GB 50289-1998 Specification for comprehensive planning of urban engineering pipelines
Some standard content:
Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
GB5028998
Code of Urban Engineering Pipeline Comprehensive Planning
1998—12—07
1999—05—01
State Administration of Quality and Technical Supervision
Ministry of Construction of the People's Republic of China
Engineering Construction Standard Full-text Information System
Jointly Issued
Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
Code of Urban Engineering Pipeline Comprehensive Planning
Planning
GB5028998
Competent department: Ministry of Construction of the People's Republic of ChinaApproving unit: Ministry of Construction of the People's Republic of ChinaImplementation date: May 1, 1999
Beijing 1998
Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
Notice on the Release of the National Standard "Urban Engineering Pipeline Comprehensive Planning Specifications"
Construction Standards [1998] No. 246
In accordance with the requirements of the State Planning Commission's "1992 Engineering Construction Standard Formulation and Revision Plan" (Appendix 2 to Document No. 490 of Planning and Development [1992]), the "Urban Engineering Pipeline Comprehensive Planning Specifications" organized and formulated by our ministry has been reviewed by relevant departments and approved as a mandatory national standard, numbered GB5028998, and will be implemented on May 1, 1999. This code is managed by our department, interpreted by Shenyang Planning and Design Institute, and published by China Construction Industry Press organized by the Standard and Quota Research Institute of the Ministry of Construction.
Ministry of Construction of the People's Republic of China
December 7, 1998
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
2Underground Laying
General Provisions
Direct Burial Laying
......
Comprehensive Pipeline Trench Laying
3Overhead Laying
Appendix Explanation of Terms Used in This Code
Additional Explanations
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Engineering Construction Standard Full Text Information System
1 General Principles
1.0.1 This specification is formulated to rationally utilize urban land, coordinate the location of engineering pipelines in the above-ground and underground spaces of the city, coordinate the relationship between engineering pipelines and between urban engineering pipelines and other projects, and provide a basis for the planning, design and planning management of engineering pipelines.
1.0.2 This specification is applicable to the comprehensive planning of engineering pipelines in the urban master plan (including zoning plan) and detailed planning stages.
1.0.3The main contents of the comprehensive planning of urban engineering pipelines include: determining the arrangement order of urban engineering pipelines when laid underground and the minimum horizontal clearance and minimum vertical clearance between engineering pipelines; determining the minimum cover depth of urban engineering pipelines when laid underground; determining the plane position of pipelines and poles when urban engineering pipelines are laid overhead and the minimum horizontal clearance and minimum vertical clearance between surrounding buildings (structures), roads, and adjacent engineering pipelines.
1.0.4The comprehensive planning of urban engineering pipelines should pay attention to short-term construction planning and take into account the needs of long-term development.
1.0.5The comprehensive planning of urban engineering pipelines should be reasonably arranged in combination with the development of the city and make full use of the above-ground and underground space in the city. 1.0.6The comprehensive planning of urban engineering pipelines should be coordinated with professional planning such as urban road traffic, urban residential areas, urban environment, water supply projects, drainage projects, thermal engineering, power engineering, gas engineering, telecommunications engineering, flood control engineering, and civil air defense engineering. 1.0.7 In addition to implementing this specification, the comprehensive planning of urban engineering pipelines shall also comply with the provisions of the relevant current national standards and specifications. 1
Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
2 Underground Laying
2.1 General Provisions
2.1.1 Urban engineering pipelines should be laid underground. 2.1.2 The plane position and vertical position of the engineering pipelines should adopt the coordinate system and elevation system of the city system.
2.1.3 The comprehensive planning of engineering pipelines shall comply with the following provisions: 2.1.3.1 It should be combined with the urban road network planning, and the line should be short without hindering the normal operation, maintenance and reasonable occupation of land of the engineering pipelines. 2.1.3.2 The existing engineering pipelines should be fully utilized. When the existing engineering pipelines cannot meet the needs, they can be abandoned or replaced after comprehensive technical and economic comparisons. 2.1.3.3 Plain cities should avoid areas with soft soil, earthquake fault zones, subsidence areas, and unfavorable areas with high groundwater levels. Mountainous cities with large undulations should reasonably arrange the location of engineering pipelines in accordance with the characteristics of urban terrain, and should avoid landslide danger zones and flood peaks.
