Maybe you’ve seen this; I just now noticed this building project. At first, I thought I was seeing ‘decorative’ bands; but this is the exoskeleton, the load carrying frame. The (W)rapper Building Los Angeles, CA Excerpts “Arup used an LS-Dyna model for its nonlinear seismic analysis of the (W)rapper.” “EOMA, Eric Owen Moss Architects, created […]
Category: Steel Detail
Transmission Tower Details Dec 2020
Hyatt Regency Walkway Collapse
Detailing matters! Original design vs Actual fabrication STRUCTURE Magazine August 2016
Yield Line Theory — Rotation Angles Feb 2020
In this post, I provide derivations for the rotation angles between planes. We have two formulas: An exact formula [Eq 1] An approximate (easy and sufficient) formula [Eq 2] My link to my calculations Link to Blodgett Example
World Refining Magazine
A magazine article I wrote in 2002. Link to Reformer Design Article
AISC Bolt Shear — C Coefficient Jul 2019
AISC C Coefficient for Bolt Groups using Azure Jupyter Notebook Oct 2018
I decided to try out Jupyter using Microsoft Azure (currently free). I’ve invested a couple days on this project including learning new notebook extensions and Interact widgets. And so far, so good. Pros Easy to use Well-documented Relatively trouble-free Cons Could have faster response times
AISC C Coefficient for Bolt Groups using Pythonista Nov 2017
NOTE: Video format changed to MP4.
AISC C Coefficient for Bolt Groups Nov 2017
Replaces 48 pages of design tables in the AISC Manual. Allows any: bolt quantity or row spacing or column spacing or rotation No manual interpolation required. Karl Hoitsma, P.E. (khoitsma)
AISC Bolt Calculations Jul 2017
Eccentric Shear Connections Eccentrically loaded bolt group Ultimate Strength (Plastic Analysis) Uses Instantaneous Center of Rotation (I.C.)
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