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Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
Fax: (608) 231-9592
Email

 

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James Wacker
James Wacker

James P. Wacker

Engineering Properties of Wood, Wood Based Materials and Structures
Unit: FPL-4714
Research General Engineer
One Gifford Pinchot Drive
Madison, WI
United States
53726-2398

Phone: 608-231-9224
james.p.wacker@usda.gov

Research Interest

  • Investigating innovative inspection tools and techniques
  • Smart bridge technologies to support long-term performance monitoring
  • Design approaches for timber bridge structures


Education

  • University of Wisconsin-Madison, Bachelor Of Science Civil and Environmental Engineering ,

Professional Organizations

  • Transportation Research Board, Friends Of The Committee General Structures Committee (AFF10), Field Testing and Nondestructive Testing Committee (AFF40), Low-Volume Roads Committee (AFB30) (2010 - Current)
  • Forest Products Society (FPS), Member Midwest Section Served as Past Chair for FPS Midwest Section, Served on FPS Awards Committee (2005 - Current)
  • State of Wisconsin, Registered Professional Engineer (2004 - Current)
  • American Society of Civil Engineers - Structural Engineering Institute, Member Timber Bridge Technical Committee Served as Past Chair for Timber Bridge Technical Committee, Served as Past Chair of Bridges Technical Advisory Committee (2003 - Current)
  • American Indian Science and Engineering Society, Member Served as Judge for Student Science Fair Competition (1992 - Current)

Below are the 121 US Forest Service publications sorted by year. You may re-sort the list by: Title, Date Posted, Category, Publication or Year.

Publication Year: 2022
 
Title: UAV-aided bridge inspection protocol through machine learning with improved visibility images
Source: Expert Systems with Applications journal
Author(s) Jeong, Euiseok ; Seo, Junwon ; Wacker, James
Year: 2022   view abstract, download publication »
Publication Year: 2021
 
Title: Development of a reusable timber-concrete-composite system for bridge decks
Source: paper in proceedings
Author(s) Wacker, James; Campos, Joana A.A.; Dias, Alfredo M.P.G.
Year: 2021   view abstract, download publication »
Title: Field evaluation of stress-laminated hardwood timber bridges with extended service life
Source: paper in proceedings
Author(s) Dahlberg, Justin; Wacker, James
Year: 2021   view abstract, download publication »
Title: Grayscale Drone Inspection Image Enhancement Framework for Advanced Bridge Defect Measurement
Source: Transportation Research Record: Journal of the Transportation Research Board
Author(s) Jeong, Euiseok ; Seo, Junwon ; Wacker, James
Year: 2021   view abstract, download publication »
Title: Use of Ground Penetrating Radar in the Evaluation of Wood Structures: A Review
Source: Forests
Author(s) Rodrigues, Brunela Pollastrelli; Senalik, Christopher Adam; Wu, Xi ; Wacker, James
Year: 2021   view abstract, download publication »
Title: Use of wood in buildings and bridges
Source: Chapter 17 in FPL-GTR-282
Author(s) Wacker, James
Year: 2021   view abstract, download publication »
Title: Visual Bridge Damage Measurement Using Drone-Captured Image Quality Optimization
Source: Book chapter
Author(s) Seo, Junwon; Jeong, Euiseok; Wacker, James
Year: 2021   view abstract, download publication »
Publication Year: 2020
 
Title: 100-year performance of timber–concrete composite bridges in the United States
Source: Journal of Bridge Engineering. 25(3): 04020006.
Author(s) Wacker, James P.; Dias, Alfredo M. P. G.; Hosteng, Travis K.
Year: 2020   view abstract, download publication »
Title: Development of cost-competitive timber bridge designs for long-term performance
Source: Report No. MN 2020-16. St. Paul, MN: Minnesota Department of Transportation. 415 p.
Author(s) Brashaw, Brian ; Wacker, James ; Fosnacht, Don ; Aro, Matt ; Young, Matthew ; Vatalaro, Robert
Year: 2020   view abstract, download publication »
Title: Ground-Penetrating Radar Investigation of Salvaged Timber Girders from Bridges Along Route 66 in California
Source: Wood and Fiber Science
Author(s) Wu, Xi ; Senalik, Christopher Adam; Wacker, James P.; Wang, Xiping ; Li, Guanghui
Year: 2020   view abstract, download publication »
Title: Laboratory investigation of cross-laminated timber (CLT) decks for bridge applications
Source: Res. in Prog. FPL-RIP-4719-046. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 2 p.
Author(s) Wacker, James ; Dahlberg, Justin ; Phares, Brent
Year: 2020   view abstract, download publication »
Title: Load testing and assessment of a field demonstration CLT bridge
Source: Res. in Prog. RIP-4719-047. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 2 p.
Author(s) Seo, Junwon ; Wacker, Jim
Year: 2020   view abstract, download publication »
Title: New bridge inspection approach with joint UAV and DIC system
Source: In: Proceedings, Structures congress 2020, ASCE: 349-360.
Author(s) Jeong, Euiseok ; Seo, Junwon ; Wacker, James
Year: 2020   view abstract, download publication »
Title: Object detection of ground-penetrating radar signals using empirical mode decomposition and dynamic time warping
Source: Forests. 11(2): 230
Author(s) Wu, Xi ; Senalik, Christopher Adam; Wacker, James ; Wang, Xiping ; Li, Guanghui
Year: 2020   view abstract, download publication »
Publication Year: 2019
 
