Techne: Journal of Engineering, Technology and Industrial Applications
Vol. 1 No. 1 (2025): Techne: Journal of Engineering, Technology and Industrial Applications

Geospatial Data Accuracy and Its Impact on Engineering Construction Performance

Dewi Kartikasari (Airlangga University)
Budi Santoso Wirawan Budi Santoso Wirawan (Sepuluh Nopember Institute of Technology)



Article Info

Publish Date
07 Mar 2025

Abstract

This study develops a quantitative, engineering-oriented framework to analyze error propagation across common construction survey workflows and to estimate its impact on quality and performance. A set of generic, case-based scenarios is defined for typical construction tasks: foundation grid and anchor bolt layout, road centerline and grade, pipeline alignment, steel column positioning, and earthwork volume estimation. For each scenario, spatial uncertainty is modeled using covariance-based propagation and Monte Carlo simulation, separating random and systematic error components. Performance is evaluated using engineering-relevant metrics, including probability of tolerance exceedance, expected rework frequency, and error-induced uncertainty in quantities. Results show that (1) control network uncertainty and coordinate transformation bias often dominate final construction errors, even when high-precision instruments are used; (2) vertical uncertainty drives large impacts on earthwork quantities and grade compliance, with asymmetric consequences compared to horizontal error; (3) systematic components, including datum inconsistencies and biased control, produce coherent shifts that are difficult to detect without independent checks and can produce high-cost failures; and (4) hybrid measurement strategies can reduce risk when they explicitly allocate instruments to tasks based on tolerance class and error budget rather than instrument availability. The article concludes with a practical decision framework for accuracy management, emphasizing uncertainty documentation, redundancy, acceptance criteria linked to error budgets, and workflow-level quality assurance. The contributions are intended to support evidence-based construction surveying and to provide applied engineering guidance suitable for industrial practice.

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