2.1.3.4 The layout of engineering pipelines should be coordinated with the underground concealed projects such as underground railways, underground passages, and civil air defense projects in the city's current situation and planning. 2.1.4 When preparing the comprehensive planning and design of engineering pipelines, the intersection of pipelines at road intersections should be reduced. When there is a conflict in the vertical position of engineering pipelines, it should be handled in accordance with the following regulations:
1 Pressure pipelines give way to gravity pipelines:
2.1.4.2 Bendable pipelines give way to non-bendable pipelines; 2.1.4.3 Branch pipelines give way to trunk pipelines;
2.1.4.4 Small-diameter pipelines give way to large-diameter pipelines. 2.2 Direct Buried Laying
Water supply, drainage, gas and other engineering pipelines in severe cold or cold areas should determine the depth of soil covering according to the depth of soil freezing: The depth of soil covering for engineering pipelines such as heat, telecommunications, power cables and other engineering pipelines in areas other than severe cold or cold areas should be determined according to the soil properties and the load borne by the ground. The minimum depth of soil covering for engineering pipelines shall comply with the provisions of Table 2.2.1. Minimum depth of soil covering for engineering pipelines (m)
Deepness of soil covering
Power pipelines
Direct pipeline trench
Telecommunication pipelines
Direct buried pipeline trench
Heat pipelines
Note: The depth of soil covering for direct power cable pipelines above 10kV should not be less than 1.0m. 6
2.2.2 The planned location of engineering pipelines under the road should be arranged under the sidewalk or non-motorized vehicle lane. Engineering pipelines such as telecommunication cables, water supply and transmission, gas transmission, sewage and rainwater drainage can be arranged under non-motorized vehicle lanes or motor vehicle lanes. 2.2.3 The planned location of engineering pipelines under the road should be relatively fixed. The order of parallel arrangement from the road red line to the road center line should be determined according to the nature and burial depth of the engineering pipelines. Engineering pipelines with few branch lines, deep burial, short maintenance cycle, flammable, flammable and damage that affect the safety of the building foundation should be kept away from the building. The arrangement order should be: power cable, telecommunication cable, gas distribution, water supply and distribution, heat main line, gas transmission, water supply and transmission, rainwater drainage, sewage drainage. 2.2.4 The order of parallel arrangement of engineering pipelines from the building line in the courtyard to the outside direction should be determined according to the nature and burial depth of the engineering pipelines. The arrangement order should be: power, telecommunication, sewage drainage, gas, water supply, heat. When the gas pipeline can be introduced on either side of the building and meet the requirements, the gas pipeline should be arranged on the side with fewer pipelines. 2.2.5 The engineering pipelines planned along the urban roads should be parallel to the center line of the road, and the main pipeline should be close to the side with more branch pipelines. The engineering pipeline should not be transferred from one side of the road to the other.
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Pipeline Name
Water Supply Pipe
Building
d<200mm
d>200mm
Sewage and Rainwater Drainage Pipe
Heat Pipe
Power Cable
Telecommunication Cable
0.005MP<0.02MPa
0.2MPa<0.4MPa
0.4MPa<<0.8MPa
0.8MP<<1.6MPa
Trees (center)
Communication lighting
and <10k
High-voltage iron tower
Foundation edge
Road curb edge
Railway rail (or slope foot)
Note: *See Table 3.0.9.
Engineering Construction Standard Full Text Information System
Minimum horizontal clearance between engineering pipelines and between them and buildings (structures) (m)2
Water supply pipe
200|200
Gas pipe
Medium-pressure high
Heat pipe
1.03.02.50.71.52.04.06.02.50.51.0
2 .51.01.5
DN300mm0.4
DN>300mm0.5
1.01.53.01.5
Engineering Construction Standard Full Text Information System
For urban trunk roads with a road red line width exceeding 30m, water supply and distribution pipelines and gas distribution pipelines should be arranged on both sides of the road: For urban trunk roads with a road red line width exceeding 50m, drainage pipelines should be arranged on both sides of the road.
