LENGHT ISSUE AND TAKE OFF

[farshadvamp987807]

HI i need help about the lenght of some material.here what i done
1.create the schedules
2.material take off then
3.multi category
then im loking for the lenght and i cant find it, i just want to calculate the leangh of one material element in my project but i dont know how.
i really appreciate if you help me out

[damon.sidel]

Materials take offs calculate AREAS, not lengths. If they are linear elements that all have the same width, you can create a calculated value such as "= Area / #" where "#" is the width.

[farshadvamp987807]

some thing strange happen when i arrey or copy some element in tow element the value of first element change for example you know 2x2=4 but the revit show me 2x2=2.5
i chek decimal and every thing i dont know what to do.