Testing historic materials for redesign purposes

Design and redesign process of historicstructuresis often supported with various standards for testing of material and structural characteristics. In the case of historic structures, the use of standards to es-tablish the material characteristics of in-situ structural elements is sometimes required. This paper analyzes possibilities of use of destructive or non-destructive methods for testing historic structures, the questions of transformation of experimental data into design values as well as sampling of material extracted from the his-toric structures. Case studies of testing of timber structures, roof tiles and historic masonry are included.