The Technical Committee (TC) is responsible for the overall technical activities of IABSE. It promotes, co-ordinates and assesses the activities of all technical groups.

Commissions (C) monitor and coordinate the work done by Task Groups. They are long-term bodies encompassing a broad range of topics organized according to a stage in the life-cycle of a structure, namely:

• Performance & Requirements
• Conceptual design
• Structure analysis & evaluation
• Construction methods & processes
• Existing structures
• Sustainability

Task Groups (TG) are short-term units targeted for well-defined objectives, typically investigation of technical interest or concern. Within a 2-3 year timeline, these groups produce actual deliverables, which may include a publication, a themed conference session or workshop, a suite of papers in 'Structural Engineering International', or other agreed output.