2.2.6 Various engineering pipelines should not be laid directly buried in the vertical direction. 2.2.7 Engineering pipelines laid along railways and highways should be parallel to the railway and highway lines. When engineering pipelines intersect with railways and highways, they should be arranged in a vertical crossing manner; if conditions are limited, they can be arranged in an inclined crossing manner, and the minimum crossing angle should be greater than 30%. 2.2.8 Engineering pipelines laid on the riverbed should be selected in stable river sections, and the burial depth should be determined based on the principle of not hindering the regulation of the river channel and the safety of the pipelines. When laying engineering pipelines under a river channel, the following provisions shall be met:
2m or less;
When laying under a waterway of level 1 to 5, it shall be at the design elevation of the waterway bottom 2.2.8.2 When laying under other waterways, it shall be at the design elevation of the river bottom 1m or less; 2.2.8.3 When laying under an irrigation canal, it shall be at the design elevation of the canal bottom 0.5m or less.
2.2.9 The minimum horizontal clearance between engineering pipelines and between them and buildings (structures) shall comply with the provisions of Table 2.2.9. When it is difficult to meet the requirements due to factors such as road width, section and the location of existing engineering pipelines, the minimum horizontal clearance can be reduced after taking safety measures according to the actual situation.
2.2.10 For engineering pipelines with a buried depth greater than the foundation of a building (structure), the minimum horizontal distance between them and the building (structure) shall be calculated according to the following formula, and after converting into a horizontal clearance, it shall be compared with the value in Table 2.2.9, and the larger value shall be adopted. L=(Hh)+a
where L is the horizontal distance from the center of the pipeline to the edge of the building (structure) foundation (m); H-
pipeline laying depth (m);
h—building (structure) foundation bottom masonry depth (m); a excavation trench width (m);
a——soil internal friction angle ().
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
2.2.11 When engineering pipelines are laid crosswise, the arrangement order from the ground surface downward should be: power pipelines, heat pipelines, gas pipelines, water supply pipelines, rainwater drainage pipelines, and sewage drainage pipelines.
The elevation of the engineering pipelines at the intersection should be determined according to the elevation of the drainage pipelines.
The minimum vertical clearance when engineering pipelines cross should comply with the provisions of Table 2.2.12. Minimum vertical clearance (m) when engineering pipelines cross Sequence
Pipeline below
Clearance (m)
Line name
Pipeline above
Water supply pipeline
Sewage and rainwater drainage pipeline
Heat pipeline
Gas pipeline
Ditch (foundation bottom)
Culvert (foundation bottom)
Tram (track bottom)
10Railway (track bottom)
Sewage and rainwater
Drainage
Telecommunication pipeline
Table 2.2.12
Power pipeline
Straight pipeline trench
Note: The minimum vertical clearance between straight power cables greater than 35kV and heat pipelines should be 1.00m. 2.3 Integrated trench laying
When encountering one of the following situations, engineering pipelines should be laid in an integrated trench.
Motorway with busy traffic or many engineering pipeline facilities, urban trunk roads, and engineering sections such as underground railways and grade separations. 2.3.1.2 Sections where excavation is not suitable.
2.3.1.3 Squares or intersections of main roads. 2.3.1.4 Roads where more than two engineering pipelines and multi-circuit cables need to be laid at the same time.
The intersection of roads and railways or rivers.
2.3.1.6 Sections where the road width is difficult to meet the requirements of direct burial of multiple pipelines. 2.3.2 Telecommunication cable pipelines, low-voltage power distribution cable pipelines, water supply pipelines, heat supply pipelines, and sewage and rainwater drainage pipelines should be laid in the integrated trench. 2.3.3 Engineering pipelines that do not interfere with each other in the integrated trench can be set in the same small room of the trench; engineering pipelines that interfere with each other should be set in different small rooms of the trench. Telecommunication cable pipelines and high-voltage power transmission cable pipelines must be set separately: water supply pipelines and drainage pipelines can be laid on one side of the integrated trench, and drainage pipelines should be laid at the bottom of the integrated trench.
