Use a safety factor of 1.5, can the s.f that i calculated equal to the s.f given?

[SteveFinnan]

the value of yield strength/design load is equal to the safety factor given. Is it safe or yield?

I need to consider the weight of the whole structure as well. If i use bigger dimension, it is of course more safer, but the weight will increase as well.

So, can the safety factor calculated equal to the safety factor given?

Thanks.

 

[rb1957]

if you're saying that the applied stress*required safety factor = allowable stresses, then yes, you're ok ... bigger is "better" (stronger) but your structure is strong enough.

note that "allowable" can be different things in different places.

clear as mud ?