project title:
DESCRIPTION
Project Title: Topographic Mapping of Jaldhaka Upazilla under Teesta CAD and Digital Elevation Model Development for flood zoning and land use map for agriculture and urbanization. Presented by Shahrior Al Mamun Md. Humayun Karim Bijoy Kumar Ghosh. Survey Features. - PowerPoint PPT PresentationTRANSCRIPT
Project Title:
Topographic Mapping of Jaldhaka Upazilla under Teesta Topographic Mapping of Jaldhaka Upazilla under Teesta CAD and Digital Elevation Model Development for flood CAD and Digital Elevation Model Development for flood
zoning and land use map for agriculture and urbanizationzoning and land use map for agriculture and urbanization
Presented by
Shahrior Al Mamun
Md. Humayun Karim
Bijoy Kumar Ghosh
Survey FeaturesSurvey Features
Roads, railways, flood embankments and other drainage divides
Alignments Spot height at Intervals not exceeding 300m.
Rivers and Drainage ChannelsAlignmentsX-Sections at Intervals of 500 - 1000m
Settlement areas- homestead/town boundariesBridges, culverts and regulators
GPS Location Detail Structural Information type/Dimension/Vents etc)
Water bodies, swamps and cultivable areasSpot heights on the land at roughly 100m Interval
Roads
RiverBeel
Railway
Base Line Survey by RTK-GPS
Establishment of Geodetic Values of BMs (Lat, Long, Ell. height)
Establishment of Local Datum to BMs (mPWD)
Application of World Geoid Model
Fly Levelling Survey by Optical Level
Development of Local Geoid Model
Temporary Control Point(Northing, Easting, RL)
Temporary Control Points (Lat, Long, Ell. Height) by
RTK-GPS
Concepts of Geodetic SurveyConcepts of Geodetic Survey
H
hN
EllipsoidEarth Surface
Geoid
N = h + H;
N = Geoid Height (from Geoid Model)
‘h = ellipsoid height ( GPS)
H = Orthometric height
World Geoid Model (WGSWorld Geoid Model (WGS-84-84))
Typical Bench Mark PillarTypical Bench Mark Pillar
Baseline Triangulation
Unknown valueUnknown Value
Known Value
RTK Base Line SurveyRTK Base Line Survey
Data collection by GPS for Line Data collection by GPS for Line featurefeature
Data collection by Total stationData collection by Total station
EquipmentEquipment
Total StationTotal Station Leveling MachineLeveling Machine
Digital LevelDigital LevelOptical LevelOptical Level
Digital Echo-sounder 2 nosDigital Echo-sounder 2 nos
Global Positioning System (GPS)Global Positioning System (GPS)Real Time Kinematic GPSReal Time Kinematic GPSProXR Data LoggerProXR Data LoggerDifferential GPSDifferential GPSHandheld GPSHandheld GPS
Communication SystemCommunication SystemWalkei Talkie Walkei Talkie VHFVHFSafecomSafecom
SoftwareSoftware
GPS Data ProcessingGPS Data ProcessingGP SurveyGP SurveyPath FinderPath Finder
GIS Geographic Information SystemGIS Geographic Information SystemPC Arc Info 7.1.2PC Arc Info 7.1.2ArcView 3.1ArcView 3.1
Avenue Programming for (IIS)Avenue Programming for (IIS)
General PurposeGeneral PurposeMicrosoft Office97 suitMicrosoft Office97 suit
Qbasic ProgrammingQbasic Programming
Spot Level at Random Spot Level at Random IntervalInterval
Topographic MapTopographic Map
Digital Elevation Model (DEM)Digital Elevation Model (DEM)
Flood Flood mapmap