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Alkass, S and Harris, F (1988) Expert System for Earthmoving Equipment Selection in Road Construction. Journal of Construction Engineering and Management, 114(03), 426–40.
Chang, L, Hancher, D E, Napier, T R and Kapolnek, R G (1988) Methods to Identify and Assess New Building Technology. Journal of Construction Engineering and Management, 114(03), 408–25.
Diekmann, J E and Kraiem, Z (1988) Explanation of Construction Engineering Knowledge in Expert Systems. Journal of Construction Engineering and Management, 114(03), 364–89.
Hagerty, D J, Schmitt, N G and Vandevelde, G T (1988) Shot‐Rock Fill Construction: Case History. Journal of Construction Engineering and Management, 114(03), 489–502.
Kangari, R, Pruitt, J D and Cheema, T S (1988) Slipforming IBM Tower. Journal of Construction Engineering and Management, 114(03), 472–88.
Karaftath, L L (1988) Rolling Resistance of Off‐Road Vehicles. Journal of Construction Engineering and Management, 114(03), 458–71.
- Type: Journal Article
- Keywords: Vehicles; Earthmoving; Wheels;
- ISBN/ISSN: 0733-9364
- URL: https://doi.org/10.1061/(ASCE)0733-9364(1988)114:3(458)
- Abstract:
The rolling resistance (RR) of vehicles operating off‐road is, despite its significance, an uncertain factor in haul‐time and productivity estimates. The rule‐of‐thumb formula used for estimating the RR consistently underestimates the RR of free‐rolling (nondriven) tires. The RR of driven tires is shown to vary considerably with the applied torque; at high torque (in low gears) it may be several times greater than the RR of free‐rolling tires. This increase of the RR may result in a decrease in productivity, or at worst, in the immobilization of off‐road vehicles. The use of an analytical tire‐soil interaction model is a rational method of estimating the RR of both free‐rolling and driven tires and, by summation, the total RR of wheeled off‐road vehicles. Performance data sets consisting of rimpull and RR values for various values of slip, obtained from this model, present a realistic simulation of the interaction between vehicle and soil. Their use in conjunction with rimpull‐speed relations supplied by manufacturers improves haul‐time calculations and allows the performance of unbiased comparative analyses of various candidate vehicles for a variety of routing and soil conditions.
Koehn, E and Manuel, J (1988) Variation in Work Improvement Potential for Small/Medium Contractors. Journal of Construction Engineering and Management, 114(03), 505–9.
Levitt, R E, Kartam, N A and Kunz, J C (1988) Artificial Intelligence Techniques for Generating Construction Project Plans. Journal of Construction Engineering and Management, 114(03), 329–43.
Stewart, W S and Tatum, C B (1988) Segmental Placement of Renton Outfall: Construction Innovation. Journal of Construction Engineering and Management, 114(03), 390–407.
Tatum, C B (1988) Classification System for Construction Technology. Journal of Construction Engineering and Management, 114(03), 344–63.
Tomlinson, D P and Rhomberg, E J (1988) Contract Officer in Military Service Contracts. Journal of Construction Engineering and Management, 114(03), 441–57.