Title: Demonstration smart timber bridge – glulam timber bridge on geo-synthetic reinforced soil (GRS) abutments
Source: In: Chen, G.; Alampalli, S. (eds.). Proceedings of the 9th International Conference on Structural Health Monitoring of Intelligent Infrastructure. Rolla, MO: Missouri University of Science and Technology.
Author(s) Hosteng, T.K. ; Wacker, J.P. ; Senalik, C.A. ; Wipf, T.J.
Year: 2019   view abstract, download publication »
Title: Development of a smart timber bridge (phase III): moisture and strain sensor investigation for historic covered bridges
Source: Gen. Tech. Rep. FPL-GTR-268. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory: 1-29.
Author(s) Phares, Brent M.; Pence, Trevor L.; Wacker, James P.; Hosteng, Travis K.
Year: 2019   view abstract, download publication »
Title: Electric resistance tomography and stress wave tomography for decay detection in trees—a comparison study
Source: PeerJ. 7(4): e6444-. https://doi.org/10.7717/peerj.6444.
Author(s) Yue, Xiaoquan ; Wang, Lihai ; Wacker, James P.; Zhu, Zhiming
Year: 2019   view abstract, download publication »
Title: Glued-laminated timber arch bridge inspection using UAV
Source: Proceedings, ASCE Computing in Civil Engineering 2019: 336-342.
Author(s) Seo, Junwon ; Duque, Luis ; Wacker, James
Year: 2019   view abstract, download publication »
Title: Identifying incipient decay in Douglas-fir bridge components using x-ray computerized tomography
Source: In: Wang, X.; Sauter, U.H.; Ross, R.J., eds. 2019. Proceedings: 21st International Nondestructive Testing and Evaluation of Wood Symposium. General Technical Report FPL-GTR-272. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory: 62-70.
Author(s) Senalik, Christopher Adam; Wacker, James ; Wang, Xiping ; Wu, Xi
Year: 2019   view abstract, download publication »
Title: Standard plans for glued-laminated timber bridge superstructures: longitudinal glulam decks, glulam stringer bridges; and transverse glulam decks
Source: Gen. Tech. Rep. FPL-GTR-260. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest products Laboratory: 1-57.
Author(s) Wacker, James P.; Smith, Matthew S.
Year: 2019   view abstract, download publication »
Title: Using ground penetrating radar to classify features within structural timbers
Source: In: Wang, X.; Sauter, U.H.; Ross, R.J., eds. 2019. Proceedings: 21st International Nondestructive Testing and Evaluation of Wood Symposium. General Technical Report FPL-GTR-272. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. pp 502-510.
Author(s) Wu, Xi; Senalik, Christopher Adam; Wacker, James ; Wang, Xiping ; Li, Guanghui
Year: 2019   view abstract, download publication »
Publication Year: 2018
 
Title: Bridge Deterioration Quantification Protocol Using UAV
Source: Journal of Bridge Engineering. 23(10): 1-12.
Author(s) Duque, Luis ; Seo, Junwon ; Wacker, James
Year: 2018   view abstract, download publication »
Title: Drone-enabled bridge inspection methodology and application
Source: Automation in Construction. 94: 112-126.
Author(s) Seo, Junwon ; Duque, Luis ; Wacker, Jim
Year: 2018   view abstract, download publication »
Title: Evaluating the use of drones for timber bridge inspection
Source: Gen. Tech. Rep. FPL-GTR-258. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 1-152.
Author(s) Seo, Junwon ; Wacker, James P.; Duque, Luis
Year: 2018   view abstract, download publication »
Title: Field application of UAS-based bridge inspection
Source: Journal of the Transportation Research Board. 1-10.
Author(s) Seo, Junwon ; Duque, Luis ; Wacker, James P.
Year: 2018   view abstract, download publication »
Title: Synthesis of Unmanned Aerial Vehicle Applications for Infrastructures
Source: Journal of Performance of Constructed Facilities. 32(4): 1-10.
Author(s) Duque, Luis ; Seo, Junwon ; Wacker, James
Year: 2018   view abstract, download publication »
Title: Timber bridge inspection using UAV
Source: In: Proceedings, ASCE structures 2018. Reston, VA: American Society of Civil Engineers: 186-197.
Author(s) Duque, Luis ; Seo, Junwon ; Wacker, James
Year: 2018   view abstract, download publication »
Title: Wear behavior of drill bits in wood drilling resistance measurements
Source: Wood and Fiber Science. 50(2): 154-166.
Author(s) Sharapov, Evgenii ; Wang, Xiping ; Smirnova, Elena ; Wacker, James P.
Year: 2018   view abstract, download publication »
Publication Year: 2017
 
Title: Assessing ability of ground-penetrating radar to detect internal moisture and fungal decay in Douglas-fir beams
Source: In: Wang, X.; Senalik, C.A.; Ross, R.J., eds. Proceedings, 20th international nondestructive testing and evaluation of wood symposium. Gen. Tech. Rep. FPL-GTR-249. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory: 286-300.
Author(s) Senalik, C. Adam; Wacker, James P.; Wang, Xiping ; Rodrigues, Brunella Pollastrelli; Jalinoos, Frank
Year: 2017   view abstract, download publication »
Title: Comparative durability of timber bridges in the USA
Source: In: The international research group on wood protection, Section 2, Test methodology and assessment: Paper prepared for the IRG48 Scientific Conference on Wood Protection. Ghent, Belgium: 1-12.
Author(s) Wacker, James P.; Brashaw, Brian K.
Year: 2017   view abstract, download publication »
Title: Evaluation of bridge components salvaged from historic Route 66 in California
Source: fplrip-4719-038-Wacker-Mikhail-Dizon. 2 p.
Author(s) Wacker, James; Mikhail, Mervat; Dizon, Geoffrey
Year: 2017   view abstract, download publication »
Title: Evaluation of remotely piloted aircraft systems as a bridge inspection tool
Source: fplrip-4719-032-SDSU-Wacker-Seo
Author(s) Wacker, James; Seo, Junwon
Year: 2017   view abstract, download publication »
Title: Investigation of early timber–concrete composite bridges in the United States
Source: In: Proceedings, ICTB 2017, 3rd international conference on timber bridges 2017. Skellefteå, Sweden. 11 p.
Author(s) Wacker, James P.; Dias, Alfredo; Hosteng, Travis K.
Year: 2017   view abstract, download publication »
Title: Smart timber bridge on geosynthetic reinforced soil (GRS) abutments
Source: In: Proceedings, ICTB 2017, 3rd international Conference on timber bridges 2017. Skellefteå, Sweden. 11 p.
Author(s) Senalik, Adam; Wacker, James P.; Hosteng, Travis K.; Hermanson, John
Year: 2017   view abstract, download publication »
Publication Year: 2016
 
