Standard No.:	CJJ 56-2012
English Name:	Code for municipal engineering investigation and surveying
Chinese Name:	市政工程勘察规范
Professional Classification:	CJ    Professional Standard - Urban Construction
Source Content Issued by:	MOHURD
Issued on:	2012-12-24
Implemented on:	2013-5-1
Status:	valid
Superseding:	CJJ 56-1994 Code for municipal engineering investigation and surveying
Target Language:	English
File Format:	PDF
Word Count:	41000 words
Translation Price(USD):	1020.0
Delivery:	via email in 1 business day

1 General Provisions 1.0.1 This code is formulated with a view to implementing the national technical and economic policies, achieving safety, applicability and advanced technology, ensuring quality and protecting environment in the geotechnical investigation of municipal engineering projects. 1.0.2 This code is applicable to geotechnical investigation of urban roads, bridges and culverts, tunnels, outdoor pipelines, water supply and drainage facilities, waterfront embankments and other construction projects. 1.0.3 Municipal engineering projects must be subjected to geotechnical investigation in accordance with the capital construction procedures, for which the existing data and construction experience shall be collected, analyzed, and used, and the investigation report with complete information and correct evaluation shall be proposed according to the characteristics of municipal engineering project, the task requirements of each investigation phase, and the geotechnical conditions. 1.0.4 In addition to this code, the geotechnical investigation of municipal engineering projects shall also comply with those stipulated in the current relevant standards of the nation.   2 Terms 2.0.1 waterfront embankment bank slope and slope protection structure of which the stability has direct influence on the embankment 2.0.2 engineering surroundings a general term for surrounding buildings (structures), existing municipal engineerings, surface water bodies and other environmental objects that affect the design, construction, and operation of municipal engineering projects 2.0.3 rock and soil condition engineering characteristics of rock and soil mass that have an impact on the design and construction of municipal engineering projects, including the types, physical and mechanical properties and uniformity of rock and soil, the engineering properties of surrounding rock or foundation and side slope, and the special rock and soil   3 Basic Requirements 3.0.1 The geotechnical investigation of municipal engineering projects shall be classified according to the importance of municipal engineering projects, the complexity of the site and the complexity of rock and soil condition, and shall meet the following requirements: 1 The importance level of municipal engineering projects shall be classified according to the characteristics of the projects in accordance with Table 3.0.1-1. Table 3.0.1-1 Classification of the Importance Level of Municipal Engineering Projects Engineering category Level I Level II Level III Road engineering Expressway and trunk road Secondary trunk road Branch road, and road and ground engineering of bus stations and urban squares Bridge and culvert engineering Grand bridge and large bridge Urban bridges and culverts except those of Levels 1 and 3 Small bridge, culvert and pedestrian underpass Tunnel engineering All is in accordance with Level I — — Outdoor pipeline engineering Construction with pipe jacking or directional drilling method All is in accordance with Level I — — Construction with cut and cover method z>8m 5m≤z≤8m z<5m Water supply and drainage facility engineering Large- and medium-sized facilities Small-sized facilities — Waterfront embankment engineering Pile type waterfront embankment or mixed waterfront embankment with pile foundation reinforced Natural-foundation waterfront embankment of masonry structure or reinforced concrete structure Earth embankment Notes: 1 According to the relative relationship between the design pavement elevation and the original ground elevation, road engineering may be classified into general subgrade, high embankment, steep slope embankment and cutting. The engineering importance level of high embankment, steep slope embankment and cutting shall be increased by one level based on those listed in Table 3.0.1-1; 2 z is the excavation depth of the foundation pit of pipeline engineering. 2 The site complexity level of municipal engineering projects shall be classified in accordance with Table 3.0.1-2.

1 General Provisions 2 Terms 3 Basic Requirements 4 Working Phases and Basic Scope of Work; 4.1 General Requirements 4.2 Feasibility Study Investigation 4.3 Preliminary Investigation 4.4 Detailed Investigation 5 Urban Road 5.1 General Requirements 5.2 Feasibility Study Investigation 5.3 Preliminary Investigation 5.4 Detailed Investigation 6 Urban Bridge and Culvert 6.1 General Requirements 6.2 Feasibility Study Investigation 6.3 Preliminary Investigation 6.4 Detailed Investigation 7 Urban Tunnel 7.1 General Requirements 7.2 Feasibility Study Investigation 7.3 Preliminary Investigation 7.4 Detailed Investigation 8 Urban Outdoor Pipelines 8.1 General Requirements 8.2 Feasibility Study Investigation 8.3 Preliminary Investigation 8.4 Detailed Investigation 9 Urban Water Supply and Drainage Facilities 9.1 General Requirements 9.2 Feasibility Study Investigation 9.3 Preliminary Investigation 9.4 Detailed Investigation 10 Urban Waterfront Embankment 10.1 General Requirements 10.2 Feasibility Study Investigation 10.3 Preliminary Investigation 10.4 Detailed Investigation 11 Basic Requirements for Report Preparation 11.1 General Requirements 11.2 Descriptive Report and Inclusive Material Appendix A Rock and Soil Test Items Appendix B Shaft Resistance of Open Caisson During Sinking Appendix C Surrounding Rock Classification Appendix D Friction Coefficient between Base and Soils (Rocks) Explanation of Wording in This Code List of Quoted Standards