(1) A fair, just, reasonable, and sufficient rate for attachments to or in facilities shall assure the owner the recovery of not less than all the additional costs of procuring and maintaining the attachments, nor more than the actual capital and operating expenses, including just compensation, of the owner attributable to that portion of the facility used for the attachments, including a share of the required support and clearance space, in proportion to the space used for the attachment, as compared to all other uses made of the facility, and uses that remain available to the owner.
(2) The following formula for determining a fair, just, reasonable, and sufficient rate shall apply to attachments to poles:
Maximum Rate | = | Space Factor | x | Net Cost of a Bare Pole | x | Carrying Charge Rate |
Where Space Factor | = | Occupied Space |
Total Usable Space |
(3) The following formula for determining a fair, just, reasonable, and sufficient rate shall apply to attachments to ducts or conduits:
Maximum Rate per Linear ft./m. | = | [ | 1 | x | 1 Duct | ] | x | [ | Number | x | Net Conduit Investment | ] | x | Carrying Charge Rate |
| Number of Ducts | Number of Inner Ducts | | | of Ducts | System Duct Length (ft./m.) | |
| | | | | | | | | | | | | | |
(Percentage of Conduit Capacity) | | (Net Linear Cost of a Conduit) |
simplified as:
| Maximum Rate per Linear ft./m. | = | [ | 1 Duct | ] | x | [ | Net Conduit Investment | ] | x | Carrying Charge Rate | |
| | No. of Inner Ducts | | | System Duct Length (ft./m.) | | |
If no inner duct or only a single inner duct is installed, the fraction "1 Duct divided by the Number of Inner Ducts" is presumed to be 1/2.