RCDD · Question #38
Using the "pathway design" for horizontal cable distribution, how many cable runs are placed to serve 15 individual?
The correct answer is C. 45. Tests the candidate's knowledge of the cable run multiplier used in the pathway design method for horizontal distribution, where 3 runs are provisioned per individual work area.
Question
Using the "pathway design" for horizontal cable distribution, how many cable runs are placed to serve 15 individual?
Options
- A15
- B30
- C45
- D60
How the community answered
(39 responses)- A8% (3)
- B3% (1)
- C85% (33)
- D5% (2)
Why each option
Tests the candidate's knowledge of the cable run multiplier used in the pathway design method for horizontal distribution, where 3 runs are provisioned per individual work area.
15 cable runs reflects a 1:1 ratio, which does not satisfy the pathway design standard because it provides no capacity for redundancy or future cable additions.
30 cable runs reflects a 2:1 ratio, which is below the minimum 3:1 multiplier required by the pathway design methodology for horizontal distribution.
The pathway design methodology for horizontal cable distribution specifies a ratio of 3 cable runs per individual work area to accommodate present needs and future growth or reconfiguration. Applying this ratio to 15 individuals results in 15 x 3 = 45 total cable runs required for the horizontal distribution pathway.
60 cable runs reflects a 4:1 ratio, which exceeds the standard pathway design multiplier of 3 and would result in unnecessary over-provisioning of pathway infrastructure.
Concept tested: Horizontal pathway design cable run ratio calculation
Source: https://www.bicsi.org/standards/available-documents/tdmm
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