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TB 10063-2007

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Detail Information of TB 10063-2007; TB10063-2007
Description (Translated English): Code for design on fire prevention of railway engineering
Sector / Industry: Railway & Train Industry Standard
Classification of Chinese Standard: P16; P65
Classification of International Standard: 93.100
Word Count Estimation: 67,651
Date of Issue: 2007-12-29
Date of Implementation: 2007-12-29
Older Standard (superseded by this standard): TB 10063-1999
Drafting Organization: Third Railway Survey and Design Institute Group Co., Ltd.
Administrative Organization: ?PRC Ministry of Railways
Regulation (derived from): Ministry of Railways (website)
Summary: This standard applies to new construction, renovation railway engineering fire protection design. This specification does not apply to railway projects in the underground stations, underwater tunnels, underground tunnels and other special buildings, structures and working pressure greater than 1. 6 MPa of A, B, C liquid and gas pipeline crossing the railway fire protection design.

TB 10063-2007
Code for design on fire prevention of railway engineering
UDC
People's Republic of China industry standards
Railway Engineering Design Fire Code
Posted on.2007-12-29
2007-12-29 implementation
People's Republic of China Ministry of Railways released
People's Republic of China industry standards
Railway Engineering Design Fire Code
Compiling institutes. Third Railway Survey and Design Institute Group Co., Ltd.
Approved by. People's Republic of China Ministry of Railways
Implementation Date. December 29,.2007
Foreword
This code is based on the Ministry of Railways "on the issuance of.2005 railway construction standards
Planned Notice "(Railway Construction Letter ﹝.2005 ﹞ 84) requirements, in the original" Railway Engineering
Gauge fire prevention norms "(TB 10063-99) based on the revised.
This specification in the revision process, conscientiously summed up in recent years, fire protection design of railway engineering
Experience, analysis, drawing on the national fire safety design standards.
Engineering and technical personnel must be in accordance with the "people-oriented, service transport, strong at the end of the system
Optimization and focus on development "concept of railway construction, combined with the specific circumstances of the project, according to local conditions,
Give full play to subjective initiative, and actively adopt safe, reliable, advanced, mature, economical, suitable
Use of new technologies, can not be mechanically rigid standard. Investigation and design units to implement (or adopt) single
Or local standards, does not relieve the design unit and the designer of the overall project and system functions
The amount of questions should bear the legal responsibility.
This code is divided into 10 chapters and 4 appendices, the main contents include. General, fire hazard
Sex classification and fire rating, fire clearance, combustible liquid and combustible gas pipeline through the railway,
Fire Lane, Building Fire Zoning and Building Construction, Fire Water and Fire Extinguishing Facilities, Ventilation,
Air conditioning and smoke, smoke, electrical, railway tunnels and so on.
The main contents of this revision are.
1. Added the contents of this project does not apply.
2. Revised locomotive depot, depot, moving section () and other major production of fire hazards
Sexual classification and explosion, fire hazard classification of the level of content.
3. Modify the platform steel canopy using unprotected conditions and scope.
4. Revised the railway line and part of the B project warehouse and open-air, semi-open-air yard and
Liquid, gas storage tank fire spacing.
5. Increase traction transformer substation traction and railway lines, gas stations, oil
Storage tank, combustible, combustion gas storage tank fire spacing.
6. A, B and C liquids have been revised and combustible gas pipes have been intersected and strengthened with the railway
Protection of the relevant provisions.
7. An increase of passenger station, port station tanker change line (library), industrial station, move
Depot (the), large-scale maintenance machinery section, container and luggage base set up fire lane range.
8. Increase the passenger station waiting area (room), partition fire district maximum allowable building
Building area can be increased to 10000 ㎡ restrictions and passenger station distribution hall, ticket office,
Waiting area may not be set entertainment and small meals can be set to passenger services, zero of goods
Conditions such as the sale of the provisions.
9. Increase the installation of smoke and fire facilities and automatic alarm or set combustible gas detection
Installation site provisions.
10. An increase of various types of station platforms, oil refill lines and fire tunnel layout
Tying requirements.
11. Revised the set of closed sprinkler underground luggage, parcel warehouse,
Cargo warehouse area and fire area requirements.
