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Category Archives: Concrete
RC Design Functions update
Following a comment here I have updated my RC Design Functions spreadsheet, which is available for free download (including full open-source code) from: RC Design Functions7.zip The main new features in the latest version are: The existing optional “depth” argument has … Continue reading
Posted in Arrays, Beam Bending, Concrete, Excel, Frame Analysis, Newton, UDFs, VBA
Tagged EStress function, Excel, Goal Seek, Reinforced Concrete, UDF, UMom function, VBA
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If it keeps on straining …
… concrete’s goin’ to break: To find out what this has to do with predicting concrete deflections, book into the Concrete Institute seminar on “Finite Element Analysis of Concrete Structures”: Finite Element Analysis of Concrete Structures – Software and Practice … Continue reading
Posted in Bach, Beam Bending, Concrete, Newton
Tagged Concrete beam test, concrete cracking, Led Zeppelin, Levee Breaks
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Solving non-linear equations with two or more unknowns – 5
This will be the last of the series on solving non-linear equations (for now). Up until now all the examples have had two unknown values, and two target values. This can be extended by making three changes to the code: … Continue reading
Posted in Beam Bending, Concrete, Excel, Link to Python, Maths, Newton, NumPy and SciPy, UDFs, VBA
Tagged Excel, ExcelPython, moment curvature, Newton's Method, Python, SciPy, SciPy optimize function, solving non-linear equations, tension stiffening, two or more objectives, two or more unknowns, UDF, VBA
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Solving non-linear equations with two or more unknowns – 4
As promised in the previous post, the spreadsheet including the new functions to calculate reinforced (or prestressed) concrete moment-curvature with a revised concrete tension stress-block is now available for download from: RC design functions7.zip The spreadsheet includes full open source … Continue reading
Posted in Beam Bending, Concrete, Excel, Maths, Newton, UDFs, VBA
Tagged Excel, moment curvature, Newton's Method, solving non-linear equations, tension stiffening, two or more objectives, two or more unknowns, UDF, VBA
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Solving non-linear equations with two or more unknowns – 2
The previous post presented a simple but slow procedure for solving non-linear equations with two unknowns. In this post I will describe a much faster method, that also has the advantage that it can simply be extended to work with … Continue reading
Posted in Beam Bending, Concrete, Excel, Maths, Newton, UDFs, VBA
Tagged Exce, moment curvature, Newton's Method, solving non-linear equations, two or more unknowns, UDF, VBA
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