detection of buried markers,
- the detection control of gas works.