Problem 250
1- In the LRFD solution
Where is the vertical effect of seismic load (0.2 SDS) in the load combinations?? any reason for ignoring it?
Problem 260
1-The solution increased the load by 15% per ACI 8.3.3.
Actually, I did not find any indication about this 15% increase in ACI 8.3.3. !!!!!!!! Can anybody tell me where exactly this issue??
Problem 450
1- Why the solution determined Tu max??
Cu factor is always larger than 1, so what is the reason behind that?
2- The problem gave us Rigidity ® for each frame but the solution ignored these values and used "R" for the OBF.
Any reason for that?
3- For part (B) in the problem, to detrmine the force on each frame
why the solution did not include the amplification factor Ax??
4- To determine the total load on Column C2
According to the tributary area, the equipment load should go completely to Column B2. There is no any equipment load should go to Column C2. The solution used part of the equipment load on Column C2, any reason???
5- To design the Pier (pedestal)
The structure in SDC (D), so the max spacing of ties in pedestal according to ACI is 6" or 6db
The solution used 12" spacing, any reason??
Problem 460
1- The solution assumed the structure is Building Frame System, why not Bearing Wall System??
2-The problem required to check the beam using LFRD load combination. Is this means that I have to study wood design in LRFD???? I know ASD wood design only.
Thanks
1- In the LRFD solution
Where is the vertical effect of seismic load (0.2 SDS) in the load combinations?? any reason for ignoring it?
Problem 260
1-The solution increased the load by 15% per ACI 8.3.3.
Actually, I did not find any indication about this 15% increase in ACI 8.3.3. !!!!!!!! Can anybody tell me where exactly this issue??
Problem 450
1- Why the solution determined Tu max??
Cu factor is always larger than 1, so what is the reason behind that?
2- The problem gave us Rigidity ® for each frame but the solution ignored these values and used "R" for the OBF.
Any reason for that?
3- For part (B) in the problem, to detrmine the force on each frame
why the solution did not include the amplification factor Ax??
4- To determine the total load on Column C2
According to the tributary area, the equipment load should go completely to Column B2. There is no any equipment load should go to Column C2. The solution used part of the equipment load on Column C2, any reason???
5- To design the Pier (pedestal)
The structure in SDC (D), so the max spacing of ties in pedestal according to ACI is 6" or 6db
The solution used 12" spacing, any reason??
Problem 460
1- The solution assumed the structure is Building Frame System, why not Bearing Wall System??
2-The problem required to check the beam using LFRD load combination. Is this means that I have to study wood design in LRFD???? I know ASD wood design only.
Thanks