12. Increase the provision of rescue tunnels within the tunnel, emergency exit provisions.
13. The provision of automatic fire extinguishing and smoke exhaust systems in tunnels has been added.
14. An increase of 5.0km above the tunnel to set the accident alarm call provisions.
15. Added 1.0km straight tunnel and 0.5km curved tunnel evacuation and rescue corridor
Set evacuation lighting and evacuation instructions.
16. An increase of 5.0km and above passenger and freight cross-country railway tunnel equipped with fire-fighting facilities
Provisions.
The provisions of this code marked in bold are mandatory provisions and must be strictly implemented.
In the process of implementing this code, I hope all units combine engineering practice, sum up experience and accumulation
data. If any changes or additions are found, please send us your opinion and relevant information in time
Road Third Survey and Design Institute Group Co., Ltd. (Zhongshan Road, Hebei District, Tianjin, Post
Coding. 300142), and copied to the Ministry of Railways Economic Planning Institute (Beijing Haidian District, Square
A shop on the 8th, zip code. 100038) for future reference when the amendment.
This code is interpreted by the Ministry of Railways Construction Management Division.
Compiling units and draftsmen of this code.
Compiling institutes. Third Railway Survey and Design Institute Group Co., Ltd.
Participating institutions. Shenyang Railway Public Security Bureau
The main drafters. Li Jing Zhao Jianhua Liu Ruijun Sun Ruichang Wang Qian
Yang Qiang Han Qun Lin Weidong Du Baojun think Thursday
Ma Yuzhen An Yuhong Wu Guohua Zhai Yihong Wang Tieshan
Liu Yeqing Zhao Xin Chen Xingqiang Li Tongxi Li Yongzeng
Zhang Yaguang
Directory
1 General (1)
2 fire hazard classification and fire rating (2)
3 fire distance (3)
3.1 Line (3)
3.2 maintenance, vehicle facilities (5)
4 Combustible liquids and combustible gases Pipeline crossing (7)
4.1 Pipeline crossing (7)
4.2 pipe through the bridge and culvert (8)
4.3 pipeline crossing station (8)
5 Fire Lane (9)
Station (9)
5.2 locomotives, vehicles, moving sections () (10)
6 Building Fire Protection Zoning and Building Construction (12)
Passenger Station (12)
6.2 Electrical Equipment Housing (12)
6.3 Plant (warehouse) (13)
6.4 Others (15)
7 Fire water supply and fire fighting facilities (16)
7.1 Outdoor fire water supply (16)
7.2 indoor fire to (19)
7.3 Fire extinguishing facilities (19)
8 Ventilation, Air Conditioning and Smoke and Exhaust (22)
8.1 Ventilation, air conditioning (22)
8.2 Smoke and fume extraction (22)
9 Electrical (24)
9.1 Automatic fire alarm (24)
9.2 Wire & Cable (25)
9.3 Lightning protection, explosion proof (25)
10 Railway Tunnels (26)
Appendix A Fire Hazard Classification for Major Production Houses (29)
Appendix B Major Production Sites Explosion and Fire Hazard Ratings Zoning (30)
Appendix C Starting point of fire prevention distance (31)
Appendix D Fire extinguisher configuration of the main production sites Hazard classifications (32)
The specification wording (33)
"Railway Engineering Design Code" Provisions (34)
1 General
1.0.1 In order to ensure the safety of railway transportation and people's lives and property,
Anti-based, anti-combined with "the fire work guidelines to prevent and reduce fire hazards, the development of this code.
1.0.2 This standard applies to new, rebuilt railway engineering fire protection design.
This standard does not apply to railway construction in underground stations, underwater tunnels, underground tunnels and other special construction
Buildings, structures and work pressure is greater than 1.6MPa A, B, C liquid and gas pipeline fire protection design across the railway.
1.0.3 Railway engineering fire protection design must comply with the relevant state laws, regulations and guidelines and policies, the correct place
Manage production and safety, focus and general relations, and actively adopt effective and advanced fire prevention technology to achieve safety
Applicable, economical and reasonable.
1.0.4 Fire engineering design of railway engineering, in addition to the implementation of this specification, should still meet the relevant provisions of the current national standards.
2 fire hazard classification and fire rating
2.0.1 locomotive depot, depot, moving section (), the power supply section, comprehensive maintenance base (section), large-scale support
Road machinery section, parcel express base, transit warehouse, port station tanker change line (library) and other major production houses
Housing fire hazard classification and explosion, fire hazard classification of the environment should be in accordance with Appendix A, B of the Code.
