We need to check the adequacy of an existing water tank for installing some proposed antennas and supporting mounts on top of it.
Is IBC's rule, 5% and a 10% allowable increase in gravity and lateral loads, applicable to existing water tank? Or it has to be checked rigorously with AWWA D100...
For example, a Channel steel shape: where I can find all geometric parameters defining the inner C of the C shape cross section, curves (radius) at the flange toe and web toe, slope of the flanges at the top and bottom inner C, etc.
The AISC SCM gives basic parameters about section geometry and...
Appendix D has definition of "Anchor Group" and uses words such as "group of anchors" and "multiple ~ anchors with <some condition>".
I am trying to understand how to identify anchors for above mentioned words for various capacity checking (breakout, blowout, etc.). Here are some of my...
I am reviewing ATC's tower calculation. On ATC's drawing, there are some structural info not familiar to me.
For example, Leg Members: PLA 50 ksi 9*3/8"; PLA 50 ksi 7 7/16"*3/8". I can guess the material is 50 ksi but what are the member size by 9*3/8" and 7 7/16"*3/8"?
Also, Diagonal...
The model is a pole base connection with stiffeners. The connection is composed of three parts, the baseplate, the pole and the stiffener. All three areas are contacting each other but not through each other.
Please see the attached files for parts description.
I create the areas for each part...
I have an ANSYS model which has been meshed already and the geometry (line, area and colume) info is no more available. New geometry objects are to be added onto existings and sharing boundaries with the existings.
How can I mesh the new geometry objects so that they will use the same mesh at...
Any thoughts on generating the p-y curves as Lpile does?
I wanted to generate the p-y curves as Lpile does using exactly the same soil info Lpile use. Lpile's technical manual has some information such as equations and tables, but I do not think that is adequate to generate the exactly the same...
How to match the mesh of new volume/area to existing mesh
Hi, I have a meshed model with nodes and elements and the geometry info for volume and area are lost. Now I need to add some volume and area to the existing model. Is there any way I can make the added volume and area aumomtically meshed...
Based on the EOM, m*x_tt+c*x_t+k*x=f(t), if f(t) =m*a_g where the excitation acceleration a_g is the base/ground acceleration like earthquake loading, my understanding is that since the direction/sign of x and x_tt are unknown, the x_tt may be smaller/greater than a_g if x has the same/different...
I checked all ANSYS examples for using spring element with two nodes to model the response to loading in one certain direction. I can do that for any of the six DOFs, three translations and three rotations one by one. However, I do not know how to model all six dofs in one model using two nodes...
I am not sure about my understanding for some issues in nonlinear structural analysis using FEM. And want to ask your experts. Exclude material nonlinearity.
In my understanding, there are two cases regarding nonlinear analysis.
1. nonliear global structural deflection and nonlinear local...
We all know that the connection beyond the theoretical cutoff point needs to be strong enough to support the induced(allocated) tension/compression forces of the cover plate due to bending moment at the theoretical cutoff point. The force can be conservatively calcualted as T = Fy*Sb/Sbr*Ac...
