The use of simplified methods for designing according to EC6 and safety of masonry structures

The article describes the calculation method of masonry walls loaded vertically according to PN-EN 1996-1-1 and PN-EN 1996-3. The Calculation method is given and the differences between Eurocode 6 and "old Polish standard" are indicated. Additionally, the differences between calculations according to exact and simplified method described in Eurocode 6 that show adverse consequences of the use of simplified method. The places (formulas and assumptions), which causes the discrepancies in calculation methods are pointed out in the study.