2.0.2 Bus preparation and repair garage, motor vehicle maintenance library (check library), mechanical insulation truck and ice insulation truck
Overhaul warehouse refractory grade should not be lower than two. Other types of production, living housing fire rating should not be less than two.
2.0.3 locomotive depot, depot spray booth, paint depot, station goods warehouse, transformer section transformer oil
When the filter room adopts steel truss frame, the parts affected by flames of combustible gas or combustible liquid should be protected by fire,
Fire resistance should not be less than 1.0h.
2.0.4 station platform awning fire rating should not be less than two. There are pillars awning can be used when the steel structure
Use of non-fire protection of metal components. No platform post awning steel structure, from the rail surface can be adopted more than 12m
No fire protection of metal components.
3 fire spacing
3.1 line
3.1.1 The spacing of fire between railway lines and buildings shall not be less than that specified in Table 3.1.1.
Table 3.1.1 railway lines and building fire protection spacing
Fire Spacing (m) Serial number Housing name Other lines
A Class A production plant for the distribution of flammable gases and flammable vapors
2 A, B production plant (not including the No. 1 plant) 30 25
3 A, B items warehouse 50 40
4 Other Productive and Non-Productive Houses 20 10
Note. 1 Fire clearance starting point should be consistent with the provisions of Appendix C of this specification.
2 fireworks, firecrackers, blasting equipment factories and warehouses and railway lines between the protective distance should
Meet the current national standards of the relevant provisions.
3 The housing in No. 4 in this table, facing the railway side wall as a firewall or set the fire resistance limit of 3.0h
And higher than the rail 4.0m fire wall, the fire may be appropriate to reduce the spacing, but should not be reduced to 50%.
3.1.2 The fire prevention distance between the open circuit and semi-open circuit yard of railway lines and combustible materials shall not be less than that specified in Table 3.1.2.
Table 3.1.2 railway lines and open-air, semi-open space fire pit spacing
Note. W is the weight of combustible material; V is the volume of combustible material.
3.1.3 railway lines and A, B, C liquid storage tank, combustible, combustion gas storage tanks and other fireproof spacing
It shall not be less than that specified in Table 3.1.3.
Table 3.1.3 railway lines and liquid, gas storage tank fire spacing
Note. 1 buried single tank volume less than or equal to 100m3 A, B liquid horizontal tank and other evapotranspiration
The fire clearance between tank A and B liquid tank and railway line heavier than air can be reduced according to this table
50%, Class C liquid tanks can be reduced by 25% on the basis of this table and this note, but after reduction
The horizontal distance between Class A, B and C liquid storage tanks and railway lines shall not be less than 15m.
2 buried single tank volume less than or equal to 50m3 and the total capacity of not more than 400m3 liquefied petroleum gas storage
Tanks and railway lines can be reduced by 50% of the fire table.
3 The other lines in this table refer only to special lines. The lines in the stations should be implemented according to the positive lines.
3.1.4 for railway transport production operations of houses, yards, storage tanks and railway lines can be fireproof spacing
Not subject to the rules 3.1.1, 3.1.2, 3.1.3 of the restrictions, but should meet the relevant requirements of the current national standards.
3.1.5 A, B, C liquid pipelines and combustible gas pipelines laid parallel to the railway or erection,
The fire prevention distance with the adjacent railway lines shall not be less than 25m and 50m, respectively, and shall not be less than 3.0m away from the railway boundary.
B, C liquids and LP combustible gas pipelines directly connected to railway lines
Fire spacing should not be less than 5m.
3.1.6 Railway land should not be planted with oleaginous plants.
3.1.7 When the railway passes the forest area, it shall be set that the distance from the center of forest projection from the center of the line outside the railway should not be less than
30m fire isolation zone.
3.1.8 railway through the focus of grassland fire zone, it should be set from the railway boundary and grassland edge should not be less than
20m fire isolation zone.
3.2 maintenance, vehicle facilities
3.2.1 Washing line should be flat-topped type, the terminal parking spaces to the car hook safety distance should not be less than 20m.
3.2.2 washing tank line with the surrounding fire prevention spacing should not be less than the provisions of Table 3.2.2.
Table 3.2.2 Washing line and buildings, structures fire spacing
3.2.3 Traction Substation traction transformer from the recent railway line fire prevention spacing should not be small
At 25 m. When in the mountains, the fire can be appropriately reduced spacing.
