01341186

Component

https://doi.org/10.3141/2215-11

http://scholar.google.com...rohe&publication_year=2011

Modern technologies for data collection, data processing, and highway design allow for accurate representation of terrain-specific information to support volume computations for earthwork. These technologies support the representation of existing ground, design, and final as-built surfaces that can be overlaid and differenced to obtain volumes. However, most state highway agencies still use, or even specify, the average-end-area method, which relies on a coarse abstraction of cross sections. Results of an investigation of three highway design and construction data sets indicated, as expected, that when the cross-section interval was decreased, average-end-area volumes approached those computed by the surface-to-surface method. There could be exceptions, explainable by coincidence of the arbitrary cross-section interval and random variability of the terrain. Study results indicated that differences between the two methods could approach 5% when the cross-section interval was 100 ft. On one of the tested data sets, this difference in construction costs represented $112,500 for fill and $95,800 for cut.

01352159

11-2454

English

pp 100-104

2011

Transportation Research Record: Journal of the Transportation Research Board

9780309167291

Print

Figures (7) ; References (5) ; Tables (3)

Calculation; Cross sections; Data files; Earthwork; Estimating; Highway design; Road construction; Volume

Construction costs

Construction; Data and Information Technology; Design; Highways; I20: Design and Planning of Transport Infrastructure; I51: Earthworks and Soil Drainage

TRIS, TRB, ATRI

Feb 17 2011 6:10PM

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