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FLRPLATE

02-24-2009 07:20

Analysis of floor plates subject to uniform loading (per AISC 9th Edition ASD Manual)

#memberdesign #ASD9

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05-01-2013 09:21

Regarding the 2013 update to Version 1.6, the author states:
I made a few changes and additions to the "FLRPLATE.xls" spreadsheet workbook for the analysis of floor plate.
Several people had asked about why the allowable bending stress, Fb, was limited to 16 ksi in the Floor Plate Bending Capacity table in the AISC Manual. The answer is best explained in the article "Are You Properly Specifying Materials?" by Charlie J. Carter, S.E., P.E. from "Modern Steel Construction" magazine, January 2004 (as follows):
Raised-Pattern Floor Plates
ASTM A786 is the standard specification for rolled steel floor plates. As floor plate design is seldom controlled by strength considerations, ASTM A786 "Commercial Grade" commonly is specified. If so, per ASTM A786 Section 5.1.2, "the product will be supplied 0.33 percent maximum carbon and without specific mechanical properties". Alternatively, if a defined strength level is desired, ASTM A786 raised-pattern floor plate can be ordered to a defined plate specification, such as ASTM A36, A572, or A588; see ASTM A786 Sections 8 and Appendix Table X1.1.
In order for the worksheet to be able to create a calculation which would reflect the values in the AISC Manual table, I added the user input asking if the allowable bending stress is to be limited to 16 ksi or not. I also added a couple of comment boxes as well as a couple of visible notes on the calculation page pertaining to simulating one-way action and plate yield stress.