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Construction Pits (Fall 2010)

Course code : BBGR-T-U1
ECTS Credits : 5 Status : Optional
Revised : 13/04 2010 Written : 12/06 2003
Placement : 6-7 semester Hours per week : 9
Length : 1 semester Teaching Language : English if English students are present

Objective : 1. Construction pits
The student shall gain knowledge about and understanding for the special problems and characteristics of design of Construction Pits with special emphasis on pits with bottom below groundwater table.
The student shall be able to plan the construction and design the structures in a Construction Pit.

The student, who has met the course objectives, are at the final exam able to:
• Analyse and describe the chosen pit project
• Assess the need for and range of dewatering.
• Explain the chosen dewatering method and design a dewatering system.
• Design and calculate retaining walls
• Make slope stability analysis.
• Present and explain choise of final solution
• Present and explain the team cooperation.
Principal Content : Design of open pits:
-Stability of bottom and slopes.
-Dewatering schemes.
-Pile walls (also special walls).
-Anchors and props of retaining walls.
Teaching method : Presentations and assignments, leading to the course project.
Students presentations and discussions. Self tuition
Course Projects are carried out in groups of 2 - 4 students.
Decision on the course project is decided upon by the professors after proposal from the students
Required prequisites : The student must have passed all Theme Courses
Recommended prerequisites : -
Relations : -
Type of examination : Oral examination based on assignments
External examiner : External
Marking : 7 step scale
Remarks : The assessment is based on the course project carried out during the course, and a presentation and discussion about the project, related to the professional subjects of the course
Teaching material : Terzaghi, K., Peck, R.B., Mesri,G.: Soil Mechanics in Engineering Practice, 1996
Construction Dewatering: New Methods and Applications By J. Patrick Powers, 1992
DS 415 Code of practice for foundation.
Birte Rodevang: Introduction til BGR-T
Birte Rodevang: presentation and notes no. 1 Plane Seepage
Birte Rodevang: 1.1 example Plane Seepage
Birte Rodevang: presentation and notes no. 2 Dewatering
Birte Rodevang: 2.2 example circular construction pit
Birte Rodevang: 2.3 example rectangular construction pit B
Birte Rodevang: presentation and notes no.3: Retaining Walls
ARBED Denmark A/S
ARCELOR Long commercial (ALC) Denmark
Birte Rodevang: 3.1 example free sheet pile wall
Birte Rodevang: 3.2 example anchored
Birte Rodevang: 3.3.1 example propped sheet pile wall with 1 prop
Birte Rodevang: 3.3.2 example propped sheet pile wall with 3 props
Birte Rodevang: 3.3.3 example propped sheet pile wall with 2 props
Birte Rodevang: 3.3.4 example propped sheet pile wall with props and water pressure.
Birte Rodevang: 3.4 example calculation of anchor slab.
Birte Rodevang: presentation and notes no. 6 Stability of slopes
Birte Rodevang: notes no. 4 Ground Anchors
Aage Christensen A/S
A/S Skandinavisk Spændbeton/DNE fundering
Birte Rodevang: presentation and notes no.5: Port Design
Zhou Liu and Hans F. Burchardt: Port Engineering, 1999
Coastal Engineering Manual, U.S. Army Corps of Engineers, 2002
Zhou Liu and Peter Frigaard: Generation and analysis of random waves.2001
Birte Rodevang: notes no. 5.1 Anchor length calculation
Birte Rodevang: 5.1.1 example Anchor length calculation
Birte Rodevang: Presentation and notes: Breakwaters
Fentek catalogue
Bean Bollards catalogue
Responsible teacher : Birte Rodevang , brod@dtu.dk