If you can make a 3D model as suggested in Risa Or advance, you could change the properties of the wall rather easily, E'm that is. I think you will find when a moment frame shares load with a shear wall, don't expect much contibution from the moment frame.
I would also expect such a lopside...
Welding of a circular pipe to a flat plate where the pipe is in pure bending. I've seen the weld stress calculated as
M/Sw
M=moment
Sw=circular property of the weld
Is this the Section properties of that of a circular ring, with the effective throat being the thickness of the ring?
My thinking is our loads in accordance with their stresses and design manual for their steel. I've seen others post about finding an equivalent ASTM steel. I suppose you could do that and then run the design through the AISC manual. I could see the latter causing conflicts, but I might rely on...
Contacted by an Italian firm to oversee their design. They want to use European steel in the US. We will have to ensure the structure meets our codes. Is this permitted? Any one come across this situation before?
I am curious as to the relationship of drag coefficient and speed for a vehicle. I calculated an object moveing at 55mph having a Reynolds of 3.2*10^6. I think this puts it beyong the transition where drag coefficient drops significantly. However at 10mph it is before this transition.
But I've...
Update: did find a refernece to a "New York City Building Code of 1917", trying to obtain this though. I also found a reference to a "Detailed assesment of Moment frame elements with Masonry Infill Panels"
I am interested in this as we are doing work on an existing 1914 building, The NYS building code for existing buildings merely states that the structure shall be capable of supporting loads at the time or era. Unless you make modifications that increase the stresses by more than 5%. Something...
We've designed buildings that were Moment frame, but had exterior brick and CMU, this could be the architects choice, I believe the recommended displacemnt for masonry is H/600.
The CMU enclosure, if properly connected, could be incorporated into a shearwall system, the steel frame may allow...
I did an inspection of a residential home, had a good size crack in the wall, the home owner had filled it with silicone. The wall closed up and sqeezed it out over time. Just so you know. Every residential concrete foundation I've seen has always had cracks. Is there any reinforcing steel in...
Spacing of these cracks?How wide? How much is uneveness at floor? You mentioned the opposite wall has one also, does this crack go end to end? Could be settlement, some settlement is natural. The steps in the wall created a discontinuity and likely started out as shrinkage cracks. The crack was...
Obviously the flange was torqued, after it is straigntend they could also weld in some flange stiffeners, I also like the concrete encasment idea, they could weld some studs to the column to grab, not sure how the load path would work to the foundation.
When welding cover plates, consider the column has compression stresses in it, and the cover plate you are welding does not, AWS recomends stresses be less than 3 ksi.
If you are over this, you must incorporate this into your repair or remove the stresses.
I would go for heat straightening...
jheidt2543, thats a great point, Next time I get a prefab building, I will make sure the foundations can take the DL thrust and see what kind of FS I have.
We all went to the site, met with contractor, erector and architect. Turns out, where the drawings call for a bond beam, there is none, so we are adding more sleeve anchors. The fabricator put on an end plate big enough to accomodate this. It corroborated what I was doing. I did not turn over...
Not that this is a specific design. I don't get into concrete design too much but some. When designing concrete walls under flexure, how would one design and detail shear reinforcing. ACI 318 ch.14 references you ch. 11 which discusses stirrups, bent bars. Other than thickening the wall?
