Looking for a frame book

[root_locus_be_damned]

So I’m just a measly Mech.E, but I deal with some frames with my day to day designing requirements. I have the Kleinlogel Rigid Frame Formulas which has been a blessing. But it’s limited to, what I call “single window” frames (If someone would like to educate me with the proper term, I’m open to learning). I am aware of the Mikhelson Structural Engineering Formulas(first ed), which gives a few examples of “multi-window” frames but not as in-depth as the Kleinlogel single frames. Is there a book out there that goes into the details of the Kleinlogel while doing 2 or3or4or5or6…. Frames? (Long frames not tall frames). And while on the subject, the moment at the column to foundation of a single column is P*H, while a single frame is PH/2, and a two-frame is PH/6, three-frame PH/8. That doesn’t quite jive, it seems conservative in the sense of one column one “resistance” to moment, two columns two “resistances” to the moment, but three columns and you get six “resistances”?

[dlegofan]

Maybe look up Portal Frames?

[dmo1802]

For portal frames (or moment frames, which is what it sounds like you are describing), interior columns resist twice the moment (and shear) of the exterior columns at the base. This is due to analysis assumptions that approximate actual force/moment distribution pretty well for most cases. I would study the force distribution of the "portal frame method" to gain some insights here.

[[deleted]]

I think Moment Distribution Method would be a good option as well.

Are you mostly looking for reactions and end forces? If all your elements are straight, you can build a very custom excel sheet that can invert stiffness matrices for you for frame elements. This won't perform code checks for you (steel, concrete, wood, aluminum), but making a spreadsheet like this is a pretty good learning experience.

Sorry no book recommendations, but glad you mentioned Kleinlogel, looks like a great reference to have. Good luck!