PowerPoint Presentation

[Audio] We are excited to present to you our expertise in the construction of diaphragm walls specifically in cut-and-cover metro structures. Our company has a proven track record of successfully constructing these walls in various soil types and depths. We are committed to ensuring the safety of workers and the public while controlling ground movements. Diaphragm walls are versatile and have different applications in construction. Our team has extensive experience in constructing these walls in various locations and we are confident in our ability to deliver high-quality results in any project. Let us discuss the theory of diaphragm walls and its applications in construction. Thank you..

[Audio] Diaphragm walls are continuous concrete walls built below the ground level before excavation. They were introduced in the construction of the Milan Metro and that method is now known as the Milan Method. Diaphragm walls are widely recognized as important elements in the cut-and-cover construction especially where control of ground movements is critical. They can be used in almost any soil any depth limited only by the capabilities of the equipment. However as compared to other ground support systems diaphragm walls can be relatively expansive..

[Audio] This important technology in special foundation engineering will be discussed..

D’ Wall – Pictorial reference. Slide: 4.

[Audio] Diaphragm Wall DW 01.01 is the first section of our presentation. The installation of Diaphragm Wall involves the construction of a series of wall panels of predetermined thickness and length..

[Audio] Outline the steps involved in building a typical diaphragm wall..

[Audio] The construction sequence of panels in Diaphragm Wall DW 01 is a crucial aspect of the project. The first stage involves excavating panel 1 and inserting stop-end tubes as well as creating a guide trench. The second stage involves pouring tremie concrete panel 1 and removing the stop-end tubes while excavating panel 2 and relocating the stop-end. In the third stage tremie concrete panel 2 is poured and panel 3 is excavated while relocating the stop-end. The fourth stage involves pouring tremie concrete panel 3 and excavating panel 4. We recognize that the construction sequence of panels is a continuous process and there are many more stages involved. However these four stages provide a basic understanding of the construction sequence of panels in Diaphragm Wall DW 01..

[Audio] The Diaphragm Wall is a construction technique used to prevent groundwater from entering a building. It is based on the principle of creating a barrier between the building and the groundwater. Bentonite slurry is a liquid clay mixture used to fill in the space between the guide-wall and the Diaphragm Wall..

[Audio] AFCONS has extensive experience in constructing Diaphragm Walls up to a depth of 55 meters and a width of 62 meters. They have completed several prestigious projects in Mumbai including the Air India Terminal Building the Office Building for New India Assurance Co. Ltd the Hotel Oberoi Sheraton and the I-L-F-S Office Building at Bandra Kurla Complex. Overall AFCONS' experience and expertise in Diaphragm Wall construction make them a trusted partner for any waterfront project in India..

[Audio] Our presentation will focus on the theory of diaphragm wall construction. A diaphragm wall is a technique that enables greater depth to be achieved with less ground settlement. Diaphragm walls are crucial in areas where ground surface settlement must be controlled. They are highly adaptable and can be used in numerous construction scenarios including foundations retaining walls and pile foundations. Diaphragm walls can be constructed in various dimensional shapes making them a versatile and effective solution for a wide range of construction needs..

[Audio] The diaphragm wall is a versatile and effective solution for various construction applications. It can be used to control deformation/settlement of adjacent buildings and underground structures as well as serve as a deep foundation for machine shafts. The diaphragm wall is constructed using a convenient top-down method which allows for precise control over the deformation/settlement of the wall and the ability to make adjustments as needed..

[Audio] This technique involves creating a trench under the protection of a slurry trench or diaphragm wall. The trench is narrow and prepared under the protection of a slurry. The diaphragm wall is a panel of concrete that is concreted as a single unit. Additionally the cutting-off wall is an impervious curtain used to stop or reduce the seepage of water. Understanding the theory behind the Diaphragm Wall is essential for the successful completion of Civil Engineering projects..

[Audio] Diaphragm wall components are discussed in this slide. A shallow wall constructed from the ground level to regulate drilling fluid used in D’wall construction is referred to as a guide wall. A pipe used to ensure watertight joints between adjacent panels as false work during D’wall construction is referred to as a stop end tube. A tool operated from the rig to excavate soil or rock is referred to as a trenching tool. A suspension of definite properties filled in the trench during D’wall excavation is referred to as slurry. Soil or rock cuttings excavated from the trench during D’wall excavation are referred to as contaminated slurry..

[Audio] Discuss the key elements of logistic management in densely populated zones when implementing a Diaphragm Wall. Talk about the time cycle and how to minimize it for efficient and timely completion of the project. Discuss the importance of maintaining alignment of couplers used for reinforcement. This is crucial for the stability of the trench during grabbing operation and for maintaining the overall structure of the wall. Discuss the stability of the trench during grabbing operation which is an essential aspect of logistic management in densely populated zones. Ensure that the trench remains stable and secure during the grabbing operation to prevent any accidents or injuries. Maintaining verticality of the trench is another key element of logistic management in densely populated zones. Ensure that the trench is maintained at a consistent angle during the construction process to prevent any issues with the structure of the wall. Finally discuss cage lifting which is an important aspect of logistic management in densely populated zones. Lift cages used for reinforcement carefully to ensure that they are placed in the correct location and that the wall is built to the correct specifications..