Title: Assessing the Ability of Ground-Penetrating Radar to Detect Fungal Decay in Douglas-Fir Beams
Source: 25th Research Symposium, New Orleans (110-116). Columbus, OH: American Society for Nondestructive Testing, Inc. 7 p.
Author(s) Senalik, Christopher Adam; Wacker, James; Wang, Xiping; Jalinoos, F.
Year: 2016   view abstract, download publication »
Title: Effectiveness of Several NDE Technologies in Detecting Moisture Pockets and: Artificial Defects in Sawn Timber and Glulam
Source: 
Author(s) Wacker, James P.; Senalik, Christopher Adam; Wang, Xiping; Jalinoos, Frank
Year: 2016   view abstract, download publication »
Title: Field testing and structural analysis of Burr arch covered bridges in Pennsylvania
Source: WCTE 2016, World Conference on Timber Engineering, August 22-25, 2016, Vienna, Austria.
Author(s) Rammer, Douglas; Wacker, James; Hosteng, Travis; Dahlberg, Justin; Deng, Yaohua
Year: 2016   view abstract, download publication »
Publication Year: 2015
 
Title: A Field Assessment of Timber Highway Bridge Durability in the United States
Source: In: Structures Congress 2015; Proceedings of the 2015 Structures Congress April 23-25, 2015 Portland, Oregon, pp. 278-286.
Author(s) Wacker, J.P.; Brashaw, B.K.; Jalinoos, F.
Year: 2015   view abstract, download publication »
Title: Live-load performance evaluation of historic covered timber bridges in the United States
Source: Journal of Performance of Constructed Facilities, 2016, 30(4).
Author(s) Seo, Junwon; Hosteng, Travis K.; Phares, Brent M.; Wacker, James P.
Year: 2015   view abstract, download publication »
Publication Year: 2014
 
Title: Laboratory investigation of fire protection coatings for creosote-treated timber railroad bridges
Source: The International Research Group on Wood Protection, Section 3, Wood Protecting Chemicals, pp. 2-15; IRG/WP 14-30639; 2014.
Author(s) Clausen, Carol A.; White, Robert H.; Wacker, James P.; Lebow, Stan T.; Dietenberger, Mark A.; Zelinka, Samuel L.; Stark, Nicole M.
Year: 2014   view abstract, download publication »
Title: Service life assessment of timber highway bridges in USA climate zones
Source: World Conference on Timber Engineering, WCTE 2014, Quebec City, Canada August 10-14; 2014; p. 8. Electronic proceedings via internet; 2014.
Author(s) Wacker, James P.; Brashaw, Brian K.; Williamson, Thomas G.; Jones, P. David; Smith, Matthew S.; Hosteng, Travis K.; Strahl, David L.; Coombe, Lola E.; Gopu, V.J.
Year: 2014   view abstract, download publication »
Publication Year: 2013
 
Title: Condition Assessment of Iowa Timber Bridges Using Advanced Inspection Tools
Source: In: Wacker, J.; Krohn, J., eds. Proceedings, 2nd International Conference of Timber Bridges. September 30 - October 2nd, 2013, Las Vegas, Nevada, USA. (Electronic format without page numbers). Leesburg, VA: American Wood Council – Woodworks. (Peer-Reviewed) ID# 0424; 2013; 11 p.
Author(s) Hosteng, Travis; Wacker, James; Phares, Brent
Year: 2013   view abstract, download publication »
Title: Condition Assessment of the Timber Structures of a Century-Old Industrial Building Using a Nondestructive Inspection Procedure
Source: Advanced Materials Research Volume 778, 2013; pp. 840-848.
Author(s) Wang, Xiping; Teder, Marko; Wacker, James
Year: 2013   view abstract, download publication »
Title: Live Load Testing of Historic Covered Timber Bridges
Source: In: Proceedings of the 2nd International Conference of Timber Bridges. September 30 - October 2nd, 2013, Las Vegas, Nevada, USA. (Electronic format without page numbers). Leesburg, VA: American Wood Council – Woodworks. (Peer-Reviewed). ID# 0425. 2013; 11 p.
Author(s) Hosteng, Travis; Wacker, James; Phares, Brent
Year: 2013   view abstract, download publication »
Title: Options for NDE Assessment of Heat and Fire Damaged Wood
Source: USDA Forest Service, Forest Products Laboratory, General Technical Report, FPL-GTR-226. pp. 528-535.
Author(s) White, Robert H.; Kukay, Brian; Wacker, James P.
Year: 2013   view abstract, download publication »
Title: Overview of the National Timber Bridge Inspection Study
Source: USDA Forest Service, Forest Products Laboratory, General Technical Report, FPL-GTR-226. pp. 610-615.
Author(s) Wacker, James P.; Brashaw, Brian K.; Jalinoos, Frank
Year: 2013   view abstract, download publication »
Publication Year: 2012
 
Title: Field investigations of historic covered timber bridges in the USA
Source: In: WCTE Auckland new Zealand, 15-19 July 2012, World Conference on Timber Engineering; pp. 346-355, 2012.
Author(s) Wacker, James; Hosteng, Travis; Phares, Brent
Year: 2012   view abstract, download publication »
Title: Modeling Force Transfer around Openings in Wood-Frame Shear Walls
Source: J. Struct. Eng. 2012.138: pp.1419-1426; 2012.
Author(s) Li, Minghao; Lam, Frank; Yeh, Borjen; Skaggs, Tom; Rammer, Doug; Wacker, James
Year: 2012   view abstract, download publication »
Publication Year: 2011
 
