<div>
what is Co in your formula? &nbsp;is it Cprob &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.83 ?
</div>


<div>
Hi Paul,<br />
<br />
I see, you accepted Norie's solution in your previous post and using my formula :)<br />
<br />
What are the cell references for Co(z), Ce(z) - I believe its D45, Qb - I believe its D35, CetQb?<br />
<br />
I have added above formula with Quotation Marks, while applying the cell reference remove double quote and refer to cells, if you face any difficulty, please post the workbook with complete cell references, I will edit the formula.<br />
<a href="https://filedb.experts-exchange.com/incoming/2017/11_w46/1210513/scaffoldv4.xlsx" target="_blank" class="file-inline" title="Formula1 (2.8 MB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>scaffoldv4.xlsx</a>
</div>


scaffoldv4.xlsx

<div>
Hi, I have added lines 50-57 to explain what cell D41 should produce depending on variable inputted. I am wondering whether this would suit Index and Match instead. This problem has evolved unfortunately with understanding the Eurocodes in more detail.<br />
<a href="https://filedb.experts-exchange.com/incoming/2017/11_w46/1210582/Copy-of-scaffoldv4.xlsx" target="_blank" class="file-inline" title="Copy-of-scaffoldv4.xlsx (2.8 MB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>Copy-of-scaffoldv4.xlsx</a>
</div>


Copy-of-scaffoldv4.xlsx

<div>
Excellent Shums. Apologies yesterday, I thought I was spreading the points! :-) I have been offline for a while.
</div>


<div>
You're Welcome Paul. Glad I was able to help you now.
</div>


<div>
Once last query ref cells, is there a way to format the text to keep subscript. I substituted out one of the equations to point to a properly formatted equation and it does not keep the formatting once displayed in D41? The use of subscript is quite important.
</div>


<div>
<div class="content wysiwyg-content">
This follows on from a previous question and some validation checking. <br />
<br />
=IF(AND(D37=&quot;Yes&quot;,D39=&quot;Tow<wbr />n&quot;),&quot;(Co(z<wbr />) + 0.6)/1.6)^2&quot;,IF(AND(D37=&quot;N<wbr />o&quot;,OR(D39=<wbr />&quot;Sea&quot;,D39=<wbr />&quot;Country&quot;)<wbr />),&quot;Ce(z) x qb&quot;,&quot;Ce(z) x Ce,t x qb&quot;))<br />
<br />
Simplified version<br />
<br />
=IF(AND(D37=&quot;Yes&quot;,D39=&quot;Tow<wbr />n&quot;),&quot;Equ3&quot;<wbr />,IF(AND(D3<wbr />7=&quot;No&quot;,OR(<wbr />D39=&quot;Sea&quot;,<wbr />D39=&quot;Count<wbr />ry&quot;)),&quot;Equ<wbr />1&quot;,&quot;Equ2&quot;)<wbr />)<br />
<br />
Based on the Eurocodes for wind design on which I am basing this spreadsheet I have an issue. &nbsp;<br />
<br />
The final answer for Equ 3 should equal Equ1 + equation 3 ( which is static = Co(z) + 0.6)/1.6)^2) or Equ 2 + &nbsp;equation 3.<br />
<br />
Not sure of how to build this one. I had thought using the cell E41 adjacent to D41 to display?<br />
<a href="https://filedb.experts-exchange.com/incoming/2017/11_w46/1210422/scaffoldv3.xlsx" target="_blank" class="file-inline" title="scaffold (2.8 MB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>scaffoldv3.xlsx</a>
</div>
</div>


scaffoldv3.xlsx

This follows on from a previous question and some validation checking. 

=IF(AND(D37="Yes",D39="Town"),"(Co(z) + 0.6)/1.6)^2",IF(AND(D37="No",OR(D39="Sea",D39="Country")),"Ce(z) x qb","Ce(z) x Ce,t x qb"))

Simplified version

=IF(AND(D37="Yes",D39="Town"),"Equ3",IF(AND(D37="No",OR(D39="Sea",D39="Country")),"Equ1","Equ2"))

Based on the Eurocodes for wind design on which I am basing this spreadsheet I have an issue.  

The final answer for Equ 3 should equal Equ1 + equation 3 ( which is static = Co(z) + 0.6)/1.6)^2) or Equ 2 +  equation 3.

Not sure of how to build this one. I had thought using the cell E41 adjacent to D41 to display?

Tweak required to equation

Microsoft Office is an integrated suite of applications that includes Outlook, Word, Excel, Access, PowerPoint, Visio and InfoPath, along with a number of tools to assist in making the individual components work together. Coding within and between the projects is done in Visual Basic for Applications, known as VBA.

Microsoft Office

Microsoft Excel topics include formulas, formatting, VBA macros and user-defined functions, and everything else related to the spreadsheet user interface, including error messages.

Microsoft Excel

Microsoft applications include a variety of software programs, including development and digital authoring programs (Expression and Media Center), educational programs, Internet software, including Essentials, Skype and the Live family, anti-virus, productivity applications and suites like Office, Excel, Word, Outlook, Access and PowerPoint, video games and server applications such as Exchange, SharePoint, IIS and Virtual Server.

Microsoft Applications

A spreadsheet is an interactive computer application program for organization, analysis and storage of data in tabular form. Spreadsheets developed as computerized simulations of paper accounting worksheets. The program operates on data represented as cells of an array, organized in rows and columns. Each cell of the array may contain either numeric or text data, or the results of formulas that automatically calculate and display a value based on the contents of other cells.