Pyles, Marvin

Emeritus Professor of Forest Engineering

Email Address: 

Registered Professional Civil Engineer:
California and Oregon

PhD, Geotechnical Engineering, 1981 University of California, Berkeley
MS, Civil Engineering, 1975 Oregon State University
BS, Civil Engineering, 1973 Oregon State University

Areas of Interest: 

Engineering properties of soils, slope stability, hydraulics and hydrology, logging mechanics, forest roads

Current Programs: 

Fish passage at low volume road crossings, fluvial performance of standard bridges, compaction of forest roads

Past Graduate Students: Laura Cummings

  • FE 101: Introduction to Forest Engineering
  • FE 315: Soil Engineering
  • FE 316: Soil Mechanics
  • FE 330: Fluid Mechanics and Hydraulics
  • FE 480: Forest Engineering Practice and Professionalism
Recent Publications: 

Pattison J., K. Boston, and M. Pyles. 2010. Development of a correlation model between a 20-kg Clegg hammer and Field CBR for measuring subgrade strength in forest roads in western Oregon. International Journal of Forest Engineering. 21(1):12-19

Boston, Kevin, Marvin R. Pyles, and Andrea Bord. 2008. “Compaction of Forest Roads in Northwestern Oregon – Room for Improvement.” International Journal of Forest Engineering 19(1):24-28.

Pyles, Marvin R. and Robert A. Douglas. 2007. “Inappropriate productivity measures: the demise of university forestry programs?” Forest Products Journal.

Pyles, Marvin R. and Mari Kramer. 2006. “A Case Study of DEM Based Slope Stability Assessment on Managed Forest Land in the Oregon Coast Range.” Western Journal of Applied Forestry, 21(4):195-102.

House, Matthew R., Marvin R. Pyles, and Dale White. 2005. “Velocity Distributions in Streambed Simulation Culverts Used for Fish Passage.” Journal of the American Water Resources Association [JAWRA], 41(1):209-217.

Pyles, Marvin R., 2005. “Monitoring: Its our Job from Beginning to End.” Proceedings of the COFE, HSU, 2005.

Appt, Jeremy, Arne Skaugset, Marvin Pyles, and Michael Wing. 2003. “Discriminating between Landslide Sites and Adjacent Terrain Using Topographic Variables.” Hydrological Science and Technology, American Institute of Hydrology, Vol. 19, Number 1-4, 2003. pp 363-374.

Kirkham, Tracie, and Marvin Pyles. 2003. “Seasonal Mechanisms of Peak flows and Flood Frequency at Reynolds Creek, Idaho.” Hydrological Science and Technology, American Institute of Hydrology, Vol. 19, Number 1-4, 2003. pp 267-276.

Recent Theses

Toman, Elizabeth. 2007. Reducing sediment production from forest roads during wet-weather use. PhD. Oregon State University. 175 pp.

Reba, Michael. 2002. The design and evaluation of three “Stream Simulation” culverts in south central Oregon. MS. Oregon State University. 161 pp.

Kirkham, Tracie. 2002. Peakflow causative mechanisms and frequencies at Reynolds Creek, southwestern Idaho. MS. Oregon State University. 97 pp.

Appt, Jeremy. 2002. Discriminating between landslide sites and potentially unstable terrain using topographic indicies. MS. Oregon State University. 116 pp.