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Leakchhayvat8-Gravel
8-Gravel
May 19, 2021
Solved

The function values for the end points of the interval must be of opposite signs.

Dear Expert MathCAD Prime Users,
While I am doing my assignment of Reinforcement Concrete Column Design I have a problem when I reached design axial compressive  I can not find the Value of a as you can see in my attached file in MathCAD Prime 7.0. The error message is "The function for the end points of the interval must be at opposite signs".  As I mentioned problem, I would like you to show me how to fix  this issue in order I can make a Column Interaction Diagram.
I am looking forward for your help and recommend.

Thank you!

ttokoro
ttokoroAnswer
21-Topaz I
May 19, 2021

May be you should check the unit and sign of Stress in Reinforcement Bar at first.

 

image.png

 

ttokoro_0-1621406061513.png

May be this one.

image.png

ttokoro_0-1621406174312.png

ttokoro_0-1621406396327.png

 

 

t.t.
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4 replies

ttokoro
ttokoro21-Topaz IAnswer
21-Topaz I
May 19, 2021

May be you should check the unit and sign of Stress in Reinforcement Bar at first.

 

image.png

 

ttokoro_0-1621406061513.png

May be this one.

image.png

ttokoro_0-1621406174312.png

ttokoro_0-1621406396327.png

 

 

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t.t.
Leakchhayvat8-GravelAuthor
8-Gravel
May 19, 2021

I have tried it. Anyway, would you mind please kindly send me the that you edited to me? I will have a look. Because I know that I still miss something in this, but I can not find it.

 

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ttokoro
ttokoro21-Topaz I
21-Topaz I
May 19, 2021

Just change the * to , at min function.

image.pngimage.pngimage.png

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t.t.
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