2.3.4 The laying of the integrated trench for the trunk line of the engineering pipeline should be set under the motor vehicle lane, and its covering depth should be determined comprehensively based on factors such as road construction, vehicle load, structural strength of the integrated trench, and local freezing depth; the integrated trench for laying engineering pipeline branches should be set under the sidewalk or non-motorized lane, and its burial depth should be determined comprehensively based on factors such as the structural strength of the integrated trench and local freezing depth. 7
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
3 Overhead Laying
3.0.1 Overhead laying of engineering pipelines along fences, riverbanks, building (structure) walls and other areas that do not affect the urban landscape within the urban planning area should be combined with the detailed urban planning of the areas where the engineering pipelines pass.
3.0.2 The location of engineering pipelines laid overhead along urban roads should be determined according to the cross-section of the planned roads, and should ensure smooth traffic, safety of residents and normal operation of engineering pipelines.
3.0.3 Overhead line poles should be set on the sidewalk at a distance of no more than 1m from the curb; for roads with dividing strips, overhead line poles should be arranged in the dividing strips. 3.0.4 Overhead power poles and telecommunication overhead poles should be erected on both sides of the road respectively, and on the same side as the underground cables of the same type. 3.0.5 Engineering pipelines of the same nature should be installed on the same pole. 3.0.6 Overhead thermal pipelines should not be laid across overhead transmission lines and feeder lines of electrified railways. When crossing is necessary, protective measures should be taken. 3.0.7 When engineering pipelines cross rivers, it is advisable to use pipeline bridges or traffic bridges for laying, and the following provisions should be met: 3.0.7.1 Combustible and flammable engineering pipelines should not cross rivers using traffic bridges. 3.0.7.2 When engineering pipelines cross rivers using bridges, their planning and design should be combined with the bridge design.
3.0.8 The minimum horizontal clearance between overhead pipelines and buildings (structures) should comply with the provisions of Table 3.0.8.
3.0.9 The minimum vertical clearance when overhead pipelines cross should comply with the provisions of Table 3.0.9.
Engineering Construction Standards Full-text Information System7 Engineering pipelines laid along railways and highways should be parallel to the railway and highway lines. When engineering pipelines intersect railways and highways, they should be arranged in a vertical crossing manner; if conditions are limited, they can be arranged in an inclined crossing manner, and the minimum crossing angle should be greater than 30%. 2.2.8 Engineering pipelines laid on the riverbed should be selected in stable river sections, and the burial depth should be determined based on the principle of not hindering the regulation of the river channel and the safety of the pipelines. When laying engineering pipelines under the river channel, the following provisions should be met:
2m or less;
When laid under the first to fifth level waterways, it should be at the design elevation of the waterway bottom 2.2.8.2 When laid under other river channels, it should be at the design elevation of the river bottom 1m or less; 2.2.8.3 When laid under irrigation channels, it should be at the design elevation of the channel bottom 0.5m or less.
2.2.9 The minimum horizontal clearance between engineering pipelines and between them and buildings (structures) should comply with the provisions of Table 2.2.9. When it is difficult to meet the requirements due to factors such as road width, section and the location of existing engineering pipelines, the minimum horizontal clearance can be reduced after taking safety measures according to the actual situation.
2.2.10 For engineering pipelines with a buried depth greater than the foundation of a building (structure), the minimum horizontal distance between it and the building (structure) should be calculated according to the following formula, and after being converted into a horizontal clearance, it should be compared with the values in Table 2.2.9, and the larger value should be adopted. L=(Hh)+a
Where L is the horizontal distance from the center of the pipeline to the edge of the building (structure) foundation (m); H-
Pipeline laying depth (m);
h—Building (structure) foundation bottom masonry depth (m); a is the width of the excavated trench (m);
a——Soil internal friction angle ().
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
2.2.11 When engineering pipelines are laid crosswise, the order of arrangement from the ground surface downward should be: power pipelines, heat pipelines, gas pipelines, water supply pipelines, rainwater drainage pipelines, and sewage drainage pipelines.
The elevation of the engineering pipelines at the intersection should be determined according to the elevation of the drainage pipelines.
