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Category Archives: Excel
Code Generator
One of the difficulties with Excel routines to solve differential equations, or do numerical integration, is that the equations to be solved must either be coded as VBA functions (which is time consuming), or solved using the evaluate function (which … Continue reading
Lateral pile analyis with PY curves …
… and non-linear pile properties. In previous posts I have presented Excel User Defined Functions (UDFs) to analyse a laterally loaded pile, generate soil PY Curves based on the recommendations in the COM624 Manual, and determine the flexural stiffness of cracked … Continue reading
Posted in Concrete, Excel, Geotechnical Engineering, Newton, UDFs, VBA
Tagged COM624, Excel, Laterally loaded pile, Non-linear concrete, UDF, VBA
17 Comments
The hole through the middle of the Earth – revised transit time
In the previous post in this series I produced a table of acceleration due to gravity against depth from surface, based on the four layers of the Earth (Crust, Mantle, Outer Core, Inner Core), assuming a constant density for each layer. … Continue reading
Posted in Differential Equations, Excel, Newton, UDFs, VBA
Tagged Excel, hole through the middle of the earth, ODE Function, UDF, VBA
3 Comments
Update to CHSplineA Function
I have recently corrected the CHSplineA function included in the CSpline2 spreadsheet. The earlier version was returning incorrect values for the slope and curvature of the spline (with output option 2), if the spacing of the points defining the spline … Continue reading
Office 2010; Installation problems and solutions
I installed Office 2010 a couple of weeks ago, and I have just succeeded in getting the help system to work. After pressing F1, or clicking the Help icon, I was getting a screen saying that the help system was … Continue reading
