DIN 4033:1979-11

1 Scope
2 Other relevant Standards and documents
      2.1 Standards and documents not relating to
             materials
      2.2 Pipe joints, jointing materials
      2.3 Testing of pressure pipelines
      2.4 Pipe materials
             2.4.1 Asbestos cement
             2.4.2 Concrete, reinforced concrete and
                      prestressed concrete
             2.4.3 Cast iron
             2.4.4 Plastics
             2.4.5 Steel
             2.4.6 Clayware
3 Safety regulations
4 General
      4.1 Definitions
             4.1.1 Pipelines
             4.1.2 Depth of cover
             4.1.3 Vertical projection
             4.1.4 Design trench width
             4.1.5 Pipe bedding
             4.1.6 Embedding
             4.1.7 Pipe zone
             4.1.8 Trench pipelines
             4.1.9 Embankment pipelineselines
             4.1.10 Rigid pipes
             4.1.11 Flexible pipes
      4.2 Structural calculation of the pipeline
      4.3 Loading and installation conditions
             4.3.1 Dead weight
             4.3.2 Water filling
             4.3.3 Depth of cover
             4.3.4 Type of soil
             4.3.5 Live loads
                      4.3.5.1 Loading
                      4.3.5.2 Impact coefficients
             4.3.6 Other loads (e.g. bulk materials)
             4.3.7 Ground water conditions
             4.3.8 Pressure above and below atmospheric
                      in pressure pipelines
             4.3.9 Exceptional loads
             4.3.10 Type and shape of bedding
             4.3.11 Method of laying or installation
                      4.3.11.1 Trench pipeline
                      4.3.11.2 Embankment pipeline
      4.4 Checking the load assumptions
5 Execution of pits and trenches
      5.1 Excavation of trench
      5.2 Bottom of trench
             5.2.1 Preparing of trench bottom
             5.2.2 Dewatering of trench bottom
6 Bedding
      6.1 Bedding on natural soil
             6.1.1 Bedding on non-cohesive soil with
                      maximum particle size 20 mm
             6.1.2 Bedding on cohesive soil
             6.1.3 Bedding on other soils
      6.2 Bedding on placed sand, gravel or concrete
             6.2.1 Bedding on sand and gravel-sand
             6.2.2 Bedding on concrete
      6.3 Concrete casing
      6.4 Special arrangements
7 Installation of pipes and parts of pipelines
      7.1 Loading and unloading, transporting at site
      7.2 Storage
      7.3 Lowering into the pipe trench
      7.4 Laying
      7.5 Connection to structures
      7.6 Connection to an existing pipeline
      7.7 Supporting and anchoring
      7.8 Special measures in the case of aggressive
             waters and soils
8 Pipe joints
9 Testing of pipelines
      9.1 Checking line and level
      9.2 Testing for watertightness
             9.2.1 Watertightness of pipe joints
             9.2.2 Watertightness of gravity pipelines
                      9.2.2.1 Preparation of test
                      9.2.2.2 Filling of pipeline
                      9.2.2.3 Test pressure and test
                                 duration
                      9.2.2.4 Addition of water during
                                 test
             9.2.3 Internal pressure testing of pressure
                      pipelines
10 Embedding and covering the pipeline
      10.1 Embedding
      10.2 Covering
      10.3 Removal of sheeting
11 Testing of pipeline and manholes after covering
      11.1 Pipelines
      11.2 Manholes
      11.3 Test of deformation
Further Standards