The minimum vertical clearance when engineering pipelines cross should comply with the provisions of Table 2.2.12. Minimum vertical clearance (m) when engineering pipelines cross Sequence
Pipeline below
Clearance (m)
Line name
Pipeline above
Water supply pipeline
Sewage and rainwater drainage pipeline
Heat pipeline
Gas pipeline
Ditch (foundation bottom)
Culvert (foundation bottom)
Tram (track bottom)
10Railway (track bottom)
Sewage and rainwater
Drainage
Telecommunication pipeline
Table 2.2.12
Power pipeline
Straight pipeline trench
Note: The minimum vertical clearance between straight power cables greater than 35kV and heat pipelines should be 1.00m. 2.3 Integrated trench laying
When encountering one of the following situations, engineering pipelines should be laid in an integrated trench.
Motorway with busy traffic or many engineering pipeline facilities, urban trunk roads, and engineering sections such as underground railways and grade separations. 2.3.1.2 Sections where excavation is not suitable.
2.3.1.3 Squares or intersections of main roads. 2.3.1.4 Roads where more than two engineering pipelines and multi-circuit cables need to be laid at the same time.
The intersection of roads and railways or rivers.
2.3.1.6 Sections where the road width is difficult to meet the requirements of direct burial of multiple pipelines. 2.3.2 Telecommunication cable pipelines, low-voltage power distribution cable pipelines, water supply pipelines, heat supply pipelines, and sewage and rainwater drainage pipelines should be laid in the integrated trench. 2.3.3 Engineering pipelines that do not interfere with each other in the integrated trench can be set in the same small room of the trench; engineering pipelines that interfere with each other should be set in different small rooms of the trench. Telecommunication cable pipelines and high-voltage power transmission cable pipelines must be set separately: water supply pipelines and drainage pipelines can be laid on one side of the integrated trench, and drainage pipelines should be laid at the bottom of the integrated trench.
2.3.4 The laying of the integrated trench for the trunk line of the engineering pipeline should be set under the motor vehicle lane, and its covering depth should be determined comprehensively based on factors such as road construction, vehicle load, structural strength of the integrated trench, and local freezing depth; the integrated trench for laying engineering pipeline branches should be set under the sidewalk or non-motorized lane, and its burial depth should be determined comprehensively based on factors such as the structural strength of the integrated trench and local freezing depth. 7
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
3 Overhead Laying
3.0.1 Overhead laying of engineering pipelines along fences, riverbanks, building (structure) walls and other areas that do not affect the urban landscape within the urban planning area should be combined with the detailed urban planning of the areas where the engineering pipelines pass.
3.0.2 The location of engineering pipelines laid overhead along urban roads should be determined according to the cross-section of the planned roads, and should ensure smooth traffic, safety of residents and normal operation of engineering pipelines.
3.0.3 Overhead line poles should be set on the sidewalk at a distance of no more than 1m from the curb; for roads with dividing strips, overhead line poles should be arranged in the dividing strips. 3.0.4 Overhead power poles and telecommunication overhead poles should be erected on both sides of the road respectively, and on the same side as the underground cables of the same type. 3.0.5 Engineering pipelines of the same nature should be installed on the same pole. 3.0.6 Overhead thermal pipelines should not be laid across overhead transmission lines and feeder lines of electrified railways. When crossing is necessary, protective measures should be taken. 3.0.7 When engineering pipelines cross rivers, it is advisable to use pipeline bridges or traffic bridges for laying, and the following provisions should be met: 3.0.7.1 Combustible and flammable engineering pipelines should not cross rivers using traffic bridges. 3.0.7.2 When engineering pipelines cross rivers using bridges, their planning and design should be combined with the bridge design.
3.0.8 The minimum horizontal clearance between overhead pipelines and buildings (structures) should comply with the provisions of Table 3.0.8.
3.0.9 The minimum vertical clearance when overhead pipelines cross should comply with the provisions of Table 3.0.9.
Engineering Construction Standards Full-text Information System7 Engineering pipelines laid along railways and highways should be parallel to the railway and highway lines. When engineering pipelines intersect railways and highways, they should be arranged in a vertical crossing manner; if conditions are limited, they can be arranged in an inclined crossing manner, and the minimum crossing angle should be greater than 30%. 2.2.8 Engineering pipelines laid on the riverbed should be selected in stable river sections, and the burial depth should be determined based on the principle of not hindering the regulation of the river channel and the safety of the pipelines. When laying engineering pipelines under the river channel, the following provisions should be met:
2m or less;
When laid under the first to fifth level waterways, it should be at the design elevation of the waterway bottom 2.2.8.2 When laid under other river channels, it should be at the design elevation of the river bottom 1m or less; 2.2.8.3 When laid under irrigation channels, it should be at the design elevation of the channel bottom 0.5m or less.
