Is the Ix or Iy axis in the moment of inertia or/and the Wx or Wy axis in the section modulus of the wide flange has more to do with torsion resistance? Which, Ix, Iy, Wx, Wy is more related to torsion resistance?
See the animation of the torsion in:
https://en.wikipedia.org/wiki/I-beam
Most...
Hoops around columns enclosing main longitudinal bars at the corners were required to have both 135 degree turns at the ends. But it's difficult to turn them both 135 degrees at construction site and for vibrator to get inside so in the Philippines. We usually have only one turn 135 degrees and...
Have you designed same kind of building both in Seismic Design Category C and D,E,F? Did you notice the member sizes of the columns are bigger in Intermediate Moment Frame than in Special Moment Frame? This is because as Force Reduction Factor gets lower, you need to increase the member sizes...
from thread http://www.eng-tips.com/viewthread.cfm?qid=391663
KootK. Please refer to the figure below.
You mentioned above that in few scenarios, there is no net decrease in the moments of the column-beam joints (even when the column base is fixed).. something about #1 where the frame can...
The taller a building, the more flexible it is and longer period.
The shorter a building, the less flexible or more stiff it is and shorter period.
The more mass a building has the longer period.
The less mass a building has the shorter period.
Shorter period can attract more seismic load...
In Etabs 9.7.4. The Slab1 are not connected to beams and it can't automatically solve for tributary areas.. I had to use deck1 to get the load but it is not tributary. How do you get Etabs to use tributary areas in Slab1?
The reactions for continuous beam on column at middle with 2 point loads at midspan at either side has the following formula:
reactions at column or middle = 11P/16 where P is the point load at either side
reactions at either end = 5P/16
how about if a girder instead of column intersects the...
