Discussion of “Ultimate Wind Load Design Gust Wind Speeds in the United States for Use in ASCE-7” by Peter J. Vickery, Dhiraj Wadhera, Jon Galsworthy, Jon A. Peterka, Peter A. Irwin, and Lawrence A. Griffis

sign error in Eq. (16). This was a typographical error in the paper; all calculations were done using the correct sign (+). The writers also thank the discusser for providing a historical account of the derivation of Barbero’s equation, although it should be noted that in his original paper Barbero cited both the Zhan and Ylinen work. In the literature on pultruded profiles, the Barbero and Tomblin (1994) equation is most often cited. It has been shown to represent experimental data. It is used in design codes (CNR 2008) and in textbooks (Bank 2006). The focus of the paper was to investigate appropriate resistance factors and the related reliability that could be used for pultruded columns with a variety of different material properties. The writers also thank the discusser for providing a curve-fitting equation for the experimental data but wish to point out that the approach presented is not curve fitting. It is based on two well-accepted analytical equations for global (Gere and Timoshenko 1997) and local (Kollár 2003) buckling in pultruded profiles and has a single fitting parameter that is calibrated from experimental data for design equations to account for the interaction between local and global buckling. The methodology used is not particularly different from that used in other design codes.