1.1 Scope of CEN/TS 19103(1) CEN/TS 19103 gives general design rules for timber-concrete composite structures.(2) It provides requirements for materials, design parameters, connections, detailing and execution for timber-concrete composite structures. Recommendations for environmental parameters (temperature and moisture content), design methods and test methods are given in the Annexes.(3) It includes rules common to many types of timber-concrete composite, but does not include details for the design of glued timber-concrete composites, nor for bridges.NOTE For the design of glued timber-concrete composites or bridges alternative references are available.(4) It covers the design of timber-concrete composite structures in both quasi-constant and variable environmental conditions. For ease of use, it provides simple design rules for quasi-constant environmental conditions and more complex rules for variable environmental conditions.1.2 Assumptions(1) The general assumptions of EN