The aim of this paper is the determination of testing configurations and the related calculations of the strength and stiffness properties for cross laminated timber (CLT). Currently, the mechanical properties for strength and stiffness of CLT are specified in European Technical Assessments (ETA). For some properties the given strength values of the ETAs show significant differences which arise from different test methods and the related calculation models (e.g. shear in-plane – strength values can be referred to net or gross cross section). Another fact is that these differences make it harder for the structural engineers to interpret the material properties and perform correct calculation. Numerous scientific works, the regulations in the existing standard EN 16351  and the given test setups for achieving an ETA are the basis for the proposed test configurations of this paper which allow a stable determination of the material properties in the opinion of the authors. The paper discusses the test setups for bending, rolling shear and compression perpendicular to the grain for loads out-of-plane and for shear in-plane. Thus, a proper comparison of the characteristic values of the different CLT products can be achieved if all adequate test configurations are regulated in the standard EN 16351  in future.