The use of Cross Laminated Timber (CLT) as structural element for shear walls and floors in multi-storey buildings has become very popular in the recent years in Europe. In many situations it is necessary to characterize the mechanical properties for CLT-elements subjected to in-plane loads, such as in the case of walls elements under lateral loads, deep beams or lintel beams realized in CLT. Many recent research works have been devoted to the definition of a proper test arrangement in order to determine specific mechanical properties. At the present a harmonized European Standard is Under Approval (prEN 16351 Timber structures - Cross laminated timber - Requirements), reporting two different test methods for determining the in-plane characteristic of CLT panels: i) edgewise in four-point bending test, with a gaps of non-edge bonded layers or butt joints positioned on the neutral axis of the specimen; (ii) shearcompression test on the net cross section with an ad hoc set-up.