Title: Common questions and concerns from government users of industrial treated wood products
Source: Proceedings, one hundred seventh annual meeting of the American Wood Protection Association ... Fort Lauderdale, Florida, May 15-17, 2011: Volume 107. Birmingham, Ala. : American Wood Protection Association, c2011: p. 218-221.
Author(s) Lebow, Stan; Wacker, James
Year: 2011   view abstract, download publication »
Title: Comparative Analysis of Design Codes for Timber Bridges in Canada, the United States, and Europe
Source: Transportation Research Record: Journal of the Transportation Research Board, No. 2200, Transportation Research Board of the National Academies, Washington, D.C., 2010, pp. 163-168. DOI; 10.3141/2200-19
Author(s) Wacker, James P.; Groenier, James (Scott)
Year: 2011   view abstract, download publication »
Title: Development of a Smart Timber Bridge-A Five-Year Plan
Source: USDA Forest Service, Forest Products Laboratory, General Technical Report, FPL-GTR-195, 2011
Author(s) Phares, Brent M.; Wipf, Terry J.; Deza, Ursula; Wacker, James P.
Year: 2011   view abstract, download publication »
Title: Evaluation of a timber column bent substructure after more than 60 years in-service
Source: Proceedings of the CIMAD11 - 1º Congresso Ibero-LatinoAmericano da Madeira na Construção [Spanish & Latin American Conference on Timber Construction], Coimbra, Portugal, June 7-9, 2011 [electronic resource]. [S.l. : s.n.], 2011: [1 flash drive]: 7 p.
Author(s) Wacker, James P.; Wang, Xiping; Rammer, Douglas R.; Nelson, William J.
Year: 2011   view abstract, download publication »
Title: Evaluation of Force Transfer Around Openings - Experimental and Analytical Studies
Source: USDA Joint Venture Agreement 09-11111133-117 - Form No. M410 © 2011 APA -The Engineered Wood Association. 149 p.
Author(s) Yeh, Borjen; Skaggs, Tom; Lam, Frank; Li, Minghao; Rammer, Douglas; Wacker, James
Year: 2011   view abstract, download publication »
Title: Modelling Force Transfer Around Openings of Full-Scale Shear Walls
Source: CIB-W18/44-15-3; INTERNATIONAL COUNCIL FOR RESEARCH AND INNOVATION IN BUILDING AND CONSTRUCTION, WORKING COMMISSION W18 - TIMBER STRUCTURES, MEETING FORTY FOUR ALGHERO ITALY AUGUST 2011.
Author(s) Skaggs, Tom; Yeh, Borjen; Lam, Frank; Li, Minghao; Rammer, Doug; Wacker, James
Year: 2011   view abstract, download publication »
Title: NDE investigation of the timber foundation in the historic Kennecott Mine Concentration Mill Building
Source: In: Proceedings of the 17th International Nondestructive Testing and Evaluation of Wood Symposium, Volume 2, Sept 14-16, 2011. University of West Hungary, Sopron, Hungary. pp. 513-521. (Edited by Ferenc Divos, Published by the University of West Hungary; ISBN 978-963-9883-83-3, volume 2).
Author(s) Wacker, James P.; Wang, Xiping; Rammer, Douglas R.; Woodward, Bessie M.
Year: 2011   view abstract, download publication »
Publication Year: 2010
 
Title: .Wood Handbook, Wood as an Engineering Material (All Chapters)
Source: Forest Products Laboratory. Wood handbook - Wood as an engineering material. General Technical Report FPL-GTR-190. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory: 508 p. 2010
Author(s) Bergman, Richard; Cai, Zhiyong; Carll, Charlie G.; Clausen, Carol A.; Dietenberger, Mark A.; Falk, Robert H.; Frihart, Charles R.; Glass, Samuel V.; Hunt, Christopher G.; Ibach, Rebecca E.; Kretschmann, David E.; Rammer, Douglas R.; Ross, Robert J.; Star
Year: 2010   view abstract, download publication »
Title: Development of a smart timber bridge girder with fiber optic sensors
Source: In: Proceedings of the international conference on timber bridges. 2010 September 13-1 5. Lillehammer, Norway. Statens Vegvesen--The Norwegian public roads administration. 2010
Author(s) Wacker, Jim; Deza, Ursula; Phares, Brent; Wipf, Terry
Year: 2010   view abstract, download publication »
Title: Development of a Smart Timber Bridge-Moisture Sensor Investigation for Historic Covered Bridges
Source: USDA Forest Service, Forest Products Laboratory, Madison, Wisconsin, Research In Progress RIP-4719-012
Author(s) Wacker, James; Phares, Brent
Year: 2010   view abstract, download publication »
Title: Development of Standard Plans for Glulam Highway Bridges
Source: FPL RIP-4719-011
Author(s) Wacker, James
Year: 2010   view abstract, download publication »
Title: Field investigation of a 100-year-old Timber crib foundation at a historic copper mine
Source: In: Proceedings of the 11th world conference on timber engineering, 2010 June 20-24. Riva Del Garda, Italy. Ario Ceccotti and Jan-Willem van de Kuilen, eds. (CD only, without page numbers).2010
Author(s) Wacker, James P.; Wang, Xiping; Rammer, Douglas R.
Year: 2010   view abstract, download publication »
Title: Full-scale shear wall tests for force transfer around openings
Source: In: Proceedings of the international council for research and innovation in building and construction--working commission W18--timber structures. 2010 Augsut 22-26. Nelson, New Zealand. Karisruhe, Germany: Karisruhe institute of Technology. 9 p. (published on CD excluding page numbers)
Author(s) Skaggs, Tom.; Yeh, Borjen.; Lam, Frank.; Rammer, Doug;.; Wacker, James
Year: 2010   view abstract, download publication »
Title: Nondestructive evaluation of timber highway guardrail posts
Source: In: Proceedings of the 11th world conference on timber engineering, 201 0 June 20-24. Riva Del Garda, Italy. Ariio Ceccotti and Jan Willem van de Kuilen, eds. (CD only, without page numbers). 2010
Author(s) Wacker, James P.; Wang, Xiping; Kretschmann, David E.; Rammer, Douglas R.
Year: 2010   view abstract, download publication »
Title: Overview of the National Historic Covered Bridge Preservation (NHCBP) Program
Source: In: Proceedings of the 2010 ASCE structures congress. 2010 May 12-15. Orlando, FL. Reston, VA: American Society of Civil Engineers. p. 509-518. 2010
Author(s) Wacker, James P.; Duwadi, Sheila Rimal
Year: 2010   view abstract, download publication »
Title: Strength and Warp Testing of Hard Maple Gymnasium Floor Systems
Source: FPL RIP-4719-010
Author(s) Wacker,James; Curullo, Dan
Year: 2010   view abstract, download publication »
Title: Wood Handbook, Chapter 17: Use of Wood in Buildings and Bridges
Source: General Technical Report FPL-GTR-190. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory: 17-1 - 17-13. Chapter 17.
Author(s) Wacker, James P.
Year: 2010   view abstract, download publication »
Publication Year: 2009
 
