American Journal of Applied Sciences

Influence of Hillside Gradient on Forest Road Cross Section Components in a Loamy Clay Soil

Aidin Parsakhoo, Seyed Ataollah Hosseini, Majid Lotfalian and Hamid Jalilvand

DOI : 10.3844/ajassp.2009.1212.1216

American Journal of Applied Sciences

Volume 6, Issue 6

Pages 1212-1216

Abstract

Problem statement: In this study to evaluate the effects of hillside gradient on forest road cross section components in a loamy clay soil the amount of cut and fill slopes gradient and length, road bed and earthwork width were taken on tangent sections in a lat talar forest roads of Iran. Approach: The objective of this study were: (i) to evaluate the direct effects of hillside gradient on cross section components such as cut and fill slopes, road bed and earthwork width in a loamy clay soil, (ii) to use the model to predict the effect of hillside gradient on cross section components. Results: Results indicated that the regression analysis between hillside gradient and cut slope length had a significant linear relationship (p<0.0001), with equation of Y = 0.046+0.054 X (R2 = 0.60). The equation for the calculation of earthwork width (Y) from hillside gradient was Y = 4.928+0.132 X (R2 = 0.44). A significant linear relationship (p<0.0001), with equation of Y = 0.144×- 2.638 (R2 = 0.64) was found between hillside gradient and fill slope length values. Conclusion: Through analysis of variance it was also found that the hillside gradient had a significant influence (p<0.0001) on the cross section components.

Copyright

© 2009 Aidin Parsakhoo, Seyed Ataollah Hosseini, Majid Lotfalian and Hamid Jalilvand. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.