If you assign a seismic zone to the model, it will calculate your minimum boundary zone for you (function of Pu/P0 etc..)-
What I do after that is proportion the steel to fill the required boundary zone, and minimum steel otherwise; (of course depending on the controlling loading scenario, I...
I use uniform reinforcing and assign a single pier label for a continuous segment of vertical shearwall (as WillisV mentioned, ETABS splits it up at story levels)- and in a nutshell I have written a script that boils down the design data outputted from ETABS in a spreadsheet, and optimizes the...
I'm assuming that this house is still under construction without china cabinets in place..
Like dzinegrp mentioned, I'd recommend jacking in lieu of cutting. Why? the condition appears to be at the foundation. If you start chopping on the concrete, you will loose your minimum cover and then...
"If you get really bored (or excited) you could graph the moment capacity of your beam wrt length and superimpose that on the bending moment diagram to see where you are with design requirements. You can go back and do the same with the shear force, and then again for required moment of inertia...
Fatigue and associated pavement and highway designs are based upon ESAL's- Equivalent Single Axle Loadings if I remember correctly.
Strength, Servicability and Fatigue are 3 entirely different beasts. If something is designed for it's limit state strength capacity- that doesn't neccessarily...
Just trying to be the devil's advocate here-
If you have a 6 in 12 sloped roof, and somehow the snow sticks to it, where does the thrust loading go?
Pulling numbers out of the air:
(30 ft joist)x(8 ft trib)x(20psf Snow)x(SIN(31.3) [6 rise in 12 run]) = ~2.5kips per joist
I don't even know...
Well- I can't speak for everyone (obviously)- but especially in my Master's program, I was taught and understood the theory behind the software. I know the linear algebra, stiffness derivations, dynamic and optimization algorithms well enough to feel comfortable using commercial software. For...
We always specify the middle third of the span- and I just wouldn't accept a construction joint at the face of the column- period. You are the one sealing the final design- not the contractor.
If you are backed into a corner (situation to avoid in the future, especially if coming from a...
Typically a shear key is put in place to allow for waterproofing elements (waterstops) to be placed prior to the next pour, in addition to strength requirements.
This will typically just be a 2x4.
Size the vertical reinforcing for the overturning moment, check the reinforcement for shear...
29' is very manageable with post-tensioning- envision around a 7"-9" PT 2-way flat plate. Of course you need to run your own numbers and ask for help if you are unfamiliar with PT.
If you have problems with punching shear, there are several products like Decon Studrails or Lenton Steel Fortress...
Assembled Point Masses is the total mass of the struture; at the end of the table it has a total.
For instance -> 30,000 kilo-slugs from APM
30,000 kilo-slugs x 32.2 (g) -> 966,000 kips - Effective Weight
966,000 kips x 3% -> 28,980 kips - Minimum Base Shear by Code
20,000 kips total base...