Title: Design and Understanding of Force Transfer around Openings
Source: FPL RIP-4719-005
Author(s) Yeh,B.J.; Wacker, Jim; Lam, Frank
Year: 2009   view abstract, download publication »
Title: Development of Flexural Vibration Inspection Techniques to Rapidly Assess the Structural Health of Rural Bridge Systems
Source: Brashaw, Brian K.; Vatalaro, Robert; Wang, Xiping; Sarvela, Kevin. 2008. Development of flexural vibration inspection tec1miques to rapidly assess the structural health of rural bridge systems. Publisher: Intelligent Transportation Systems Institute, Center for Transportation Studies, University of Minnesota, Minneapolis, MN. Final report. CTS 08-22. 66 p.
Author(s) Brashaw, Brian K.; Vatalaro, Robert; Wang, Xiping; Sarvela, Kevin; Wacker, James P.
Year: 2009   view abstract, download publication »
Title: Improved Ratings for Covered Bridges Via Load Testing
Source: FPL RIP-4719-004
Author(s) Wacker, James; Phares, Brent
Year: 2009   view abstract, download publication »
Title: Performance of Stress-Laminated Timber Highway Bridges In Cold Climates
Source: In: Proceedings of the 14th conference on cold regions engineering. 2009 August 31-September 2: Duluth, MN: 637-649; 2009
Author(s) Wacker, James P.
Year: 2009   view abstract, download publication »
Publication Year: 2008
 
Title: Condition Assessment of Historic Wood Vessels
Source: In: Proceedings of the 15th International Symposium on Nondestructive Testing of Wood, September 10-12, 2007; Duluth, Minnesota, pp. 223-226; 2008
Author(s) Wacker, James P.; Xiping, Wang; Ross, Robert J.; Brashaw, Brian K.
Year: 2008   view abstract, download publication »
Title: Condition Assessment of Main Structural Members of Steam Schooner WAPAMA
Source: FPL-GTR-177, June 2008
Author(s) Wang, Wacker, Ross, Brashaw
Year: 2008   view abstract, download publication »
Title: Covered Bridges in the United States and the Preservation Program
Source: In: Proceedings of the 10th world conference on timber engineering. Miyazak, Japan; 2008 June 2-5: 8 p; 2008
Author(s) Duwadi, Shelia Rimal; Wacker James P.
Year: 2008   view abstract, download publication »
Title: Designing Timber Bridge Superstructures: A Comparison of US and Canadian Bridge Codes
Source: In: Proceedings of the 2008 structures congress: Cross borders. American Society of Civil Engineers. 2008 April 24-26, Vancouver, BC, Canada. Reson, VA. 9 p.; 2008
Author(s) Groenier, James Scott; Wacker, James P.
Year: 2008   view abstract, download publication »
Title: Enhance bridge performance
Source: Alampalli, Sreenivas; Duwadi Sheila Rimal; Herman, Regan Sentelle; Kleinhans, Danielle D.; Mahmoud, Khaled; Ray, James C.; Wacker, James P.; Yazdani, Nur. 2008. In: Enhance bridge performance. 2008 February 21-22: Reston, VA. The American society of Civil Engineers: 117 p.; 2008
Author(s) Alampalli, Sreenivas; Duwadi Sheila Rimal; Herman, Regan Sentelle; Kleinhans, Danielle D.; Mahmoud, Khaled; Ray, James C.; Wacker, James P.; Yazdani, Nur
Year: 2008   view abstract, download publication »
Title: Feasibility of Rehabilitating Timber Bridges Using Mechanically Fastened FRP Strips
Source: In Proceedings of the 2008 structures congress: Cross borders. American Society of Civil Engineers. 2008 April 24026. Vancouver, BC, Canada. 10 p. Proceedings on CD. 2008
Author(s) Schorer, Alyssa E.; Bank, Lawrence C.; Oliva, Michael G.; Wacker, James P.; Rammer, Douglas R.
Year: 2008   view abstract, download publication »
Title: FEASIBILITY OF REHABILITATING TIMBER BRIDGES WITH MECHANICALLY FASTENED FRP STRIPS
Source: Midwest Regional University Transportation Center, Project 5, 08-02, June 2008
Author(s) Schorer, Bank, Oliva, Wacker, Rammer
Year: 2008   view abstract, download publication »
Publication Year: 2007
 
Title: Designing timber highway bridge superstructures using AASHTO-LRFD specifications
Source: Proceedings of the 2007 Structures Congress : New Horizons and Better Practices, 2007 May 16-19, Long Beach, CA. Reston, VA : ASCE, c2007: [5] pages.
Author(s) Wacker, James P.; Groenier, James S.
Year: 2007   view abstract, download publication »
Title: In Situ Materials and Structural Assessment of Stress-Laminated Deck Bridge Treated with Chromate Copper Arsenate
Source: In: Transportation research record No. 2028: Journal of the Transportation Research Board, Washington, DC: pp. 28-33; 2007
Author(s) Gentry, T. Russell; Wacker, James P.; Brohammer, Karl N.; Wells, John
Year: 2007   view abstract, download publication »
Title: Minimizing corrosive action in timber bridges treated with waterborne preservatives
Source: Proceedings of the 2007 Structures Congress : New Horizons and Better Practices, 2007 May 16-19, Long Beach, CA. Reston, VA : American Society of Civil Engineers, c2007: [5] pages.
Author(s) Zelinka, Samuel L.; Rammer, Douglas R.; Wacker, James P.
Year: 2007   view abstract, download publication »
Title: Monitoring the Performance of Timber Bridges over the Long Term
Source: In: Proceedings of the 2007 Mid-Continent Transportation Research Symposium, Ames, Iowa, August 2007.
Author(s) Wacker, James P.; Joyal Marc R.; Murphy, Joseph F.; Wang, Xiping
Year: 2007   view abstract, download publication »
Publication Year: 2006
 
