BICSI RCDD cheat sheet

Horizontal cabling maximum distance is 90 m (295 ft) of permanent link plus 10 m (33 ft) of patch cords for a 100 m channel.

Backbone distance limits depend on media and application; single-mode fiber supports 2,000 m and multimode OM3/OM4 commonly 300-550 m for 10GBASE-SR.

Recognized horizontal media are balanced twisted-pair (Category 5e and above) and multimode optical fiber; coaxial is not a recognized horizontal medium.

Consolidation point: a single transition point in horizontal cabling, no more than one per horizontal run, located in accessible ceiling or floor space.

MUTOA serves multiple work areas; its patch cord length plus permanent link must not exceed the 100 m channel limit.

Minimum bend radius rule of thumb: 4x cable OD for UTP during installation and 10x OD for fiber (varies by fiber type and manufacturer).

Separation from power: maintain at least 305 mm (12 in) from unshielded power lines unless a barrier or calculated separation per applicable codes is used.

Pathway fill: keep cable bundle cross-section to about 40 percent of conduit internal area for existing (40%) and 31 percent for new pulls to allow future growth.

Balanced twisted-pair categories: Cat 5e (100 MHz), Cat 6 (250 MHz), Cat 6A (500 MHz), Cat 8 (2,000 MHz) rated to 30 m channels.

Cat 6A supports 10GBASE-T to 100 m; Cat 6 supports 10GBASE-T only to about 55 m in bundled conditions.

Shielded/FTP systems require proper grounding and bonding at both ends to control common-mode noise and EMI.

Fiber types: OM1 62.5/125, OM2 50/125, OM3/OM4 laser-optimized 50/125 multimode; OS1/OS2 single-mode.

Fiber connector polish: PC, UPC (ultra-physical contact) and APC (angled physical contact, 8-degree); never mate APC with UPC.

T568A and T568B pin/pair assignments differ in pairs 2 and 3; both are acceptable if used consistently across the installation.

Cable jacket ratings: CMP (plenum), CMR (riser), CM (general), CMX (limited use); plenum spaces require CMP or equivalent low-smoke cable.

Insertion loss budget for fiber = cable loss (dB/km x length) + connector loss (typically 0.75 dB per mated pair) + splice loss (about 0.3 dB each).

Entrance facility (EF) is where outside plant meets inside plant; it houses entrance cables, protectors, and demarcation.

Equipment room (ER) houses major cross-connects and active equipment; it is distinct from a telecommunications room (TR).

TR serves a floor or portion of a floor; each TR should serve a maximum usable floor area of about 1,000 m2 (10,000 ft2) with horizontal distances limited to 90 m.

TR sizing: at least 3.3 m2 (35 ft2) for the first 100 m2 of served area plus 0.1 m2 per additional 10 m2, with minimum dimensions about 2.4 m x 3.0 m.

TR environmental targets: temperature 18-27 C (64-81 F), relative humidity 30-55 percent, and positive pressure with filtered air.

TR requires dedicated electrical: at least two dedicated duplex outlets on separate circuits, plus lighting at 500 lux and a minimum door width of 0.9 m (3 ft).

Cross-connect types: main cross-connect (MC), intermediate cross-connect (IC), and horizontal cross-connect (HC).

Vertical backbone cabling runs between EF/ER and TRs; horizontal cabling runs from HC to work areas.

Pathway types: conduit, cable tray, raceway, underfloor duct, cellular floor, and ceiling pathways; each has defined fill and support rules.

Conduit fill per common practice: 1 cable = 53 percent, 2 cables = 31 percent, 3 or more cables = 40 percent of interior cross-section.

Support horizontal cable at intervals not exceeding 1.5 m (5 ft) and within 300 mm (12 in) of boxes and terminations.

J-hook and cable tray support: maintain cable bend radius and avoid exceeding manufacturer fill recommendations.

Sleeves through walls/floors should be at least 100 mm (4 in) and firestopped to the rated assembly.

Telecommunications bonding backbone (TBB) ties together TRs; the telecommunications main grounding busbar (TMGB) is in the EF/ER.

Grounding conductor sizing follows local electrical code; bonding conductors are typically 6 AWG for TBB and 2 AWG or larger for the TMGB.

Horizontal pathways must be separated from power and other EMI sources and must maintain the channel length limit of 100 m total.

Ethernet media standards: 1000BASE-T over Cat 5e/6 to 100 m; 10GBASE-T over Cat 6A to 100 m; 40/100GBASE-SR over OM3/OM4 short distances.

PoE standards: 802.3af (15.4 W at PSE), 802.3at (30 W), and 802.3bt (60 W Type 3 and 90 W Type 4).

PoE cable heating: bundled cables carrying PoE current derate; higher temperature and larger bundles reduce allowable current per conductor.

Wireless: 802.11ax (Wi-Fi 6) and 802.11be (Wi-Fi 7) require adequate AP density, channel planning, and backhaul over Cat 6A or fiber.

DAS (distributed antenna system) and small cells extend cellular coverage inside buildings using fiber or coax distribution.

IP video surveillance and access control require dedicated VLANs, PoE budgets, and adequate uplink capacity.

Data center topologies include Top-of-Rack (ToR) and End-of-Row (EoR); spine-leaf designs support east-west traffic scaling.

Power over Ethernet budgeting: sum device draw plus cable loss (about 10 percent) and reserve headroom for future loads.

Project phases: initiation, planning, execution, monitoring/control, and closure; each phase produces defined deliverables.

Scope baseline = scope statement + work breakdown structure (WBS) + WBS dictionary; changes require formal change control.

Critical path method (CPM): the longest path through the network determines minimum project duration; float is schedule slack.

Earned value: CV = EV - AC, SV = EV - PV, CPI = EV/AC, SPI = EV/PV; CPI or SPI below 1.0 indicates unfavorable performance.

Risk management includes identification, qualitative/quantitative analysis, response planning, and monitoring; responses are avoid, mitigate, transfer, accept.

Procurement documents include RFP, RFQ, and IFB; contract types: fixed-price, cost-reimbursable, time and materials.

Quality management uses inspection, testing, and acceptance criteria defined in the statement of work and specifications.

Stakeholder communication plan defines audience, frequency, format, and escalation paths for project reporting.

As-built documentation includes floor plans, pathway layouts, cable schedules, and rack elevation drawings.

Cable labeling: unique identifier per cable, both ends labeled, and record kept in the administration database or spreadsheet.

Administration records include the record of the telecommunications space, cable records, and grounding/bonding records.

Test reports for copper include wire map, length, insertion loss, NEXT, and return loss; fiber reports include insertion loss and length.

Change management: every configuration change updates the administration records and as-built drawings.

Documentation should be delivered in both native and PDF formats, with revision numbers and dates.

Asset inventory tracks equipment serial numbers, rack locations, ports, and warranty/maintenance dates.

Class and administration per TIA-606: classes 1-4 define labeling and record-keeping scope from simple to full automated management.