I work for an open we steel joist manufacturer. Occasionally we see EORs specify a minimum required moment of inertia. There are a number of reasons I can imagine them specifying this but I wanted to get a more comprehensive list from this community. If you are a specifying engineer, why might...
IBC 2015, chapter 16, section 1602, under "Notations" the code defines "L" as "Roof live load greater than 20 psf and floor live load". It defines "Lr" as "Roof live load of 20 psf or less". How do you interpret "L"? If I have a roof live load of Lr=25 psf am I to treat all 25 psf as "L" since...
I have number of fixed end moments on a roof truss. (due to dead, live, snow and wind) Some of the wind moments are negative. Do I just combine the negative numbers straight into the load combination with the positive moments for example from Eq 16-6 in IBC 2015...
0.9D + 1.0(-W) + 1.6H
Is...
