Hi!
I have a metal deck slab over main steel beams (supported by columns) and secondary steel beams (supported by main beams). My questions are:
1. Is it required for all the steel beams, main and secondary, to be fully or partially composite with the metal deck slab? I read from AISC that for...
Hi!
I am somewhat confused by these terms in aci code. What's the difference between the two?
Based on my understanding:
TIE
- I found this term being used on chapter 10 (columns) so does this mean that this is for gravity columns only?
- using standard hooks only
HOOP
- a type...
Hi!
I was thinking about the proper way to model the support of structures. I have 3 cases in mind assuming this is for reinforced concrete:
Case 1:
Model the superstructure and put fixed or pinned support at grade level (based on engr's judgment). Support was put at grade level because soil...
Hi Sirs!
I want to detail a moment connection for bi-axial bending. I am looking to use the extended end-plate moment connection of AISC but I think this is only for bending in one direction? This will be used to connect a steel column above a continuous beam. If not the end-plate moment...
Hi Sirs,
Is there a way to retrieve the seismic and wind forces automatically calculated by ETABS and how they are distributed vertically and horizontally throughout the structure? I prefer forces plotted in the model using arrows but if there is none, forces in table format will do. The...
Hi!
If you have to conduct a structural design on a 4-storey dormitory steel bldg, what lateral force resisting system would you use?
I'm thinking to use Special Moment Frame on the strong axis and Special Concentrically Braced Frame on the weak axis of the W Shape columns. But my problem is...
I just have a question regarding ASCE 7-10 Sec. 27.4.6 Design Wind Load Cases. Case 1 is understandable wherein wind loads were applied only in one direction but for cases 2-4 , I am somewhat confused for the application of roof wind loads. Wall wind loads were just a combination of wind...
Hi all,
I am new to structural engineering and was hoping to be enlightened regarding moment-resisting frames and braces.
Lets say in a structure, I will be using Special Moment Resisting Frame (SMRF) on one direction (X-axis) and Steel Eccentrically Braced Frames (EBF) on the other direction...
Just want to ask. In Special Moment Resisting Frames in steel, is it required to put moment connections in every strong axis column and beam intersection? Or it depends on the structural engineer's discretion? Lets say, I want some intersection of the column and beam, even in the direction of...
Just want to ask about the load combinations you use for the deflection. Initially, my knowledge is that when computing for the deflection, you consider the ASD load combinations defined n ASCE 7-10 24.1
1. D
2. D + L
3. D + (Lr or S or R)
4. D + 0.75L + 0.75(Lr or S or R)
5. D + (0.6W or...
Hi all,
1) Is there a way to set the ground level in STAAD Pro or is the y=0 level the permanent ground level? This is for the purpose of computing the seismic forces because, from what I know, distribution of the computed base shear per level of a structure is related to the distance of a...
