Could someone please assist us with the loadfactor that is normally used in California for landslides. This is not a Caltran project but we would feel comfortable using whatever factor they us.
Your wall should be dowelled in at the base and considered a cantilevered wall for design purposes. The cantilever will create a K of 2, so the design height will be twice the actual height. This may be what is controling your design in enercalc.
Like the way you think structuresguy!
The steel joist institiute makes no differentiation in their bridging requirements (sizing) between one joist or a thousand.
Which would make one think that accumulation of forces for each member would not be required. But for the additional cost of a few...
As this doesn't seem to happen often, "my quess" is that if someone looked into it carefully you would probably find that it is a defect in materials or workmanship. In which case they should be responsible to replace the door.
There are formulas in AASHTO. One for point loads and one for uniform loads, that will give you the percentage of load that is carried by each direction.
with a: being the short span
b: being the long span
Point load short span is b^3/(a^3+b^3)
Point load long span is a^3/(a^3+b^3)...
MHSpurs
The only formular that I have seen for steel plates bent about their strong axis is:
Fb=.6 Fy for Ld/t^2 less that 500
Fb= 10,000/(Ld/t^2) ksi for Ld/t^2 over 500
where L is the span inches
d is the depth inches
t is thickness inches
This formular is stated to be for a simply...
aiden, "Crawley and Dillion Steel Buildings Analysis and Design" state Lu= 545\(12*d/Af), but when I worked this out to check Lu in the AISC 9th Edition Manual the numerator back figures to be closer to 555 than 545. But, this should give you a good starting point. The Lu values are rounded...
An individual footing would be one that is not attached to any other part of the structure laterally. Examples of individual footing would be a pile cap, or column footing that is too far below the slab to obtain lateral support from the slab. The idea here is to obtain lateral support for the...
AASHTO assumption is that the flange will bend slightly under load increasing the bending in the slab. This is for steel beams only. For stiff supports such as concrete I-beams and boxes the effective span length is the clear span. Hope this helps and good luck on the exam.
