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Gregory Shafer, P.E., M.ASCE


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RE: Dorian-Bahamas Resiliency Think-Tank

Posted By Gregory Shafer 09-11-2019 09:58 AM
Found In Egroup: Integrated Buildings & Structures \ view thread
I'm interested in participating, please keep me informed. ------------------------------ Gregory Shafer P.E., M.ASCE BRIDGE TECHNICA Ellicott City MD BRIDGE TECHNICA ------------------------------

RE: HOW TO CALCULATE THE EQUIVALENT MOMENT OF INERTIA FOR A GRADED-THICKNESS CIRCULAR COLUMN?

Posted By Gregory Shafer 12-04-2018 07:53 AM
Found In Egroup: Integrated Buildings & Structures \ view thread
This requires special consideration as stiffness is different at each end, so the off diagonal terms are different in you stiffness matrix. Depending on the variation, the difference could be significant. Suggest to model as separate elements if you software doesn't support members with variable section. ...

RE: Suggestions Over Concrete Shooting?

Posted By Gregory Shafer 10-14-2018 09:12 AM
Found In Egroup: Integrated Buildings & Structures \ view thread
The proper mix design can be readily achieved without sacrificing desired properties. The water cement ratio can be maintained by using a high range water reducing agent in order to achieve the desired pumpability (I.e. slump). Proper selection of aggregate and sand is also important for good performance ...