Category Archives: Concrete

Calling a function as a variable – another example

Posted on 22/04/2010 by dougaj4

The recent posts on the Inverse Quadratic Method and Brent’s Method, and on calling a function as a variable, are leading towards a user defined function (UDF) to analyse circular reinforced concrete sections under combined bending and axial load, but since … Continue reading →

Posted in Concrete, Excel, Maths, UDFs, VBA | Tagged , , , , , | 3 Comments

Tension Stiffening

Posted on 12/03/2010 by dougaj4

Tension Stiffening in reinforced concrete is the increase in stiffness of a cracked member due to the development of tensile stresses in the concrete between the cracks.  The main application of tension stiffening theory in design applications is in the … Continue reading →

Posted in Beam Bending, Concrete, Excel, Newton, UDFs, VBA | Tagged , , , , , | 3 Comments

Reinforced Concrete Moment-Curvature – 4; Development of curvature over time

Posted on 12/02/2010 by dougaj4

The previous post in this series looked at how specified shrinkage and creep strains affect the curvature of a reinforced consrete section subject to a constant load.  In this post I will present a User Defined Function (UDF) that analyses … Continue reading →

Posted in Concrete, Excel, Newton, UDFs, VBA | Tagged , , , | 6 Comments

Reinforced Concrete Moment-Curvature – 3; Restrained Shrinkage and Creep

Posted on 23/01/2010 by dougaj4

The previous post in this series provided Excel User Defined Functions (UDFs) to find the strain in a concrete section due to unrestrained creep and shrinkage.  In this post the effect of restraint of the creep and shrinkage strains by … Continue reading →

Posted in Concrete, Newton | Tagged , , , , | 7 Comments

Just in Time for Christmas!

Posted on 21/12/2009 by dougaj4

The new version of the Australian Standard Concrete Structures Code (AS 3600) has just made it for 2009: Download from SAI Global

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