Title: Assessment and maintenance of a 15 year old stress-laminated timber bridge
Source: Proceedings of the 7th International Conference on Short and Medium Span Bridges 2006, 2006 August 23-25, Montreal, Quebec, Canada. Montreal, Quebec, Canada : Canadian Society for Civil Engineering: pages RE-012-1--RE-012-10.
Author(s) Gentry, T. Russell; Brohammer, Karl N.; Wells, John; Wacker, James P.
Year: 2006   view abstract, download publication »
Title: Estimating bridge stiffness using a forced-vibration technique for timber bridge health monitoring
Source: Proceedings : NDE Conference on Civil Engineering : a joint conference of the 7th Structural Materials Technology: NDE/NDT for Highways and Bridges and the 6th International Symposium on NDT in Civil Engineering, 2006 August 14-18, St. Louis, MO. Columbus
Author(s) Wacker, James P.; Wang, Xiping; Brashaw, Brian; Ross, Robert J.
Year: 2006   view abstract, download publication »
Title: Using NIR spectroscopy to predict weathered wood exposure times
Source: WCTE 2006 : 9th World Conference on Timber Engineering, August 6-10, 2006, Portland, OR, USA : program and abstracts. Portland, Or. : World Conference on Timber Engineering, [2006]: [5] pages.
Author(s) Wang, Xiping; Wacker, James P.
Year: 2006   view abstract, download publication »
Publication Year: 2005
 
Title: Chapter 10:Hardwoods for timber bridges
Source: Undervalued hardwoods for engineered materials and components. Madison, WI : Forest Products Society ; Marquette, MI : Northern Initiative, c2005: Pages 115-134.
Author(s) Wacker, James P.; Cesa, Ed T.
Year: 2005   view abstract, download publication »
Title: Condition assessment of timber bridges. 1, Evaluation of a micro-drilling resistance tool
Source: Gen. Tech. Rep. FPL-GTR-159. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 8 p.
Author(s) Brashaw, Brian K.; Vatalaro, Robert J.; Wacker, James P.; Ross, Robert J.
Year: 2005   view abstract, download publication »
Title: Condition assessment of timber bridges. 2, Evaluation of several stress-wave tools
Source: Gen. Tech. Rep. FPL-GTR-160. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 11 p.
Author(s) Brashaw, Brian K.; Vatalaro, Robert J.; Wacker, James P.; Ross, Robert J.
Year: 2005   view abstract, download publication »
Title: Development of flexural vibration inspection techniques to rapidly assess the structural health of timber bridge systems
Source: Proceedings of the 14th International Symposium on Nondestructive Testing of Wood : May 2-4, 2005, University of Applied Sciences, Eberswalde, Germany. Aachen, Germany : Shaker Verlag, 2005: ISBN: 3832239499: pages 113-121.
Author(s) Wang, Xiping; Wacker, James P.; Ross, Robert J.; Brashaw, Brian K.; Vatalaro, Robert
Year: 2005   view abstract, download publication »
Title: Hardwoods for timber bridges
Source: Undervalued hardwoods for engineered materials and components. Madison, WI : Forest Products Society ; Marquette, MI : Northern Initiative, c2005: Pages 115-134.
Author(s) Wacker, James P.; Cesa, Ed T.
Year: 2005   view abstract, download publication »
Title: Hardwoods for timber bridges : a national program emphasis by the USDA Forest Service
Source: Wood design focus. Vol. 15, no. 2 (summer 2005): p. 7-10.
Author(s) Wacker, James P.; Cesa, Ed
Year: 2005   view abstract, download publication »
Title: Kings Covered Bridge rehabilitation, Somerset County, PA
Source: Proceedings of the 2005 structures congress, 2005 April 20-24, New York, NY. New York, NY : The Structural Engineering Institute of the American Society of Civil Engineers, 2005: [10] pages.
Author(s) Collins, William J.; Fischetti, David C.; Graton, Arnold M. Jr.; Lichvar, Len; Diehl, Branden; Wacker, James P.; Cesa, Ed; Stoltz, Ed; Kemp, Emory L.; Petro, Samer H.; Buckwalter, Leon; McNamara, John
Year: 2005   view abstract, download publication »
Title: Nondestructive assessment of single-span timber bridges using a vibration- based method
Source: Res. Pap. FPL-RP-627. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 15 p.
Author(s) Wang, Xiping; Wacker, James P.; Morison, Angus M.; Forsman, John W.; Erickson, John R.; Ross, Robert J.
Year: 2005   view abstract, download publication »
Title: Nondestructive assessment of timber bridges using a vibration-based method
Source: Proceedings of the 2005 structures congress, 2005 April 20-24, New York, NY. New York, NY : The Structural Engineering Institute of the American Society of Civil Engineers, 2005: [12] pages.
Author(s) Wang, Xiping; Wacker, James P.; Ross, Robert J.; Brashaw, Brian K.
Year: 2005   view abstract, download publication »
Publication Year: 2004
 
Title: Field performance of stress-laminated highway bridges constructed with glued laminated timber
Source: Proceedings 2004 Structures Congress : Building on the Past, Securing the Future, 2004 May 22-26, Nashville, TN. Washington, DC : American Society of Civil Engineers, 2004: pages 1-7.
Author(s) Wacker, J.P.
Year: 2004   view abstract, download publication »
Title: Long-term performance monitoring of hardwood timber bridges in Pennsylvania
Source: Res. Pap. FPL-RP-612. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, 2004. 56 pages
Author(s) Wacker, James P.; Calil, Carlito, Jr.; Hislop, Lola E.; Hilbrich Lee, Paula D.; Kainz, James A.
Year: 2004   view abstract, download publication »
Title: Pennsylvania hardwood timber bridges : field performance after 10 years
Source: Proceedings of the Structural Materials Technology VI, an NDT Conference, 14-17 September 2004, Buffalo, New York, USA. American Society for Nondestructive Testing. pp 222-227.
Author(s) Wacker, James P.; Calil, Carlito
Year: 2004   view abstract, download publication »
Title: Recent trends in preservative treatments for timber bridges
Source: Wood design focus. (Summer 2004): Pages 17-20
Author(s) Wacker, James P.
Year: 2004   view abstract, download publication »
Publication Year: 2003
 
