is far from the center in a continuous path since all the material is continuously far away from the center in the i-beam however there is no continuous path for the shear flow other than through the center so shear flow arrows are forced to move through the center having the area run through the center i.e not having a tube or hoop restricts the i-beam's ability to resist torsion so the beam with the most continuous area furthest from the center will have the best ability to resist torsion an avid watcher might ask doesn't the corner of the square two technically cause a discontinuity because of its sharp edge the answer is yes sharp corners do cause discontinuity and stresses one way to make a beam with equivalent area even stronger than we've shown is to make a hollow circular tube now this beam has the most possible continuous smooth area as far from the center as possible now this shape is optimized for resisting torsion in summary the ibm is strong in bending from downwards loads due to more area in the phalanges being further from the center however if the area spread too far from the center the i-beam can be weak and buckling plus the i-beam is weak against torsion in general because it does not have continuous area far from the center we hope this video gave you some insight into the engineering considerations that go into designing ibms engineers spend unthinkable amounts of time choosing shapes and cross sections for their beams so that failure events can be as rare as possible next time you're inside a building look up and see what shapes you observe as a growing channel we appreciate the support of all our viewers and would be grateful if you could like and subscribe thank you for watching and feel free to leave a comment if you have any feedback or would like any more information
START_INTERACTION_TOKEN as a growing channel we appreciate the support of all our viewers and would be grateful if you could like and subscribe thank you for watching and feel free to leave a comment if you have any feedback or would like any more information END_INTERACTION_TOKEN