This specification is formulated to implement the national technical and economic policies in municipal engineering surveys, to achieve advanced technology, economic rationality, safety and applicability, and to ensure quality. This specification is applicable to bridges and culverts, pedestrian underpasses, and overpasses within urban planning areas; outdoor water supply and drainage, gas and heat, and oil and gas pipelines; flood control walls, flood control (slope) embankments, and revetments of urban roads and square parking lot projects. CJJ 56-1994 Municipal Engineering Survey Specification CJJ56-1994 Standard download decompression password: www.bzxz.net

Engineering Construction Standard Full Text Information System
Industry Standard of the People's Republic of China
Code for municipal engineering investigation and surveying
1994Beijing
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Industry Standard of the People's Republic of China
Code for municipal engineering investigation and surveying
1994Beijing
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Industry Standard of the People's Republic of China
Code for municipal engineering investigation and surveying surveying
CJJ56—94
Editing unit: Beijing Municipal Surveying Institute
Approving department: Ministry of Construction of the People's Republic of China Effective date: November 1, 1994
Engineering Construction Standard Full-text Information System
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Engineering Construction Standard Full-text Information System
Notice on the Release of the Industry Standard
"Municipal Engineering Surveying Specifications"
||Jianbiao [1994] No. 338
According to the requirements of the former State Administration of Urban Construction (81) Chengke No. 15 document, the "Municipal Engineering Surveying Specifications" edited by Beijing Municipal Surveying Institute has been reviewed and approved as an industry standard, numbered CJJ56-94, and will be implemented on November 1, 1994. This standard is managed by the Ministry of Construction's Comprehensive Survey Institute, the Ministry of Construction's survey and geotechnical engineering standards and technical unit, and the specific interpretation and other work is the responsibility of the editor-in-chief. It is published by the Ministry of Construction's Standards and Norms Institute. Ministry of Construction of the People's Republic of China
May 26, 1994
Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
General Provisions·
Urban Bridge and Culvert Survey
Urban Outdoor Pipeline Survey.
Urban embankment investigation
Urban road investigation.
Basic requirements for data collation and report preparation 7
Appendix A Unit friction resistance between the outer wall of the caisson and the soil Appendix B
Geotechnical test items
Appendix C
Appendix D
Friction coefficient between the base of the building and the soil (rock) Explanation of terms used in this specification
Additional explanation
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Engineering Construction Standard Full Text Information System
1 General Principles
1 This specification is formulated to implement the national technical and economic policies in municipal engineering surveys, to achieve advanced technology, economic rationality, safety and applicability, and to ensure quality. 1.0.2bzxz.net
2 This specification applies to bridges and culverts, pedestrian underpasses, and overpasses within urban planning areas; outdoor water supply, drainage, gas, heat, and oil and gas pipelines; flood control walls, flood control (slope) embankments and revetments; urban roads, squares, and parking lot engineering surveys.
3 Municipal engineering surveys must be combined with the requirements of municipal engineering construction tasks, and 1.0.3
adapt to local conditions, select and use various survey methods, and provide survey results that meet the requirements of municipal engineering design and construction. In the survey work, effective new technologies (such as remote sensing, electronic computer technology, etc.) and new theories of geological disciplines should be actively adopted. 1.0.4 In addition to complying with this specification, municipal engineering surveys shall also comply with the provisions of relevant national standards in force.
Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
General Provisions
2.0.1 Municipal engineering surveys shall be conducted after the location or planning and design route of the proposed engineering project is determined, and may not be divided into stages. When the requirements of the construction drawing design cannot be met, supplementary surveys may be conducted.
After the excavation of complex foundations and foundation pits (trench) of the proposed important municipal engineering, if the engineering geological conditions do not match the original survey data and may affect the quality of the project, the design and construction units shall cooperate to conduct construction trench inspections. If there are rock engineering problems related to construction that need to be solved, necessary supplementary surveys and monitoring work shall be carried out. 2.0.2
The work content, workload and accuracy requirements of municipal engineering survey shall be implemented in accordance with the provisions of this specification. Under the condition of meeting the design and construction requirements, they may be increased or decreased according to the local municipal engineering construction experience and the actual experience of the project manager. 2.0.3 The work content, work methods and workload of municipal engineering survey shall be determined by comprehensive consideration of the following factors:
2.0.3.1 The category of municipal engineering;
The requirements of municipal engineering design for survey tasks; 2.0.3.3
The complexity of the geographical and geological characteristics and engineering geological conditions of the construction site,
The existing data of the construction site and the degree of research on the characteristics of the engineering geological environment, as well as the local municipal engineering construction experience; 2.0.3.5
The requirements and construction conditions for foundation design. 2.0.4 The construction site of municipal engineering shall be classified according to Table 2.0.4 based on the site conditions and the complexity of the foundation (rock and soil medium for excavation engineering). 2.0.5 In the investigation of urban bridges, culverts, outdoor pipelines and embankment projects, the classification of foundation rock and soil types should be carried out in accordance with the relevant provisions of the current national standard "Code for Design of Building Foundations".
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Site Classification
1. Sites and sections classified according to the current national standard "Building Seismic Design Code" for earthquake fortification intensity of 6 degrees or below, or classified according to the current national standard "Building Seismic Design Code" for earthquake-resistant danger
2. Sites and sections where adverse geological phenomena are strongly developed
are unfavorable for building seismic resistance according to the "Building Seismic Design Code"
2. Sites and sections where adverse geological phenomena are generally developed
are favorable for building seismic resistance
2. Sites and sections where adverse geological phenomena are not developed
are favorable for building seismic resistance
3. Sites where the geological environment has or may be 3. The geological environment has been or may be affected 3. The geological environment is basically intact to severely damaged
4. The topography and landform are complex
to general damage
4. The topography and landform are relatively complex
4. The topography and landform are simple
5. There are many types of rock and soil, and the properties change 5. There are many types of rock and soil, and the properties change 5. The rock and soil are of a single type, and the properties change greatly. The groundwater has a great impact on the project, which is relatively large. The groundwater has no significant impact on the project, and the groundwater has no impact on the project and requires special treatment
6. Complex changes and strong special effects 6. General specialities that do not belong to Class I 6. Non-special rock and soil Special rock and soil
Note: ① Items not listed in the table can be inferred by comparison according to their complexity. ② Starting from Class I, it can be inferred to Class 1 and Class I. If one of the 6 items belongs to Class 1, it is classified as a Class I site, and so on.
3 In the urban road engineering survey, the classification of roadbed soil should be carried out in accordance with the relevant provisions of the current Ministry of Construction 2.0.6
industry standard "Urban Road Design Specifications". 2.0.7 The classification of urban bridges and culverts can be determined according to the single-hole span or the total length of multi-hole spans in accordance with Table 2.0.7.
Urban bridges with a total width greater than or equal to 30m can be upgraded by one category based on the bridge classification in Table 2.0.7.
2.0.8 The types of urban embankments should be divided into the following three categories according to building materials and structural forms:
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
1 Category I: pile embankments (free-style sheet pile walls and anchored sheet pile embankments) 2.0.8.1
and mixed embankments reinforced with pile foundations, etc.;
2.0.8.2 Category I: natural foundation embankments with engineered structures or reinforced concrete structures, including natural foundation embankments such as gravity, semi-gravity, counterweight, cantilever, buttress, and slope embankments.
Class III: earth embankment, including embankment slopes with mortar masonry or dry masonry stone joints. Bridges and culverts are classified by span.
Categories of bridges and culverts
Extra-large bridges
Single-hole span Lo (m)
Lo ≥ 100
40 ≤ Lo < 100
20
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