2.2.9 The minimum horizontal clearance between engineering pipelines and between them and buildings (structures) should comply with the provisions of Table 2.2.9. When it is difficult to meet the requirements due to factors such as road width, section and the location of existing engineering pipelines, the minimum horizontal clearance can be reduced after taking safety measures according to the actual situation.
2.2.10 For engineering pipelines with a buried depth greater than the foundation of a building (structure), the minimum horizontal distance between it and the building (structure) should be calculated according to the following formula, and after being converted into a horizontal clearance, it should be compared with the values in Table 2.2.9, and the larger value should be adopted. L=(Hh)+a
Where L is the horizontal distance from the center of the pipeline to the edge of the building (structure) foundation (m); H-
Pipeline laying depth (m);
h—Building (structure) foundation bottom masonry depth (m); a is the width of the excavated trench (m);
a——Soil internal friction angle ().
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
2.2.11 When engineering pipelines are laid crosswise, the order of arrangement from the ground surface downward should be: power pipelines, heat pipelines, gas pipelines, water supply pipelines, rainwater drainage pipelines, and sewage drainage pipelines.
The elevation of the engineering pipelines at the intersection should be determined according to the elevation of the drainage pipelines.
The minimum vertical clearance when engineering pipelines cross should comply with the provisions of Table 2.2.12. Minimum vertical clearance (m) when engineering pipelines cross Sequence
Pipeline below
Clearance (m)
Line name
Pipeline above
Water supply pipeline
Sewage and rainwater drainage pipeline
Heat pipeline
Gas pipeline
Ditch (foundation bottom)www.bzxz.net
Culvert (foundation bottom)
Tram (track bottom)
10Railway (track bottom)
Sewage and rainwater
Drainage
Telecommunication pipeline
Table 2.2.12
Power pipeline
Straight pipeline trench
Note: The minimum vertical clearance between straight power cables greater than 35kV and heat pipelines should be 1.00m. 2.3 Integrated trench laying
When encountering one of the following situations, engineering pipelines should be laid in an integrated trench.
Motorway with busy traffic or many engineering pipeline facilities, urban trunk roads, and engineering sections such as underground railways and grade separations. 2.3.1.2 Sections where excavation is not suitable.
2.3.1.3 Squares or intersections of main roads. 2.3.1.4 Roads where more than two engineering pipelines and multi-circuit cables need to be laid at the same time.
The intersection of roads and railways or rivers.
2.3.1.6 Sections where the road width is difficult to meet the requirements of direct burial of multiple pipelines. 2.3.2 Telecommunication cable pipelines, low-voltage power distribution cable pipelines, water supply pipelines, heat supply pipelines, and sewage and rainwater drainage pipelines should be laid in the integrated trench. 2.3.3 Engineering pipelines that do not interfere with each other in the integrated trench can be set in the same small room of the trench; engineering pipelines that interfere with each other should be set in different small rooms of the trench. Telecommunication cable pipelines and high-voltage power transmission cable pipelines must be set separately: water supply pipelines and drainage pipelines can be laid on one side of the integrated trench, and drainage pipelines should be laid at the bottom of the integrated trench.
2.3.4 The laying of the integrated trench for the trunk line of the engineering pipeline should be set under the motor vehicle lane, and its covering depth should be determined comprehensively based on factors such as road construction, vehicle load, structural strength of the integrated trench, and local freezing depth; the integrated trench for laying engineering pipeline branches should be set under the sidewalk or non-motorized lane, and its burial depth should be determined comprehensively based on factors such as the structural strength of the integrated trench and local freezing depth. 7
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
3 Overhead Laying
3.0.1 Overhead laying of engineering pipelines along fences, riverbanks, building (structure) walls and other areas that do not affect the urban landscape within the urban planning area should be combined with the detailed urban planning of the areas where the engineering pipelines pass.
