The SIA has many operative committees, with almost 200 of these working in the area of standards alone. As the body in overall charge of that domain, the Central Committee for Codes (ZN) and the Central Committee for Regulations (ZO) have three subordinate sectoral committees which direct individual standards committees and working groups:
- the Structural Design Standards (KTN);
- the Structural Building Standards (KH);
- the Building Services and Energy Standards (KGE).
Other committees of note are the professional groups' Professional Committees, the Swiss Professional Committee (SK) which is independent of those committees and acts as an appeals body, the Training Committee, the SIA Expert Council for Intellectual Property Law (FI), the SIA Expert Council for Energy (FRE) and the Audit Committee (RPK).
The Women and the SIA Committee acts as the SIA's think-tank on gender issues.