3.2.4 traction substation traction transformer and flammable, explosive place fire prevention spacing should not
Less than the provisions of Table 3.2.4.
Table 3.2.4 Traction substation traction transformer and flammable and explosive place spacing
Note. 1 Horizontal tank of Class A, B and C liquids with a single tank volume less than or equal to 50m3 and a total volume less than or equal to.200m3
Storage tanks, fire protection can be reduced by 50% of this table.
2 buried single tank volume less than or equal to 50m3 and the total capacity of not more than 400m3 liquefied petroleum gas tank, fireproof spacing
According to the table reduced by 50%.
4 combustible liquid and combustible gas pipeline through the railway
4.1 pipe through the line
4.1.1 Class A, B, C liquid and combustible gas pipelines and rail sections of the line cross,
Should meet the following requirements.
1 Pipe should be under the railway, and should be used orthogonal, must be crossed when the angle should not be less than
45 °;
2 A, B, C liquid and combustible gas pipelines on the cross-railway, the supporting structure
The fire rating should be one level. The pipe wall within 20m from the outside of the two outermost line centers
Thickness should be increased by one level, within the scope of the flange, valves and other piping components should not.
4.1.2 When A, B, C liquid and combustible gas pipeline under the railway, should make use of both
There are facilities to avoid crossing the roadbed, when it is necessary to cross the roadbed, should meet the following requirements.
1 A, B, C liquid and combustible gas pipeline should be laid in the protective culvert, culvert
At both ends of the cave, the embankment slope protection culverts shall not be less than 2m in length and shall not exceed 5m in length,
And apply non-burning materials to seal the end wall;
2 A, B liquid and combustible gas pipe at the end of the protective culvert should be set inside diameter
Ventilation riser not less than 50mm and not less than 20m from nearest railway line. Tube end
Should be higher than the ground where 4m, there should be no open fire and spark within 20m points;
3 pipeline protection culverts on both sides of the 5m within the scope of soil is not allowed to plant deep-rooted plants and repair
Build other buildings, structures;
4 On the upper side of the foot of the protector slope on both sides of the line, away from the outer wall of the protective culvert
1.5m Department should be set obvious signs pile.
4.2 pipeline through the bridge
4.2.1 A, B, C liquids and combustible gas pipeline is strictly prohibited laid on the railway bridge,
And should not cross above the bridge.
4.2.2 The new railway line spans a variety of existing Class A, B and C liquids and combustible gas pipes
Road, the intersection should be set up dedicated bridges and culverts. Beam to the bridge under the bridge to cover the oil and gas pipelines
The distance of natural ground shall not be less than 2.0m.
Railway bridges under the oil, gas pipe or steel pipe used in concrete, culverts and other protection
In addition to the equipment should meet the requirements of Article 4.1.2 of this code, casing or culvert top to natural
The surface should not be less than 1.8m, the width should not be less than D 2.5m (D is the outer diameter of the conveying pipe, including the protective layer).
4.2.3 A, B, C liquid and combustible gas pipeline is strictly prohibited in the existing railway culverts
Inside through. Pipes and roads, drains crossing the same railway bridge openings, should be laid in the road or water
Under the surface, and buried depth of not less than 1.8m; railway bridge beam to the bottom of the bridge to cover oil,
Gas pipeline natural ground distance of not less than 2.0m.
4.3 pipeline crossing station
4.3.1 Class A, B, C liquid and combustible gas pipelines should not be above the station or across
Below the crossing; prohibited above the railway marshalling yard and passenger stations across or below the cross.
4.3.2 roads, roads prohibited in the hazardous chemicals freight yard, washing cans, port station tank trucks
Change line (library), dangerous chemicals industrial station, Harbor Station above the span. Neither should be in the area
Sex and above marshalling yard arrival field, shunting yard, departure area effective long range and warehouse building
The total area of 3000m2 and above the freight yard, container cargo area of 10000m2 and above
Over the freight yard.
5 fire engine lane
5.1 station
5.1.1 Passenger station, section station, marshalling station, port station Change tanker truck (bank), danger
Concentration of hazardous chemicals industrial station (Harbor Station), the motorcade (the), maintenance (reentry) section, the car
Depot, bus preparedness, comprehensive maintenance base (section), parcel express base and freight yard, large
Maintenance-type mechanical section, washing tank fire lanes should be set, and roads, roads should be connected.