Title: Cold Temperature Effects on Stress-Laminated Timber Bridges--A Laboratory Study
Source: FPL-RP-605, February 2003; Forest Products Laboratory Research Paper
Author(s) Wacker, James P.
Year: 2003   view abstract, download publication »
Title: Creosote retention levels of timber highway bridge superstructures in Michigan's Lower Peninsula.
Source: Res. Note FPL-0289. Madison, WI : U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory, 2003. 17 pages.
Author(s) Wacker, James P.; Crawford, Douglas M.; Eriksson, Merv O.
Year: 2003   view abstract, download publication »
Title: Extending service life of timber bridges with preservatives
Source: Proceedings of the 19th U.S.-Japan Bridge Engineering Workshop : UJNR Panel on Wind and Seismic Effects : Tsukuba, Japan, October 27-30, 2003. Tsukuba-shi, Ibaraki-Ken, Japan : Public Works Research Institute, 2003. Technical memorandum (PWRI) ; no. 3902:
Author(s) Wacker, James P.; Crawford, Douglas M.
Year: 2003   view abstract, download publication »
Publication Year: 2001
 
Title: Analysis of thermal change in stress-laminated timber bridge decks
Source: FPL-RP-598, May 2001; Forest Products Laboratory Research Paper
Author(s) Kainz, James A.; Wacker, James P.; Ritter, Micheal A.; Bishop, Stan
Year: 2001   view abstract, download publication »
Title: Field performance of timber bridges--21. Humphrey stress-laminated T-beam bridge
Source: FPL-RP-597, June 2001; Forest Products Laboratory Research Paper
Author(s) Kainz, James A.; Wacker, James P.; Ritter, Micheal A.; Bishop, Stan
Year: 2001   view abstract, download publication »
Title: Standard plans for timber bridge superstructures
Source: Gen. Tech. Rep. FPL-GTR-125. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 53 p.
Author(s) Wacker, James P.; Smith, Matthew S.
Year: 2001   view abstract, download publication »
Publication Year: 1998
 
Title: Field performance of timber bridges. 12, Christian Hollow stress-laminated box-beam bridge
Source: (Research paper FPL-RP-560):17 p. : ill., maps ; 28 cm.
Author(s) Wacker, J. P.; Catherman, S. C.; Winnett, R. G.
Year: 1998   view abstract, download publication »
Title: Field performance of timber bridges. 17, Ciphers stress-laminated deck bridge
Source: (Research paper FPL-RP-572):16 p. : ill., maps ; 28 cm.
Author(s) Wacker, James P.; Kainz, James A.; Ritter, Michael A.
Year: 1998   view abstract, download publication »
Title: In Situ Performance of Stress-Laminated Timber Bridge Decks
Source: In: Proceedings of hte SEM Spring Conference on Experimental and Applied Mechanics, June 1-3, 1998; pp- 265-267
Author(s) Kainz, James A.; Wacker, James P.; Ritter, Micheal A.
Year: 1998   view abstract, download publication »
Publication Year: 1997
 
Title: Field performance of timber bridges. 11, Spearfish Creek stress-laminated box-beam bridge
Source: (Research paper FPL-RP-556):17 p. : ill., maps ; 28 cm.
Author(s) Wacker, J. P.; Ritter, M. A.; Stanfill-McMillan, K.
Year: 1997   view abstract, download publication »
Publication Year: 1996
 
Title: Cold Temperature Effects on Stress-Laminated Timber Bridges
Source: Ritter, Michael A.; Duwadi, Sheila Rimal; Lee, Paula D. Hilbrich, eds. 1996. National conference on wood transportation structures. Gen. Tech. Rep. FPL-GTR-94. Madison, Wl: USDA, Forest Service, Forest Products Laboratory: 232-238.
Author(s) Wacker, James P.; Seavy, Robert; Erickson, Robert
Year: 1996   view abstract, download publication »
Title: Field performance of timber bridges. 10, Sanborn Brook stress-laminated deck bridge
Source: (Research paper FPL-RP-555):24 p. : ill., maps ; 28 cm.
Author(s) Hilbrich Lee, P. D.; Wacker, J. P.; Ritter, M. A.
Year: 1996   view abstract, download publication »
Title: Field performance of timber bridges. 8, Lynches Woods Park stress-laminated deck bridge
Source: (Research paper FPL-RP-551):17 p. : ill., maps ; 28 cm.
Author(s) Wacker, J. P.; Ritter, M. A.; Conger, D.
Year: 1996   view abstract, download publication »
Title: Field performance of timber bridges. 9, Big Erick`s stress-laminated deck bridge
Source: (Research paper FPL-RP-552):24 p. : ill., maps ; 28 cm.
Author(s) Kainz, J. A.; Wacker, J. P.; Nelson, M.
Year: 1996   view abstract, download publication »
Title: Standard Plans for Timber Highway Structures
Source: National conference on wood transportation structures. Gen. Tech. Rep. FPL-GTR-94. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory , October 1996 Pp.344-350
Author(s) Hilbrich Lee, Paula D.; Wacker, James P.
Year: 1996   view abstract, download publication »
Publication Year: 1995
 
Title: Design, Construction, and Evalution of Timber Bridge Constructed of Cottonwood Lumber
Source: Proc 4th International bridge engineering conference; 1995 August 28-30; San Francisco, CA
Author(s) Ritter, M.A.; Wacker, J.P.; Tice, E.D.
Year: 1995   view abstract, download publication »
Title: Field performance of stress-laminated timber bridges on low-volume roads
Source: Proceedings of the 6th International Conference on Low-Volume Roads, 1995 June 25-29, Minneapolis, MN. Washington, DC : National Academy Press, 1995.:p. 347-356.
Author(s) Ritter, M. A.; Wacker, J. P.; Duwadi, S. R.
Year: 1995   view abstract, download publication »
Title: Field Performance of Timber Bridges 2. Cooper Creek Stress-Laminated Deck Bridge
Source: FPL-RP-536, April 1995; Forest Products Laboratory Research Paper
Author(s) Ritter, Micheal A.; Wacker, James P.; Tice, Everett D.
Year: 1995   view abstract, download publication »
Title: Field performance of timber bridges. 4, Graves Crossing stress-laminated deck bridge
Source: (Research paper FPL-RP-539):17 p. : ill., maps ; 28 cm.
Author(s) Wacker, J. P.; Ritter, M. A.
Year: 1995   view abstract, download publication »
Title: Field performance of timber bridges: 3. Birchlog Run and Tumbling Rock Run stress-laminated deck bridges
Source: FPL-RP-538, April 1995; Forest Products Laboratory Research Paper
Author(s) Wacker, James P.; Ritter, Micheal A.
Year: 1995   view abstract, download publication »
Publication Year: 1993
 
