The SIA consists of four professional groups: Architecture, Civil Engineering, Technology/Industry and Ground/Water/Air. Every SIA member belongs to one of these professional groups.

Duties
The professional groups represent the interests of the SIA’s specialist associations in the Society. They contribute to the development and issuing of regulations and standards, handle the professional group’s business interests, and maintain contacts with universities and universities of applied sciences and with institutes and organisations outside Switzerland. Each professional group forms its own professional committee.

Organisation
The members of each professional group in the sections select one member from their group per section to represent them in the relevant professional group council. The corresponding SIA specialist associations also have a certain number of representatives according to their number of members.

The professional group council elects one of its members as chairman or chairwoman and a professional group committee to manage current transactions. Moreover, the professional group council designates the delegates representing the professional group at the Delegates’ Meeting.