BE-02 Open cut method Lesson: Utility Trench Construction

The installation of underground utilities is still mainly performed using the open cut method. Depending on the execution, the different pipe-soil systems used exhibit varying external loads on the pipe system. To understand these relationships, the geotechnical and hydrogeological basis for the characterization of soils is explained.

Upon the successful completion of this lesson, you will be able to:

differentiate between soil types,
describe the effects of particle shape and particle size distribution on the properties of the soil,
understand the effect of free moving underground water, and
determine the effects of water permeability on the structural properties of the soil.

Slides in this presentation

1.	Geotechnology
2.	Geotechnology (2)
3.	Subsoil - Geomechanical Principles
4.	Geomechanical Principles
5.	Subsoil - Geomechanical Principles
6.	Unconsolidated Soil
7.	Definition of Unconsolidated Soil
8.	Unconsolidated Soil: Backfill
9.	Unconsolidated Soil Type, Grain Shape, Grain Size
10.	Soil Types
11.	Main Types of Soil
12.	Non-Cohesive Soil
13.	Cohesive Soil
14.	Organic (Organogenic) Soil
15.	Organic Soil Types
16.	Volcanic Soil
17.	Grain Shape
18.	Grain Shape (1)
19.	Grain Shape (2)
20.	Grain Size Distribution
21.	Why Is Grain Size Distribution Important?
22.	Soil Particle Size Scales for Soil Classification Purposes
23.	Grain Size Distribution
24.	Grain Size Distribution Using Sieve Analysis and Hydrometer Method
25.	Grain Size Curve
26.	Graphical Classification of Grain Sizes
27.	Example of Determining the Grain Size Distribution of a Soil Sample
28.	Grain Size Distribution of Non-Cohesive Soils
29.	Curve Parameters
30.	Effective Grain Sizes
31.	Curve Parameters
32.	Coarse Soil Classification Based on Curve Parameters
33.	Very Coarse Soil Classification
34.	Why Is It Important to Know the Coefficient of Uniformity?
35.	Why Is It Useful to Know the Grain Size Distribution of the Soil?
36.	Soil Condition
37.	Soil Condition
38.	Relative Density
39.	Importance of Relative Density
40.	Types of Bedding
41.	Relative Density of Non-Cohesive Soils
42.	Soil Composition
43.	Important Soil Characteristic Parameters
44.	Relative Density
45.	Relative Density of Non-Cohesive Soils: Classification
46.	Standard Test to Determine the Relative Density of the Soil
47.	Proctor Compaction Test
48.	Consistency and Plasticity
49.	Consistency and Plasticity
50.	Determining the Consistency of Cohesive Soil
51.	Soil Consistency
52.	Soil Plasticity
53.	Consistency and Plasticity
54.	Plasticity Index
55.	Classification of Fine Soils Subject to the Liquid Limit
56.	Parameters for Liquid Limit, Plastic Limit and Plasticity Index
57.	Physical Characteristics of Soil
58.	Soil Classification
59.	Soil Classification (2)
60.	Non-Cohesive Soil Classification
61.	Cohesive Soil Classification
62.	Organic Soil Classification
63.	Organic Fine-Grained Soil Classification
64.	Soil Classification as per EN ISO 14688-1
65.	Soil Classification as per AASHTO
66.	Tunnelman's Ground Classification System (TGCS)
67.	Soil Compactibility Classes
68.	Soil Compactibility Classes (2)
69.	Cohesive Soil Characteristics
70.	Hydrogeological Basics
71.	Hydrogeology
72.	When Is Hydrogeology Useful?
73.	Why Are Site Specific Hydrogeological Investigations Useful?
74.	Groundwater
75.	What Is Groundwater?
76.	Groundwater
77.	Groundwater Layers
78.	Groundwater Distribution in the Soil
79.	Water Permeability of Soil
80.	Soil Permeability
81.	Soil Permeability Coefficient
82.	Soil Permeability Coefficient (2)
83.	How to Determine the Soil Permeability Coefficient? (1)
84.	How to Determine the Soil Permeability Coefficient? (2)
85.	How to Determine the Soil Permeability Coefficient? (3)
86.	Influence of the Hydraulic Gradient on the Soil Permeability Coefficient
87.	Calculation of Soil Permeability Coefficient Based on Particle Diameter
88.	Beyer Nomogram for Determining the Soil Permeability Coefficient
89.	End of Lesson

Prof. Dr.-Ing. Stein & Partner GmbH (2016)

Domain

Limiting conditions