Title: Development and Evaluation of the Teal River Stress-Laminated Glulam Bridge
Source: Transportation Research Record 1426, 1993; pp. 27-35.
Author(s) Ritter, Michael A.; Wacker, James P.; Stanfill-McMillan, Kim; Kainz, James A.
Year: 1993   view abstract, download publication »
Publication Year: 1992
 
Title: Field Performance of Timber Bridges 1. Teal River Stress-Laminated Deck Bridge
Source: FPL-RP-515, December 1992; Forest Products Laboratory Research Paper
Author(s) Wacker, James P.; Ritter, Micheal A.
Year: 1992   view abstract, download publication »
Publication Year: 1991
 
Title: METHODS FOR ASSESSING THE FIELD PERFORMANCE OF STRESS-LAMINATED TIMBER BRIDGES
Source: Proceedings of the 1991 International timber engineering conference
Author(s) Ritter, Michael A.; Geske, Earl A.; McCutcheon, William J.; Moody, Russell, C.; Wacker, James P.; Mason, Lola E.
Year: 1991   view abstract, download publication »
Publication Year: 1990
 
Title: Performance of Stress-Laminated Bridges
Source: Wood Design Focus, Volume1, Number 3; pp.12-16; 1990
Author(s) Ritter, Micheal A.; Geske, Earl A.; Mason, Lola; McCutcheon, Williams J.; Moody, Russell C.; Wacker, James
Year: 1990   view abstract, download publication »
Title: Performance of Stress-Laminated Bridges, Ontario Highway Bridge Design Code
Source: Wood Design Focus, Volume 1, Number 3, Fall 1990; pp. 12-16; 1990
Author(s) Ritter, Micheal A.; Geske, Earl A.; Mason, Lola; McCutcheon, Williams J.; Moody, Russell C.; Wacker, James
Year: 1990   view abstract, download publication »
 
Publication Year: 2020
Profile of demonstration bridges
Highlight ID: 1662		Durable, Cost-Effective Timber Bridges

Timber bridge design advances support construction of cost-effective and durable timber bridges. ...
 
Publication Year: 2018
Typical timber bridge example. USDA Forest Service
Highlight ID: 1309		Laboratory Evaluation of Salvaged Bridge Girders from U.S. Route 66

Timber bridges have been in-service for nearly nine decades along Southern California's Historic Route 66 National Trails Highway. Several untreated sawn timber stringers were recently salvaged and transported to the FPL for a laboratory investigatio ...
 
Publication Year: 2017
Researcher Xiping Wang inspects field exposed specimens with ground penetrating radar.
Highlight ID: 1285		Assessing the ability of ground-penetrating radar to detect internal moisture and fungal decay

Internal moisture and fungal decay are detected in structural bridge members using ground penetrating radar for faster evaluation of timber bridges. ...
The Catt Bridge is located in Buchanan County, Iowa, and is supported by GRS abutments and equipped with a smart bridge system.
Highlight ID: 1281		Smart timber bridge on geo-synthetic reinforced soil abutments

Forest Service researchers partnered in the construction and monitoring of an innovative bridge abutment system, developed to be lower cost and faster to construct with improved performance and durability as compared to other abutments. In addition, ...
 
Publication Year: 2013
The Cox Ford Bridge in Parke County, Indiana, has a Burr-arch truss configuration. James Wacker, USDA Forest Service
Highlight ID: 433		Keeping America's Historic Covered Bridges Safe for Vehicular Traffic

The Forest Products Laboratory, in partnership with the Federal Highway Administration and the National Park Service is sponsoring a comprehensive research program on Historic Covered Timber Bridges in the United States. This national program's main ...
Bridge No. 738 located in Yakima County, Washington, remains in satisfactory condition after 75 years of service. James Wacker, USDA Forest Service
Highlight ID: 434		Scientists Study True Longevity of Timber Highway Bridges

Do timber bridges last longer than concrete or steel bridges in similar climates This national project aims to generate more reliable data about the true longevity of timber bridges in the U.S. and allows for more accurate life-cycle assessments in t ...
 
Publication Year: 2011
The Portland Mills Covered Bridge in Parke County, Indiana, has a Burr-Archtruss design. James Wacker, Forest Service
Highlight ID: 284		America's Historic Covered Timber Bridges

Covered wooden bridges proliferated in the United States in the mid-nineteenth century. Today an estimated 800 covered bridge structures remain as cherished links to the technological heritage of the United States. The through-truss designs vary from ...
 
Publication Year: 2010

Highlight ID: 170		Centennial Edition, Wood Handbook—Wood as an Engineering Material

The Wood Handbook—Wood as an Engineering Material serves as a primary reference document for a wide variety of users-from the general public through architects and design engineers who use wood in highly engineered structures. ...
TitleDate Posted
A New Approach to Bridge Inspection and Safety

Unmanned aerial vehicle - Digital image correlation (UAV-DIC) System Forest Products Laboratory’s (FPL) researcher James Wacker with collaborators from the Department of Civil Environmental Engineering, South Dakota State University are working on a new approach to inspecting bridges that will...

06-09-2020
Salvaging an American Icon with Ground-Penetrating Radar

Two Route 66 signs on the road at California Mojave desert highway – By AR Pictures Imagine being able to look straight into a wood beam and know its structural integrity. It’s almost like a super power, except its really just amazing science—science that Forest Products Laboratory (FPL...

04-14-2020
glulambridgeBetter Bridges:

The United States is facing an infrastructure crisis. According to the American Road & Transportation Builders Association, over 61,000 bridges in America are structurally deficient. Although expensive to maintain, particularly in these tough economic times, when these vital pieces of our transporta...

08-31-2015