• Industry


  • Services offered

    Engineer - Structural

  • Has Experience with these building types:

    Assembly (Worship, Restaurant, Theater), Business (Office), Civic (Recreational), Educational, Factory/Industrial (warehouse, storage, parking, etc.), Government, Hotel/Motel, Institutional, Mercantile (Retail), Mixed-Use, Multi-Family (Apartments, Condos), Student Housing

  • Has Experience with these material types:

    Mass Timber, Cross-Laminated Timber (CLT), Nail-Laminated Timber (NLT), Dowel-Laminated Timber (DLT), Glue-Laminated Timber (GLT or glulam), Heavy Timber Decking, Hybrid (wood with steel or concrete), Structural Composite Lumber (e.g. LVL and LSL), Wood-Concrete Composite Systems

  • Has experience with these construction types:

    I-A, I-B, II-A, II-B, III-A, III-B, IV-B, IV-HT, V-A, V-B

badges earned


Coughlin Porter Lundeen is an active proponent of mass timber development, and one of the few engineering firms in the Pacific Northwest with locally built CLT structures. Chris Duvall is a principal at Coughlin Porter Lundeen, which he joined over 20 years ago. He has contributed to various studies concerning the use of CLT and other mass timber materials in lieu of concrete and steel for a variety of building types. He has successfully proposed alternative building materials to local jurisdictions for structural systems not pre-approved by the building code, such as timber-concrete composite floor systems. He continues to push mass timber research and applications forward; participates on the AIA Seattle Mass Timber Committee and is an active member of the American Wood Council, and has several mass timber projects currently underway.


Work Experience