Papers & Articles
Haag Engineering is proud of its 96+ years of engineering expertise. Below is a sampling of some important technical papers Haag Engineering and Research & Testing has published.
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A White Paper: Impact Testing of Impact-Resistant Shingles
Haag Research & Testing Co.06/01/2020 -
Misconceptions of Wind Damage to Asphalt Composition Shingles
Scott Morrison, P.E., Carlos Lopez, Ph.D., P.E., and Jonathan Goode, Ph.D., P.E.01/01/2018 -
Wind Effects on Asphalt Shingles
Timothy P. Marshall, Scott J. Morrison, Richard F. Herzog, and Jeffrey R. Green08/01/2010 -
Field Evaluation of Damage from Wind and Flooding
David Teasdale04/01/2008 -
A White Paper: Hail Damage to Composition Shingles
Haag Engineering Co.04/01/2006 -
Response of Test House to Vibroseis Vibrations and Environmental Forces
David Teasdale, Jack Kiker, Lewis Oriard, Charles Dowding, and Scott Morrison02/01/2006 -
Tower Crane Life Expectancy
Jim D. Wiethorn, P.E., Matthew R. Gardiner, P.E., Anthony E. Bond, P.E., Edward P. Cox, P.E., PhD, and Ray A. King, E.I.T.01/01/2005 -
Hail Damage to Asphalt Roof Shingles
Timothy P. Marshall, Richard Herzog, and Scott Morrison01/01/2004 -
Long-term Effects of Hail Impact on Asphalt Shingles
Scott J. Morrison09/01/1999 -
Protocol for Assessment of Hail-Damaged Roofing
Timothy P. Marshall and Richard F. Herzog09/01/1999