If a beam or column has certain moments and after you put rebars.. what would happen to the moments? For instance. A beam has certain moment at midpan, when you put the rebar to address the tension (bottom bars).. what would happen to the moments? I assume the beam would no longer deflect for...
Just a question about frame analysis software. In Etabs, in the Deformed shape button. What you get is pure concrete deformation without any rebars. In the Concrete Design button, you get the PU and MU for certain load combinations and the percentage of rebars.
What other software package...
In edge column where there is moment inbalance due to eccentric loading and assuming fixed base, there is double-curvature column flexure. Can seismic wave reverse it? In your previous experience, how strong the seismic before the double-curvature reverses? In the above illustration/example...
Hi, is there a device where you can aim it at a column or beam and it can show how much it is in deflection? I can imagine it 2 laser beam hitting the upper/lower or left/right of the member and it can measure micro difference in the distance, hence the deflection. There must be such device. If...
From Mcgregor's "Reinforced Concrete Mechanics and Design 6E"
If you are familiar with the concept, jump to the bottom questions:
(briefing quoting Mcgregor)
"When the frame is displaced laterally through the inelastic deformations required to
develop the ductility of the structure, the...
1. Flexural crack occurs normally in midspan of a beam
2. You have a secondary beam framing into the midspan of a girder
3. Flexural cracks occur in midspan that that is nearer to the top portion of the beam (when the neutral axis is higher up). This is common in such interface.
4. A little...