3.0.2 The location of engineering pipelines laid overhead along urban roads should be determined according to the cross-section of the planned roads, and should ensure smooth traffic, safety of residents and normal operation of engineering pipelines.
3.0.3 Overhead line poles should be set on the sidewalk at a distance of no more than 1m from the curb; for roads with dividing strips, overhead line poles should be arranged in the dividing strips. 3.0.4 Overhead power poles and telecommunication overhead poles should be erected on both sides of the road respectively, and on the same side as the underground cables of the same type. 3.0.5 Engineering pipelines of the same nature should be installed on the same pole. 3.0.6 Overhead thermal pipelines should not be laid across overhead transmission lines and feeder lines of electrified railways. When crossing is necessary, protective measures should be taken. 3.0.7 When engineering pipelines cross rivers, it is advisable to use pipeline bridges or traffic bridges for laying, and the following provisions should be met: 3.0.7.1 Combustible and flammable engineering pipelines should not cross rivers using traffic bridges. 3.0.7.2 When engineering pipelines cross rivers using bridges, their planning and design should be combined with the bridge design.
3.0.8 The minimum horizontal clearance between overhead pipelines and buildings (structures) should comply with the provisions of Table 3.0.8.
3.0.9 The minimum vertical clearance when overhead pipelines cross should comply with the provisions of Table 3.0.9.
Engineering Construction Standards Full-text Information System12
Power pipeline
Straight pipeline trench
Note: The minimum vertical clearance between straight power cables greater than 35kV and thermal pipelines should be 1.00m. 2.3 Comprehensive pipeline trench laying
When encountering one of the following situations, engineering pipelines should be laid in a centralized manner using a comprehensive pipeline trench.
Motor vehicle lanes with busy traffic or a large number of engineering pipeline facilities, urban main roads, and areas where underground railways, grade separations, etc. are being built. 2.3.1.2 Sections where excavation of the road surface is not appropriate.
2.3.1.3 The intersection of squares or main roads. 2.3.1.4 Roads where more than two engineering pipelines and multi-circuit cables need to be laid at the same time.
The intersection of roads and railways or rivers.
2.3.1.6 Road sections where the width is difficult to meet for direct burial of multiple pipelines. 2.3.2 Telecommunications cable pipelines, low-voltage power distribution cable pipelines, water supply pipelines, thermal pipelines, and sewage and rainwater drainage pipelines should be laid in the integrated trench. 2.3.3 Engineering pipelines that do not interfere with each other in the integrated trench can be set in the same small room of the trench; engineering pipelines that interfere with each other should be set in different small rooms of the trench. Telecommunications cable pipelines and high-voltage power transmission cable pipelines must be set separately: water supply pipelines and drainage pipelines can be laid on one side of the integrated trench, and drainage pipelines should be laid at the bottom of the integrated trench.
2.3.4 The laying of the integrated trench for the main line of the engineering pipeline shall be set under the motor vehicle lane, and its covering depth shall be determined comprehensively according to factors such as road construction, vehicle load, structural strength of the integrated trench, and local freezing depth; the integrated trench for laying the branch line of the engineering pipeline shall be set under the sidewalk or non-motor vehicle lane, and its burial depth shall be determined comprehensively according to factors such as structural strength of the integrated trench and local freezing depth. 7
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
3 Overhead Laying
3.0.1 The overhead laying of engineering pipelines along the fences, river banks, building (structure) walls and other areas that do not affect the urban landscape in the urban planning area shall be combined with the detailed urban planning of the areas where the engineering pipelines pass.
3.0.2 The location of the engineering pipelines laid overhead along the urban roads shall be determined according to the cross-section of the planned roads, and shall ensure smooth traffic, safety of residents and normal operation of the engineering pipelines.
3.0.3 Overhead line poles should be set up on the sidewalk at a distance of no more than 1m from the curbstone; for roads with lanes, overhead line poles should be arranged in the lanes. 3.0.4 Overhead power poles and telecommunication poles should be erected on both sides of the road, and on the same side as the underground cables of the same type. 3.0.5 Engineering pipelines of the same nature should be installed on the same pole. 3.0.6 Overhead thermal pipelines should not be laid across overhead transmission lines and feeder lines of electrified railways. When crossing is necessary, protective measures should be taken. 3.0.7 When engineering pipelines cross rivers, pipeline bridges or traffic bridges should be used for installation, and the following provisions should be met: 3.0.7.1 Combustible and flammable engineering pipelines should not cross rivers using traffic bridges. 3.0.7.2 When engineering pipelines cross rivers using bridges, their planning and design should be combined with the bridge design.
