Commands:

Instantaneous Center FOUND: xRo = -1.906, yRo = 5.286

MS Excel BOLT COEFFICIENT CALCULATOR Vesion 1.0, Copyright 2011 by Redem Legaspi Jr

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Notes:

1.) The mathematics behind this spreadsheet is based on the method developed by Donald Brandt on the determination of the location of instantaneous center of rotation of Eccentrically Loaded Bolt Group. In contrast to Crawford & Kulak's method that searches the instantaneous center of rotation along the line perpendicular to the applied load, Brandt's method includes all points in a two-dimensional plane to locate the instantaneous center of rotation.2.) This spreadsheet is driven by VBA Code (Visual Basic for Application macro). When opening and using this spreadsheet, the VBA Code must be activated. To do this, you must set your macro security setting to either Medium or Low and allow macro to run.3.) The graphics layout of Eccentrically Loaded Bolt Group, above, is created by manipulating MS Excel chart.4.) Please visit my personal blog: engineersviewpoint.blogspot.com for further discussions on Eccentrically Load Bolt Group and instantaneous center of rotation.

Calculate Abort Use Pre-defined Bolt Group Clear Bolt Data

The Author:This spreadsheet/program is written by Redem Solasco Legaspi Jr for AISC (American Institute of Steel Construction) SteelTools.

Notes:

1.) The mathematics behind this spreadsheet is based on the method developed by Donald Brandt on the determination of the location of instantaneous center of rotation of Eccentrically Loaded Bolt Group. In contrast to Crawford & Kulak's method that searches the instantaneous center of rotation along the line perpendicular to the applied load, Brandt's method includes all points in a two-dimensional plane to locate the instantaneous center of rotation.2.) This spreadsheet is driven by VBA Code (Visual Basic for Application macro). When opening and using this spreadsheet, the VBA Code must be activated. To do this, you must set your macro security setting to either Medium or Low and allow macro to run.3.) The graphics layout of Eccentrically Loaded Bolt Group, above, is created by manipulating MS Excel chart.4.) Please visit my personal blog: engineersviewpoint.blogspot.com for further discussions on Eccentrically Load Bolt Group and instantaneous center of rotation.

Today is April 22, 2023

Data Input: Results:

Load Eccentricity 13.500 C Coefficient Value 9.352Load Rotation Angle 65.000 C' Coefficient Value 78.449

Bolt Group Layout:

No.Coordinates

Remarks No.Coordinates

Remarksx y x y

1 0.000 0.000 512 0.000 4.000 523 0.000 8.000 534 3.500 0.000 545 3.500 4.000 556 3.500 8.000 567 7.000 0.000 578 7.000 4.000 589 7.000 8.000 5910 10.500 0.000 6011 10.500 4.000 6112 10.500 8.000 6213 14.000 0.000 6314 14.000 4.000 6415 14.000 8.000 6516 6617 6718 6819 6920 7021 7122 7223 7324 7425 7526 7627 7728 7829 7930 8031 8132 8233 8334 8435 8536 8637 8738 8839 8940 9041 9142 9243 9344 94

Copyright 2011 by Redem Legaspi Jr

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