ZAG Ljubljana (Zavod za gradbenistvo Slovenije, Slovenian National Building and Civil Engineering Institute) is Slovenia’s national building and civil engineering institute. It was founded by a decree, promulgated by the Government of the Republic of Slovenia on April 21st, 1994, about the reorganization of part of ZRMK Ljubljana (the former Institute for Testing and Research in Materials and Structures) into a governmental research and testing institute. ZAG Ljubljana was entered into Slovenia’s official List of Companies on March 17th, 1995.

ZAG is an independent, impartial and non-profit organization, which fulfils all the requirements of the EEC Council Directive No. 89/106 regarding approval bodies which carry out the testing and attestation of conformity of construction products. Its main activities include:

• certification and attestation of conformity of products, materials and executed works;
• fundamental and applied research in the fields of materials and structures;
• pre-competitive development of new materials;
• development of new methods of testing;
• test, measurements and monitoring of structures and of the external and internal building environment;
• research, measurements and monitoring in the field of the efficient use of energy and renewables;
• engineering tests and analyses;
• revisions of building, civil engineering and technological designs, and of designs for transport devices;
• calibration and verification of measures, standards and reference materials;
• control, calibration and attestation of confirmity of measuring devices, apparatus, testing machines and individual element of industrial systems;
• training of research and technical staff in particular technical fields;
• participation in the preparation of technical codes and standards.