Steel bridge member resistance: AASHTO compared to other international codes

This presentation contrasts the different approaches to member resistance calculations in AASHTO 8th edition, Eurocode EN1993-2:2006 and Canadian Bridge Design standard CSA S6-14.
An example steel truss footbridge is used to compare resistances and utilizations determined from each Code (on the basis of identical loading). AASHTO is found to be lacking two interaction checks, to be unconservative in one check and over-conservative in another by comparison to the Eurocode - and prohibits the use of some members based on slenderness alone. For its part, the Eurocode is found to be more opaque in expressing one interaction check and to be considerably more voluminous in the calculations required to obtain similar results.
Paper presented at NASCC 2019, St Louis, Missouri, USA, 3-5 April 2019 by Terry Cakebread and Steve Rhodes of LUSAS.
LUSAS steel frame design currently supports the following codes:
AASHTO LRFD 7th Edition (2014)
AASHTO LRFD 8th Edition (2017)
ANSI / AISC-360 (2016)
AS 4100-1998 Steel Structures (Australia)
BS5400-3:2000
CSA S6-14 Canadian Highway Bridge Design Code
EN1993-1-1+A1:2014 - EN 1993-1-1:2005
EN1993-2: 2006
GB50017 - GB50017-2017