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When you use the combinations from the ASCE 7, particularly the 0.6D+W, for footing design, do you use factors of safety of 1.5 for overturning, uplift and shear as well, or is the 0.6 considered the factor of safety? For instance, if I use 0.6D+W and find my uplift or lateral load, will my factor of safety need to be 1.5? Some structural engineers I have asked say use the FS=1.5 in addition to 0.6D and some say use 1.0. I use 1.5 in conjunction with 0.6D to be safe but this seems a bit excessive and I have not located any part of the code that specifically answers my question. Any help or advice would be greatly appreciated.