GIS Application in Sabah Sarawak Gas Pipeline
Group -9
Anshu, Abhishek, Vineet
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Overview
• Problem Statement• Old Way, New Way• Route Influences• Least-Cost Path
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Problem
Select alignment alternatives for optimal cross-country pipeline construction that meet project requirements.
Summarize alignment alternatives to facilitate real dollar cost estimation for early concept development (+/- 50%)
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Old Problem, Old Solution
The Manual Method Small Scale Paper Maps (State Regulatory
Dept, etc…) Hand Delineation(marking out) Terrain Evaluation from Aerial Photographs
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Old Problem, New Solution
The GIS Method Digital Maps Spatial Database (retrieval & storage) Data Manipulation Raster Analysis (Map Algebra, LCP, etc.)
Used properly, GIS methods are faster, more efficient, more
comprehensive, and less expensive than traditional methods.
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Route Influences
Engineering/Cost
BiophysicalSocioeconomic
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What is Least-Cost Path?
LEAST-COST PATHCOST SURFACE LEAST-COST SURFACE(VECTOR)
LEAST-COST PATH(VECTOR)
Land Cover
+ =
COST SURFACE COST SURFACE LEAST-COST Surface
Land Cover Terrain-SlopeAIIM
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Cost-Weighted Surface
LEAST-COST/WEIGHTED
Terrain-Slope
* .60 =
* .40 =
Land Cover
+ =
Influence
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Inserting Dollar Costs
Pipe Summary
• Length• Geometry
Crossing Report
• Type• Subtype• Frequenc
y• Length
Productivity
• -• -• -
Construction
Summary• Labor
Crew• Equipmen
t
Cost Estimate Spread Sheet
GIS Cost Estimating Manual
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SSGP Status
Social objections
Completion extended from 2011 to 2013.
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Thank You
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