This document outlines a presentation on diaphragm wall construction. It introduces diaphragm walls as reinforced concrete structures constructed using a slurry technique developed in Europe, with thicknesses from 300mm to 1200mm and depths up to 45m. The document then describes the method of constructing diaphragm walls which involves installing guide walls, pre-excavation, lowering reinforcement cages, and secondary excavation. Common applications are listed as providing support for deep basements, retaining walls, and stability for landslides or highway cuts. Key considerations for site selection include site conditions, geology, subsurface data, depth of overburden, anticipated stresses, and techno-economic factors.

1. Prepared by
Prof. Ashish Makwana
Civil Engineering Dept. - MEFGI
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2. PRESENTATION
OUTLINE…
1. Introduction
2. Uses
3. Site selection criteria
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3. INTRODUCTION
• Type – reinforced cement concrete
• Slurry technique used for construction and
technique was developed in Europe
• Thickness – 300 mm to 1200 mm and depth – upto
45 m
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4. Method of construction of
Diaphragm wall Construction
• Guide wall installation for diaphragm walls.
• Pre-excavation for diaphragm wall installation.
• Primary panel excavation for diaphragm wall
construction.
• Slurry cleaning and demanding for diaphragm wall
construction.
• Diaphragm wall joints.
• Reinforcement cage lowering and concrete
trimming.
• Secondary panel excavation for diaphragm wall
construction.
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5. Application of diaphragm wall
construction
• Commonly used in congested area.
• Practically more suitable for deep basements.
• Used in conjunction with “Top down” construction
technique.
• Walls constructed very close to the exiting structure
without any vibration.
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6. Uses of diaphragm wall
construction
• Gives the structural support for the construction of
building basements with underground parking.
• Used for retaining wall construction in the areas.
• Provides stability to landslides, highway cuts and
deep building excavations.
• Constructed ahead of time and independent of
other site activities.
• Constructed in relatively low headroom and in the
areas of restricted access.
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7. Site Selection Criteria for
Diaphragm wall construction
• Site condition
• Geological features of site
• Perviousness' of sub-surface data
• Depth of overburden features
• Anticipated stress and deformations caused by
embankment construction and reservoir loading
conditions.
• Techno-economic considerations.
• Availability of construction materials.
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8. THANK YOU
Prof. Ashish Makwana 8