01515062

Component

https://doi.org/10.3141/2433-03

Subsurface explorations are performed to provide necessary information on soil characteristics and properties. Timely completion of the subsurface explorations is important for successful project development and design. Failure to deliver geotechnical information may cause project delay and damage project performance. Previous literature has seldom examined schedule performance and delay of subsurface exploration. This study aimed to evaluate the operational performance of subsurface exploration by analyzing empirical data on 77 subsurface exploration projects collected between October 2009 and June 2011. The delay analysis identified the primary effects on operational performance of subsurface exploration, namely, unclear data requirements, scope change, permitting, and unexpected conditions. A forecasting model to predict project duration from variables such as number of borings, boring types, early performance warnings, driller issues, and risk events is proposed, and a series of preliminary recommendations to mitigate delay risk is suggested.

01552761

14-2169

English

pp 18–26

2014

Transportation Research Record: Journal of the Transportation Research Board

9780309295215

Print

Figures (3) ; References (13) ; Tables (6)

Boring; Construction scheduling; Evaluation and assessment; Forecasting; Geological surveying; Geotechnical engineering; Risk analysis; Soil profiles; Subsoil

Geotechnology; Highways; I42: Soil Mechanics

TRIS, TRB, ATRI

Jan 27 2014 2:46PM

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