Fire Lane and railway line plane intersection, and the intersection of the annual average number of round-trip train
More than 100 times, should be set up to cross the roadway.
The following places should be located circular fire engine lane.
1 large, extra large railway passenger station;
2 preparedness, storage, repair line in 15 and above the bus repair or moving depot
(Office);
3 warehouse building a total area of 3000 m2 and above the freight yard;
4 warehouse building a total area of 1000m2 and above dangerous chemicals freight yard;
5 Yard with a total area of 10000 m2 and above;
6 container cargo area in l0000m2 and above the freight yard;
7-way network marshalling station;
8 port station tanker for wheelhouse.
5.1.2 yard or marshalling yard yard, shunting when the number of lines is 10 to 18, should be
In the shunting yard set firefighting lanes; when the shunting line number is 19 and above, should be transferred
There are fire-fighting lanes on both sides of the yard; fire-fighting lanes of shunting yard should be interconnected. Regional and above
Marshalling Station starting side should be set fire lane. Fire engines should be close to the parking lot, away from the nearby
The line should not be larger than 25 m.
5.1.3 large, large passenger station should use the basic platform as a fire engine lane.
5.1.4 Station Fire-fighting lane can be used through the station road, station road and other traffic roads. Traveler
Station platform as a fire engine lane, the site of the buildings, structures edge to platform edge
The edge of the distance should not be less than 3.0m, 4.0m height range without obstacles.
The circular fire-fighting lane should have no less than two roads connecting with other lanes. Shunting yard
Fire Lane can not be set back to the yard.
5.2 locomotives, vehicles, moving sections ()
5.2.1 bus, mechanical insulation car line and passenger cars, EMUs, large road maintenance machinery
Car line should be set parallel with the fire line, and should meet the following requirements.
1 When the distance between the outermost two sides of the lane line area is less than or equal to 80m, it should be set
A fire engine lane, and should have a return location;
2 The spacing between the outermost two sides is more than 80m, two fire-fighting lanes should be provided when the distance between the two sides is less than or equal to 160m;
3 When the distance between two outermost sides is more than 160m, three fire-fighting lanes should be set;
4 When two or more fire service lanes are provided, the fire service lanes shall be interconnected;
5 shares between the hardened ground can also serve as a fire lane, its net width should not be less than 3.5m;
6 When the bus curb, the depot (the) of the bus, EMU storage line number
More than 5, the car line and curb line between the group, the EMU car line should be set between the fire engine lane.
6 building fire district and building structure
6.1 Passenger station
6.1.1 Railway passenger station waiting area and the distribution hall when each of the following conditions, each of its defense
Fire district maximum allowable building area can be expanded to 10000 ㎡.
1 Set in the first floor, single-storey elevated floor, or half of the direct external evacuation exit and mining
With the second floor of the staircase closed indoor;
2 with automatic sprinkler system, smoke facilities and automatic fire alarm system;
3 interior decoration design in line with the current national standard "fire protection design of interior decoration design" (GB 50222) of the relevant provisions.
6.1.2 Passenger terminals within the distribution hall, ticket office and waiting area may not be set entertainment.
Medium-sized and above stations can be set up for the passenger service without fire operations catering, merchandise
Retail outlets, but the building area should not exceed 100 ㎡, and should be used fireproof limit 1.0h fire
Partition walls and roofs, but also set the fire alarm, automatic sprinkler system.
6.1.3 When the waiting area (room) is located at the top of the passenger station building, and the indoor ground and distribution
Hall ground height of not more than 10m, although the building height is greater than 24m, the fire design can still press
The current national standard "architectural design code for fire protection" (GB 50016) regulations.
6.2 Electrical Equipment Housing
6.2.1 The following building should be used with a fire resistance of not less than 2.0h wall and 1.5h
Floor and other rooms separated from the room door and other rooms connected with the door should be B fire doors.
1 communication hub of various communications machinery room and fire control room;
2 dispatch center (station) and the station signal machinery room, communication machinery room;
3 Information Technology Center (including driving, scheduling, ticketing) of the host room, network transmission
Room, operation room, media library and fire control room;
4 vehicle safety precaution system room and electric railway traction power supply remote system
Control station room;
5 interval communication, signal sharing relay station.
