Highway Design in 3-D

by Richard D. Sullivan, (M.ASCE), Proj. Mgr.; Hart-Freeland-Roberts, Inc., Brentwood, TN,


Serial Information: Civil Engineering—ASCE, 1992, Vol. 62, Issue 6, Pg. 68-70


Document Type: Feature article

Abstract: Limitations in the flexibility and intelligence of commercial roadway design packages led Hart-Freeland-Roberts, Inc., Brentwood, TN, to write its own highway design software. From the firm's perspective, this custom-designed package has several benefits. It is graphically interactive, uses sound engineering equations and flows in the same manner in which they design. By performing 40-60% of drafting work, it has enabled them to eliminate all low- to mid-level drafting jobs. Another key facet of the program is that the data files created to produce two-dimensional construction documents download into three-dimensional graphic models that can be viewed from any angle, a major help in evaluating different alternatives quickly and catching design mistakes. The article describes the development of the software and its first use in designing a 6.75 mi segment of Interstate 840 in Tennessee.

Subject Headings: Computer aided design | Computer aided drafting | Computer software | Design | Graphic methods | Highways and roads | Three-dimensional models

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