...by humans and that have natural imperfections.
The allowable stresses are based on the code prescription that they will be compared with 1.5 * V / A. It's all an attempt to account for shear stress distribution in a non-isotropic material. It's an educated best guess at quantifying...
The Beam on Elastic Foundation module in ENERCALC SEL was developed with long wall footings in mind. It was conceived as a method of considering the interaction of soil compressibility and member stiffness. It wasn't intended to be applied to conditions where any portion of the footing tends...
Thanks for the ping.
structSU10 nailed it. The tilt calculation is based on the assumption that the stem rotates away from the retained soil and is unhindered by its presence. When the soil pressure indicates rotation INTO the retained soil, the calc is invalid, so we parachute out with that...
@StrEng007 Feel free to send in a tech support email on the question of Section 9.3.3.2.1 of TMS 402-16. It's something I would have to do a little research on.
Director of Engineering
ENERCALC, LLC
Web: www.enercalc.com
@StrEng007 What you're looking for is Section 9.3.3.2.1 of TMS 402-16.
The bit about considering the effect of the axial compressive load is in item (d).
Director of Engineering
ENERCALC, LLC
Web: www.enercalc.com
There are a couple things to consider here.
Section 9.3.3.2.4 provides a condition that would remove the upper limit on the flexural steel, based on the M/(Vd) ratio.
If that section does not apply, the max of 0.00715 is based on the assumption that the axial load in the column is zero. If...
@MillR: Thanks for the comments. You'd be amazed at the spectrum of comments that come in on these subjects. Let it suffice to say that we would never be able to set up the software in a way that would satisfy the needs of every user with no modification. So we have done what we can to set...
I can confirm that we provide the individual load cases (the ones with the word "Only") in the load combinations list as a convenience. If you click the Load Comb Control button above the Run column, there are quick options to select/deselect combos in groups.
It's also easy to start with our...
I can add some first-hand experience to this discussion. In the interest of full disclosure, I work for ENERCALC.
First I'll say that retaining walls are a real bear if you think you can apply loads and logic and come out with a perfect balance of forces at the end of the analysis. Hugh...
Be careful when applying the Concrete Beam module in ENERCALC SEL to anything that is actually a slab. The module is programmed for beams, and does not take slab provisions into consideration.
ENERCALC SEL does include ENERCALC 3D, which has the ability to analyze slab meshes and determine...
The attached two publicly available docs may provide some assistance in navigating CBC 2022.
Director of Technical Services
ENERCALC, Inc.
Web: www.enercalc.com
https://files.engineering.com/getfile.aspx?folder=463d8475-da51-4d1e-ba9b-44e03767d47a&file=2022_Title_24_CA_Code.zip
...So why doesn't ACI 318-14 make any adjustment for aspect ratio of shear walls?
In ACI 318-19, the resistance due to shear reinforcing is rho_t * fyt * Acv:
And ACI is clear that rho_t refers to horizontal steel in a shear wall:
And they remove any doubt that rho_t is the ratio of that...
ENERCALC has some tools that may be useful for a reality check/second opinion. (It is by no means a full building solution.)
The Torsional Analysis of Rigid Diaphragm module might be helpful for checking the force distribution to the shear walls. It only has the ability to assume that the...
mcc202,
You mentioned, "The only other alternative that I have used is EnerCalc which isn't much better and actually may be worse?"
We're available at support@ if you have questions, concerns, or suggestions that you'd like to discuss.
Director of Technical Services
ENERCALC, Inc.
Web...
ENERCALC technical support can certainly assist with your question. Please send your project file, software build number and user registration number to support@enercalc.com.
The question about loads “reducing overturning” or “increasing resisting” has been around for decades. The software...
Thanks again for flagging the issue with the calculation of Cg. It has been correct in ENERCALC SEL Build 20.21.10.30.
Director of Technical Services
ENERCALC, Inc.
Web: www.enercalc.com
Hi Folks,
Sorry for being a little late to the party, but I will see if I can help to clarify some of this.
We are switching from offering perpetual licenses to offering subscriptions. This is the industry trend. Some love it...some hate it. We get it.
This new version of the program is...
Thanks for flagging the potential issue with the calculation of Cg. I'll check on that calc and report back.
Director of Technical Services
ENERCALC, Inc.
Web: www.enercalc.com
Dik,
Do you read this to say that if using No.6 horizontal bars in a cantilevered retaining wall stem, ACI 318-14 required a ratio of 0.0025, and ACI 318-19 requires a ratio of 0.0018?
Director of Technical Services
ENERCALC, Inc.
Web: www.enercalc.com