3.0.8 The minimum horizontal clearance between overhead pipelines and buildings (structures) shall comply with the provisions of Table 3.0.8.
3.0.9 The minimum vertical clearance when overhead pipelines cross shall comply with the provisions of Table 3.0.9.
Engineering Construction Standards Full Text Information System12
Power pipeline
Straight pipeline trench
Note: The minimum vertical clearance between straight power cables greater than 35kV and thermal pipelines should be 1.00m. 2.3 Comprehensive pipeline trench laying
When encountering one of the following situations, engineering pipelines should be laid in a centralized manner using a comprehensive pipeline trench.
Motor vehicle lanes with busy traffic or a large number of engineering pipeline facilities, urban main roads, and areas where underground railways, grade separations, etc. are being built. 2.3.1.2 Sections where excavation of the road surface is not appropriate.
2.3.1.3 The intersection of squares or main roads. 2.3.1.4 Roads where more than two engineering pipelines and multi-circuit cables need to be laid at the same time.
The intersection of roads and railways or rivers.
2.3.1.6 Road sections where the width is difficult to meet for direct burial of multiple pipelines. 2.3.2 Telecommunications cable pipelines, low-voltage power distribution cable pipelines, water supply pipelines, thermal pipelines, and sewage and rainwater drainage pipelines should be laid in the integrated trench. 2.3.3 Engineering pipelines that do not interfere with each other in the integrated trench can be set in the same small room of the trench; engineering pipelines that interfere with each other should be set in different small rooms of the trench. Telecommunications cable pipelines and high-voltage power transmission cable pipelines must be set separately: water supply pipelines and drainage pipelines can be laid on one side of the integrated trench, and drainage pipelines should be laid at the bottom of the integrated trench.
2.3.4 The laying of the integrated trench for the main line of the engineering pipeline shall be set under the motor vehicle lane, and its covering depth shall be determined comprehensively according to factors such as road construction, vehicle load, structural strength of the integrated trench, and local freezing depth; the integrated trench for laying the branch line of the engineering pipeline shall be set under the sidewalk or non-motor vehicle lane, and its burial depth shall be determined comprehensively according to factors such as structural strength of the integrated trench and local freezing depth. 7
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
3 Overhead Laying
3.0.1 The overhead laying of engineering pipelines along the fences, river banks, building (structure) walls and other areas that do not affect the urban landscape in the urban planning area shall be combined with the detailed urban planning of the areas where the engineering pipelines pass.
3.0.2 The location of the engineering pipelines laid overhead along the urban roads shall be determined according to the cross-section of the planned roads, and shall ensure smooth traffic, safety of residents and normal operation of the engineering pipelines.
3.0.3 Overhead line poles should be set up on the sidewalk at a distance of no more than 1m from the curbstone; for roads with lanes, overhead line poles should be arranged in the lanes. 3.0.4 Overhead power poles and telecommunication poles should be erected on both sides of the road, and on the same side as the underground cables of the same type. 3.0.5 Engineering pipelines of the same nature should be installed on the same pole. 3.0.6 Overhead thermal pipelines should not be laid across overhead transmission lines and feeder lines of electrified railways. When crossing is necessary, protective measures should be taken. 3.0.7 When engineering pipelines cross rivers, pipeline bridges or traffic bridges should be used for installation, and the following provisions should be met: 3.0.7.1 Combustible and flammable engineering pipelines should not cross rivers using traffic bridges. 3.0.7.2 When engineering pipelines cross rivers using bridges, their planning and design should be combined with the bridge design.
3.0.8 The minimum horizontal clearance between overhead pipelines and buildings (structures) shall comply with the provisions of Table 3.0.8.
3.0.9 The minimum vertical clearance when overhead pipelines cross shall comply with the provisions of Table 3.0.9.
Engineering Construction Standards Full Text Information System
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