Mark Ritchie

BSc, MSc, P.Eng. | Principal

Mark’s technical skills and meticulous attention to detail make him a valuable team member. 

Mark specializes in the analysis and design of high-rise lateral force resisting systems, in both steel frames and shear walls. His Master's thesis, "Seismic Resistant Pre-stressed Edge Slab-Column Connections", concentrated on supplementing code provisions for both ACI 318 and CSA 23.3 for the design procedure of edge slab-column connections in pre-stressed two-way slabs. He has co-authored two publications on this topic in the ACI Structural Journal and recently co-authored a discussion in the Canadian Journal of Civil Engineering. 

Mark has worked on the structural design and construction review of a wide variety of technically demanding projects in Canada and the United States. His work includes high rise office and residential towers, parkades, recreation facilities and bridges. Mark also played a key role in the design of Glacier Skywalk which won a World Architecture Award and an Award of Excellence from the Canadian Consulting Engineering Awards. 

Professional Affiliations

  • Association of Professional Engineers and Geoscientists of Alberta (APEGA)
  • Council of Tall Buildings and Urban Habitat


  • Brown, Simon, and Mark Ritchie. "Discussion on 'Necessary changes to CSA A23.3-04 (R2010) relevant to punching shear design for unbalanced moment transfer'." Canadian Journal of Civil Engineering 40(2013): 1009-1013.
  • Ritchie, Mark, et al. "Unbalanced Moment Resistance by Shear in Slab-Column Connections: Experimental Assessment." ACI Structural Journal (Jan-Feb 2006): 74-82.
  • Ritchie, Mark and Amin Ghali. "Seismic-Resistant Connections of Edge Columns with Prestressed Slabs." Structural Journal 102(2005): 314-323.
  • Ritchie, Mark. "Seismic Resistant Pre-stressed Edge Slab Column Connections." Thesis, University of Calgary, 2004.