I am trying to determine why STAAD provides a different frequency for a simple beam with concentrated mass model versus proven classical methods for the same model. The results are different enough to merit a discussion.
If any of you have STAAD, I have attached my input file. You can perform...
I have been looking into the Effective Area Method outlined in NAVFAC DM7-02 for rectangular and circular footings. However, for instances of designing foundations for silos or similar structures, ring type foundations are typically used (circular foundation with an outside and inside radius)...
I recently came across a report that gave loadings, foundation properties, allowable bearing, and actual bearing for a large water tank. Something comes across as very odd in this design.
Loads
D = 2860 kip
F = 8360 kip
W = 7800 kip*ft
Foundation Dimensions
OR pad = 25'-10"
IR pad = 10'-1"...
I've been working on the design for an octagonal mat for a storage tank over the past few days. Originally, I looked at a circular mat, but the rebar requirements were astronomical (the spacing was getting close to 3" c/c on #11 bars...so that won't work). The rebar requirements for my...
This is not a thread on "How do I study" as that's not really what I need to know. I'm not eligible to take the test until October of 2013, but I have considered getting materials together and working my way through the CERM and other references. I realize some folks may say it's too early/too...
Hi all -
I've been working with STAAD.Pro V8i for just over a year and have never been able to really wrap my head around the Seismic Design engine within the software. I've tried to read the documentation, look for tutorials online, etc. but I've had no real success. I've created a really...
Hi all -
I'm in a unique situation, so I figured I'd look for some input from other professionals who may or may not have come across something similar. I've been an EIT for 2.5 years now, so I'll be eligible to take my PE in Fall of 2013. I'm probably going to start brushing up and gathering...
I've been investigating the best way to design mat foundations without the use of software (largely because we are a small firm and have not had time to really dig into STAAD or PCA Mats or any other software capable of this) and have run into a few pitfalls.
A little bit of info to make some...
I'm looking at a vent that will be used to prevent a tank from collapsing due to vacuum pressures in a pipe burst/free drain scenario. The situation would be a container is filled with water when an inlet or an outlet pipe bursts. The water flowing out would create some pressure in the tank...
