Where do I find the stress formulas for deflection of a center support on a 2 span beam, and or a beam with two un-equal spans. (See attached sketch) for clarification.https://files.engineering.com/getfile.aspx?folder=bf9a89af-a2fa-4956-94b2-f09b159a64b7&file=scan1872.pdf
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I have further question about that is reference to the thread above. I have a 20' tall vertical wall mullion that has 5'-0" of perpendicular wind tributary (Say 25 PSF Net Service- in any direction). The Vertical fin has a nosing projection that projects 2'-0" off the vertical...
OK so I have always multiplied out the wind loads from ultimate and multiply by CBC (equation 16-33 on page 23 of the CBC. ie if the wind pressure is 25 psf ult *Squareroot(0.6) = 0.77*25psf =19.25 psf.
But the confusion comes when applying ASCE 7-10 load combination 6 ____ D+...
Yes it does says bondo for sealer for the out side of the plate. I would love to use a welded stud and skip this but it is already installed. (XR250) what is a design example for bolt into a tapped plate. That is exactly what we are doing.
(r13)It is loaded in pure shear with the load coming in right at the plate interface. See attached.
(PhamEng) Do you have a design example that I can look at. The plan checker wants me to follow exactly something put out by AISC or AISI...
Lets say I have a 3/8" diameter threaded stud with a nut on one side, going into a 1/2" thick 36ksi steel plate.
How would I calculate the capacity.
Plan checker says AISC only addresses a nut or mushroom head on both sides.
Interesting point is I sat through the latest ACI seminar to update us on the new book.
I asked ACI rep and the PHD who was teaching the lecture about a shear lug and base plate design in to a reinforced concrete sonotube column and he looked at me with a blank stare.
I asked him about App D vs...
If i was designing a 24"sq x 48" tall light pole base of 3000 psi concrete,
At which point can it ignoring appendix d and just use reinforced concrete design with tension reinforcement and and shear stirrups.
IS is 18" or 24" inches or is there a specific code section that I can point to on...
Where is this described in the ACI 318-14?
I'm using wind for design thus I've always used used 1.6 times Wind to go from service level to Ultimate level loads for wind.
Is there a footnote that I am missing somewhere.
What programs are people using? I have seen peopl using SBEDS X1.1.1 but that seem pretty old. I am fine with that, does anyboy ahve a link to software to purchase or any info. to help a guy out?
The use of wood blocking inside of elevator shaft walls. or to attached hand rails in fire assembly rated walls. Is their a coded exemption where I can do this. I read it at some point but cannot find it.?? This is for a metal stud assembly.
So it seems you can design a plain concrete wall with no account for reinforcement.
My question is the use of Phi Factors.
The commentary is ACI 318-14 states to use the same Phi factors as reinforced concrete [R14.5.1.2] Pg. 199
but [table 21.2.1 } - Pg. 341 has value of Phi = 0.6 for plain...
But what is the minimum edge distance for the interior face of say 2-2x6 built up, not the exterior edge.? Is it still the 1.5D W' (Withdrawal) and 2D Z' (Shear perpendicular to grain). The reason I ask this, is that is common practice in say Texas and Ohio to use built up 2x10 headers to create...
Guys, I have struggled with this in the past but here is a great examples from the ADM 1-2015 (Enjoy!)https://files.engineering.com/getfile.aspx?folder=e428cfca-29dc-434a-a940-437a9e4a24bb&file=Sc_Calcualtion_on_Unsymmetrical_Shapes.pdf
Thanks for the input guys.
From what i can tell The Mighty Engineer is probably right.
I'm thinking 25 out of 40 right in the morning and 3/4 right in the afternoon.
I recently purchased the red book(14th) and there is very little difference between the two. Thus,
I was close and did not...
I recently took the Gravity SE exam and received 3 acceptableness and 1 not acceptable on the afternoon portion of the exam.
It gave me an acceptable in Concrete which I barley drew pictures and diagrams for. (Ran out of time)
It gave me unacceptable on Steel which I completely smoked. However...
Are there any design guide or data on how to size a precast concert post base for deck in California. Yes I know how to size footings, but can't find anything on this.
