GB 50311-2016 Code for Engineering Design of Generic Cabling System

General Provisions

• 第 1.0.1 条This code is formulated to standardize the engineering design of generic cabling systems, achieve advanced te…
• 第 1.0.2 条This code applies to the engineering design of generic cabling systems for new construction, expansion, and r…
• 第 1.0.3 条The structured cabling system should meet the information transmission requirements of the hotel building and…
• 第 1.0.4 条The engineering design of the generic cabling system shall use standard products that comply with the relevan…
• 第 1.0.5 条The generic cabling system design shall be coordinated with the hotel building's functional zoning, interior …
• 第 1.0.6 条The engineering design of generic cabling systems shall, in addition to complying with this code, also comply…

Terminology

• 第 2.1.1 条Cabling system: a system composed of cables, connecting hardware and related components used for information …
• 第 2.1.2 条Information point: an interface in the cabling system used to connect terminal devices. Information points sh…
• 第 2.1.3 条Horizontal cabling subsystem: cabling from the floor distribution frame to the information outlet. Hotel floo…
• 第 2.1.4 条Backbone subsystem: cabling from the main distribution frame to the floor distribution frames. Hotel building…
• 第 2.1.5 条Campus subsystem: cabling that connects multiple buildings. If a hotel includes detached villas, a conference…
• 第 2.1.6 条Equipment room: space for installing the main distribution frame and communication equipment. The hotel requi…
• 第 2.1.7 条Incoming line room: the interface space where external communication lines enter the building. Hotels need to…
• 第 2.1.8 条Management: The operations of labeling, recording, and adjusting the cabling system. Hotels need to establish…

System design

• 第 7.1.1 条The structured cabling system shall support voice, data, image and multimedia services, and shall meet the in…
• 第 7.1.2 条Hotel buildings should divide cabling subsystems according to functional areas; guest room areas should adopt…
• 第 7.1.3 条Information outlets (voice and data) in each hotel guest room should be configured with no fewer than 2 singl…
• 第 7.2.1 条The installation height of the workspace information outlet back box should preferably be 300 mm (guest room …
• 第 7.2.3 条In large space areas such as the hotel lobby, banquet hall, and meeting rooms, sufficient floor or wall infor…
• 第 7.3.2 条The cable length of the horizontal subsystem shall not exceed 90 m. If CP points are used in the hotel guest …
• 第 7.3.4 条Horizontal cabling in hotel guest room areas should use 4 pair twisted pair cable (Cat.6 or above) to meet th…
• 第 7.4.1 条The backbone subsystem should support the transmission of voice, data, and video surveillance signals between…
• 第 7.5.1 条Equipment rooms (e.g., ELV/telecom rooms) should be located on the hotel's ground floor or basement level 1, …
• 第 7.6.2 条Telecom rooms (floor weak current rooms) should preferably be provided on each floor, with an area of not les…
• 第 7.7.1 条Hotel buildings should adopt fiber to the room (FTTR) or fiber to the building (FTTB) access methods to accom…

System Configuration

• 第 4.1.3 条Hotel buildings should classify cabling system levels according to business requirements, building scale and …
• 第 4.2.1 条Each guestroom unit shall be provided with 1 information point (data/voice universal), and at least 1 informa…
• 第 4.2.2 条Public areas such as the hotel lobby, meeting rooms, and multi function halls shall be equipped with informat…
• 第 4.2.3 条In hotel buildings, each work area (e.g., front desk, office) should be equipped with 2 or more information o…
• 第 4.5.2 条The equipment room (BD) should be located on the hotel's first floor or basement level 1, with an area of no …
• 第 4.6.3 条Hotel buildings should provide cabling provisions for wireless access points (APs); in public areas such as t…

System configuration

• 第 4.2.4 条In guest rooms, fiber to the home (FTTH) or Cat5e/Cat6 cabling should be used to meet HDTV, broadband interne…
• 第 4.3.2 条Horizontal subsystem: Each information point should be provided with an independent horizontal cable, the len…
• 第 4.4.1 条Backbone subsystem: The hotel should be provided with independent ELV risers, with a floor distribution room …

