One for the Master Minds out there

[Neil M]

This is something that I have never had to do before so I dont even know
where to start.

My spreadsheet calculates linear feet of reinfircing steel based on criteria
that I enter. I have the formulas working thatnks to the great help of others
today.

Now I have a series of linear feet that I have to add to one total. However
if the length of reinforcing steel is greater than 20 feet you have to splice
it which adds about 4 feet to the bar lenght, but it is for EVERY 20 feet
incrment. So here is what I need.

If A1<20 then formula a
If A1>20 then formula+4 (But for every 20 foot increment)

Is this possible?

 

[T. Valko]

Try this:

=IF(A1<20,Formula_A,Formula_A+4*(A1/20))

Or, if you only want to calculate "full" 20 ft lengths:

=IF(A1<20,Formula_A,Formula_A+4*INT(A1/20))

 

[Gary''s Student]

If you total length is in A1, then the number of twenty foot sections is:
=INT(A1/20)
or the length with the splices is:
=A1+4*INT(A1/20)

for if A1 contained 234 then the formula gives: 278 because 11 splices are
needed.