Tool allows calculation of required duct sizes. 

 

                         Calculation 

 

1. Required fill factor k

2. Cable diameter Cd,  giving cable area, a:

 «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»a«/mi»«mo»=«/mo»«mfrac»«mi»$#960;«/mi»«mn»4«/mn»«/mfrac»«msup»«mi»d«/mi»«mn»2«/mn»«/msup»«/math»

3. Cable total area Ca = sum of area for all cables

4. Minimum duct diameter  Cc:

«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»Cc«/mi»«mo»=«/mo»«msqrt»«mfrac»«mrow»«mn»4«/mn»«mi»a«/mi»«/mrow»«mi»$#960;k«/mi»«/mfrac»«/msqrt»«/math»