CommScope ConQuest Conduit Construction - Manual (Page 67)

Fill Percentage Calculation
The fill percentage can be calculated using this formula:
• Single cable
Where:
ACa = Area of the cable
ACo = Area of the conduit
OD = Outer diameter of the cable
ID = Inner diameter of the conduit
FP = Fill percentage
ACa = π* ( OD / 2 ) * ( OD / 2 )
ACo = π* ( ID / 2 ) * ( ID / 2 )
FP = 100 * ( ACa / ACo )
Example: QR 715 in 1.5” Schedule 40 conduit
ACa = π* ( 0.881 / 2 ) * ( 0.881 / 2 ) = .610
ACo = π* ( 1.580 / 2 ) * ( 1.580 / 2 ) = 1.960
FP = 100 * ( .610 / 1.960 ) = 31.12%
• Multiple Cables
ACa1 = π* ( OD / 2 ) * ( OD / 2 )
ACa2 = π* ( OD / 2 ) * ( OD / 2 )
ACo = π* ( ID / 2 ) * ( ID / 2 )
FP = 100 * ( ( ACa1 + ACa2 ) / ACo )
Appendix 8.10
Maximum Pull Distance