Equipment Installation

• 第 6.0.1 条The equipment room (e.g., the hotel's ELV/weak current room) should be located away from sources of electroma…
• 第 6.0.5 条Cables inside the cabinet shall be neatly bundled with appropriate slack reserved; cables entering the cabine…
• 第 6.0.9 条When cables are laid in cable trays or trunking, the fill ratio shall not exceed 50%; when laid in concealed …

Equipment installation

• 第 6.0.2 条Telecom rooms (floor low voltage shafts/wiring closets) shall be provided independently, with an area of not …
• 第 6.0.3 条Temperature and humidity requirements for equipment rooms and telecom rooms: the temperature should be 10℃–35…
• 第 6.0.4 条The clear distance between the front of the cabinet (or rack) and the wall shall not be less than 800 mm, and…
• 第 6.0.6 条Installation height of information outlets (guest rooms and public areas): the bottom edge should preferably …
• 第 6.0.7 条Information outlets shall use 8 pin modular universal outlets (RJ45) and shall maintain a spacing of not less…
• 第 6.0.8 条In hotel guest rooms, each information outlet (data/voice) shall be cabled independently to the floor distrib…
• 第 6.0.10 条When cables penetrate floor slabs or firewalls, firestop materials shall be used to seal the openings, and th…

Cable routing

• 第 7.1.1 条Wiring in hotel buildings shall be routed in metal raceways or enclosed cable trays, and firestop measures sh…
• 第 7.1.3 条The bottom box of the information outlet in guest rooms should be at a height of 0.3 m above the floor, and t…
• 第 7.2.2 条Horizontal subsystem cables should be installed in metal conduits or flame retardant PVC conduits; when insta…
• 第 7.2.4 条Pre embedded conduit routing should be adopted in hotel guest room areas. Each guest room should be provided …
• 第 7.3.1 条The vertical backbone subsystem shall be installed in metal cable trays or cable shafts. Cables in the shaft …
• 第 7.3.3 条Weak current risers in hotel buildings shall be provided independently and shall not be shared with strong cu…
• 第 7.4.2 条When routing cables in public areas (e.g., lobbies, meeting rooms, corridors), avoid pipes of fire protection…
• 第 7.5.1 条When cables are laid in cable trays or trunking, the fill ratio shall not exceed 40%; when laid in conduits, …
• 第 7.5.3 条All cables in the hotel building should be clearly identified, and permanent labels should be provided at bot…
• 第 7.6.2 条Communication cables introduced into the hotel from outdoors shall be buried underground; overvoltage protect…

Shielding and grounding

• 第 7.0.1 条When the structured cabling system adopts a shielded cabling system, it shall have a good grounding system an…
• 第 7.0.2 条The shielding layer of a shielded cabling system shall be continuous and shielded throughout. Within the hote…
• 第 7.0.3 条Grounding of shielded cabling systems should use single point grounding. When two or more grounding electrode…
• 第 7.0.4 条Information outlets in work areas (such as guest rooms, meeting rooms, and lobbies) shall be shielded informa…
• 第 7.0.5 条Wiring equipment (such as cabinets and patch panels) in the telecommunications room (weak current room) shall…
• 第 7.0.6 条When the structured cabling system adopts a shielded cabling system, its cables and connecting hardware shall…
• 第 7.0.7 条When the structured cabling system uses an unshielded cabling system, its metal trunking, cable trays and met…
• 第 7.0.5条 条Public areas and equipment rooms : Weak current equipment rooms, weak current distribution rooms, and large s…

Acceptance

• 第 4.1.1 条The hotel building shall determine the configuration level of the cabling system (e.g., basic, enhanced, comp…
• 第 4.2.1 条Hotel guest room area: The quantity and location of information points (data, voice) in each guest room shall…
• 第 4.2.3 条Hotel public areas (lobby, restaurant, meeting rooms): cabling provisions for wireless access points (APs) sh…
• 第 4.3.2 条Hotel weak current room (telecom room/equipment room): area, environment (temperature and humidity, grounding…
• 第 4.4.1 条Cable selection: The performance grade of horizontal cables (e.g., Cat5e, Cat6 and above) and backbone cables…
• 第 4.5.2 条Conduits and trunking: The conduit/trunking specifications, routing, and fire rating (e.g., flame retardant, …
• 第 4.6.1 条Grounding and lightning protection: The grounding resistance value (typically ≤1Ω) and equipotential bonding …

Engineering reference only — verify against project conditions and the latest codes.