Falcon 9 uses a factory of safety of 1.4: https://www.nasa.gov/pdf/164283main_2nd_exp_conf_24_Commercial%20Opportunities_SpaceX_MrEMusk.pdf https://www.nasa.gov

Falcon 9 uses a factory of safety of 1.4: https://www.nasa.gov/pdf/164283main_2nd_exp_conf_24_Commercial%20Opportunities_SpaceX_MrEMusk.pdf https://www.nasa.gov/pdf/164283main_2nd_exp_conf_24_Commerci...