geospatial applications in civil engineering
TRANSCRIPT
Sriharsha Rangineni – Senior GIS Engineer
Geospatial
Applications in
Civil Engineering
Agenda
Introduction about Remote Sensing and GIS
Geospatial Applications In Civil Engineering
Data, Tools & Workflow
Data Accessibility
Remote sensing observations provide data on earth’s surface objects in a
spatial format and it has the advantage of synoptic view and large area
coverage.
This Spatial data can be efficiently handled using Geographic Information
System (GIS) and its also allows data integration.
In civil engineering projects, RS and GIS techniques became potential and
necessary tools.
Introduction
Site Investigations
Terrain Mapping and Analysis
Water Resources Engineering
Town Planning And Urban Development
Transportation Network Analysis
Landslide Studies
Applications
Site Investigations by Drone
Drone can vastly reduce the time spent collecting
accurate data
Geo-referenced digital aerial images, with
resolutions as sharp as 1.5 cm (0.6 in) per pixel.
Absolute X, Y, Z accuracy of down to 3 cm (1.2 in) –
without needing Ground Control Points.
Minimizing risk to surveying teams when measuring
sites such as mines, unstable slopes and transport
routes.
Drone technology allows Civil Engineers to work
more efficiently
Site Investigations by Drone
Flight planning
Setting of on-site GCPs
Performing Flight
Import images
Generation of ortho-mosaics
& 3D point clouds
Analysis/production of
deliverables
Final report/deliverable
creation in third-party
software
Terrain Mapping and Analysis
Several common terrain based analyses provide
valuable details of surface properties.
Slope maps are excellent for analyzing and visualizing
landform characteristics.
Aspect maps to assess watershed, forest inventory,
habitat suitability, slope erosion, etc.
Hillshade representations are an effective way to
visualize the 3D nature of land elevations on a 2-D
monitor or paper map.
Viewshed analysis is a valuable visualization technique
that uses to determine those areas that can be seen
from one or more specific locations.
Water Resources Engineering
A watershed analysis is surface analysis
techniques that define topographic divides of
stream networks.
Analyses model give direction of water
movement across the surface.
Stream networks and watershed, sub watersheds
can be determined precisely.
hydrologic and water resources analyses provide
statistical approach of decision making.
Water Resources Engineering
Identify and proper DEM for surface
reconditioning.
Construct profiles using 3D Analyst.
Create and edit feature classes.
Identify and properly execute the sequence of
Hydrology tools required to delineate streams,
catchments and watersheds from a DEM.
Develop a Geometric Network representation of
the stream network from the products of terrain
analysis.
Town Planning & Urban Development
Easy management of housing, sanitation, power, water supply, disposal of
effluents and environmental pollution.
Optimal master plan for development and management of urban settlements
can be prepared.
Monitoring of urban land use changes and future planning, management and
policy making.
Data, Tools & Workflow
1. Find suitable locations for School or Collage By combining spatial data, find
areas that are the most suitable, such as siting a new building or determining
high-risk areas for flooding or landslides.
2. Calculate low cost of travel path surfaces to identify optimum corridors, in
economic and environmental conditions with other objectives.
3. Watershed and stream network delineation based on digital elevation models
using the Hydrology tools in the Geoprocessing toolbox.
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