Hi,I m asked to calculate the allowable load for a designed hospital pendant which needs to be mounted on the ceiling.The company has given me a similar sample to take reference but I have a lot of steps which I don't understand, so sorry there may be a lot of questions I need to ask for...First, at page 3, Spreading area = (560+2x90)x(311+2x90) = 740x491mm^2 I don't know where are those numbers come from?And at page 4 about the Restoring moment about edge, I also don't understand the whole step, where 9.8 kN comes from and FS = 14>1.5. Does FS mean Factor of Safety?And last at page 6, starting from Check Restoring Moment: 3 nos. of M10 HSLIt will be grateful if anyone could explain whole calculation steps.Thank you for helping
https://www.dropbox.com/s/gy6sl2ms1wmqwco/Door%20Detail%20WD04.2.pdf?dl=0
https://www.dropbox.com/s/gy6sl2ms1wmqwco/Door%20Detail%20WD04.2.pdf?dl=0