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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