effective section modulus for angles
effective section modulus for angles
(OP)
Does anybody known how to calculate the effective section modulus for angles. The design is by Eurocode and for a 3"x3"x5/15" angle, SAP2000 give me Weff,y=0.707 in^4 and Wy=1.746in^4. Also the effective area is igual the section area. I would expect such sections with the same modulus.
Anybody could help me appointing what is wrong.
Thanks,
JokaSteel.
Anybody could help me appointing what is wrong.
Thanks,
JokaSteel.





RE: effective section modulus for angles
RE: effective section modulus for angles
According to the most general case, the effective cross sectional area is estimated for pure axial load, then for pure bending moment about one principal axis and finally for pure bending moment about the other axis.
Then, interaction formalae apply for estimating the capacity of the section.
Analysis and Design of arbitrary cross sections
Reinforcement design to all major codes
Moment Curvature analysis
http://www.engissol.com/cross-section-analysis-des...
RE: effective section modulus for angles
RE: effective section modulus for angles
With regard to pure bending, things get complicated, since you shoule only the whole section part under tension and only the effective part under compression. All these differ from code to code. For instance, Eurocode 3, Part 1-3 provides the basic principles for such calculations.
Analysis and Design of arbitrary cross sections
Reinforcement design to all major codes
Moment Curvature analysis
http://www.engissol.com/cross-section-analysis-des...