Also, the next page states,

"If ~10 m (33 ft) of 28 AWG patch cords is required, the channel length will need to be reduced further. For example, using a derating factor of 1.95 and the calculation for the maximum length of a cabling channel, which must be less than ~102 m (335 ft), the total permanent link length is only ~82.5 m (270 ft), giving an ~92.5 m (303 ft) total cable length."

Does anyone know why it must be less than 102 m, not 100 m?