6.2.2 The following housing construction should be used with a fire resistance of not less than 2.0h wall and 1.5h
Floor separated from other rooms, room doors and doors connected with other rooms should be Class A fire doors.
1 traction substation main control room, transformer room, capacitor room, transformer room;
2 10kV and above substation control room, high voltage distribution room.
6.2.3 Communication Machinery Room, Signal Machinery Room, Information Technology Center Room, Electrified Iron
Road traction power supply remote control station, vehicle safety precaution system room and 10kV and
The above change, distribution, traction substation (sub-district, opening and closing, autotransformer place) of
Cable wells should be used with fire-resistant limit of not less than 1.0h envelope structure, located in the room inspection gate
Class B fire doors or fire shutter should be used. Other buildings within the cable wells and wells set seized
Check the fire safety requirements, should be consistent with the current national standard "architectural design code for fire protection"
(GB 50016) of the relevant provisions.
6.3 plant (warehouse)
6.3.1 Depot, depot, moving section (), comprehensive maintenance base (section), large
Maintenance of road machinery section of the paint shop, paint shop should be set separately. When meet the following conditions, can be set
At the joint workshop end.
1 with fire resistance limit of not less than 3.0 hours of fire shutter separated;
2 library storage room, paint room, drying room and other ancillary buildings should be fire-resistant
The limit of not less than 3.0h firewall and Class A fire doors;
3 using light roof or have enough doors and windows to ensure relief pressure area, the ground should be used
Non-sparking building materials;
4 No storage of office, lounge or locker room in the library
5 set pit maintenance pit, pit should be taken to reduce the concentration of aerosol measures.
6.3.2 acid battery charging room should be built separately. When combined with other houses should be set
Outside, and should be separated by a firewall with a fire resistance of not less than 3.0h and should not be built above
Other houses.
There shall be no door or window between the charging room and the adjacent duty room and power distribution room;
Class A fire doors, windows. When the roof has a skylight or close to the ceiling symmetrically set not less than 2 ㎡ of the ventilation window, and
Roof no greater than or equal to 0.2m high beam partition, you can not consider the pressure relief.
6.3.3 depot (), moving section of the joint workshop set paints shop, paint shop and transfer
A, B oil storage room should be arranged near the outer wall. Paint, solvents and A, B oil products
Reserve should not exceed one day's usage.
6.3.4 Locomotive depot, depot, moving section (the) between the diesel pump and the grease should be released between
Located on the ground.
6.3.5 Hazardous chemicals Cargo warehouse warehouse should be separately classified according to the dangerous goods,
Chemical properties similar to the same fire extinguishing methods can be combined to build a warehouse and should meet the following requirements.
A roof should be double insulated roof and easy to release pressure of lightweight materials to do the roof;
2 The ground should be from the gate to the indoor downhill;
3 Treasury should be used to open out of the non-metallic doors, windows or hanging windows, when subjected to the platform
Width limit, the side can be used to pull the door, but should be set at a width of not less than 0.8m without a threshold out
Evacuation door
4 floor and 3m below the inner wall should be used non-sparking building materials.
6.3.6 railway logistics center warehouse fire rating should not be less than two. Its life, office,
Warehousing, packing, trading and other different functional areas, should be divided according to the different nature of the fire district.
Fire protection design shall comply with the relevant provisions of the current national standard "Code for Fire Protection of Building Design" (GB 50016).
6.4 Other
6.4.1 stations equipped with mobile fire pumps and fire-fighting equipment, should set the size is not small
5.0m2 fire equipment storage room.
6.4.2 Fireproof partition members throughout the building through-hole, cable trench gap should be
According to the current national standards, "Building blockade Technical Regulations" (CECS154) of the relevant regulations
Determined to take fire blocking measures.
6.4.3 Roads, cross-rail overpass or pedestrian bridge on the road should be on the outside of the bridge
Set a fence on the wall or railings and extend beyond 6.0 m from the outermost railway line.
The overpass or pedestrian bridge adjacent to the railway shall be provided with protection on the railway side of the bridge
network. Within the scope of the railway station flyover, protective net should be extended to the bridge.
Protective net height should not be less than 2.2 m, mesh should not be greater than 0.25 cm2.
6.4.4 Wash line work Trestles should be constructed of non-combustible material.
Related standard:   TB 10063-2016
   
 
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