This presentation includes case studies about deep excavation in Egypt and outside Egypt, useful for civil students and specially soil students who is interested in deep excavation.
Soil nailing is a technique used to reinforce and strengthen existing ground
Soil nailing consists of installing closely spaced bars into a slope or excavation as construction proceeds from top down
The grouted nails increases shear strength of overall soil mass.
Soil nailing is a technique used to reinforce and strengthen existing ground.Soil nailing consists of installing closely spaced bars into a slope or excavation as construction proceeds from top down.It is an effective and economical method of constructing retaining wall for excavation support, support of hill cuts, bridge abutments and high ways.This process is effective in cohesive soil, broken rock, shale or fixed face conditions.
Soil nailing is a technique used to reinforce and strengthen existing ground
Soil nailing consists of installing closely spaced bars into a slope or excavation as construction proceeds from top down
The grouted nails increases shear strength of overall soil mass.
Soil nailing is a technique used to reinforce and strengthen existing ground.Soil nailing consists of installing closely spaced bars into a slope or excavation as construction proceeds from top down.It is an effective and economical method of constructing retaining wall for excavation support, support of hill cuts, bridge abutments and high ways.This process is effective in cohesive soil, broken rock, shale or fixed face conditions.
Soil Nails Reinforcement - Design nails soil stabilization --مسامير قضبان تسل...Dr.Youssef Hammida
تثبيت وتسليح - تربة الجدران - الساندة بالمسامير
تستخدم تقنية المسامير في تثبيت المنحدرات الترابية والجدران الاستنادية والأنفاق الى تدعيم حفريات التأسيس العميقة. وتتلخص الطريقة في غرز قضبان معدنية طويلة ذات المقطع الصغيرامام المنحدر المراد تدعيمه بحيث تخترق هذه القضبان كتلة التربة إلى مسافة ونباعدات محددة مثبتة في منطقة خارج مخروط الانهيار حيث يؤمن استقرار سطح التربة على وجه المنحدر بطبقة تغطية رقيقة من الحجر او الخرسانة المقذوفة مسلحة بشبكة معدمية إنشائية مهمتها حجز التربة بين المسامير ويثبت المسمار نفسه على طبقة البيتون المقذوف بصفيحة تثبيت معدنية مربعة الشكل
Soil nail wall - Soil nailing - soil nailing walls
Soil nailing is an earth retention technique using grouted tension-resisting steel elements (nails) that can be design for permanent or temporary support. The walls are generally constructed from the top down. Typically, 3 to 6 feet of soil is excavated from the top of the planned excavation. Near-horizontal holes are drilled into the exposed face at typically 3 to 6 foot centers. Tension-resisting steel bars are inserted into the holes and grouted. A drainage system is installed on the exposed face, followed by the application of reinforced shotcrete facing. Precast face
Soil Nailing is a technique to reinforce and strengthen ground adjacent to an excavation by installing closely spaced steel bars called “nails” ,as construction proceeds from top down
Shortcreting has proved to be the best method for construction of curved surfaces. Domes are now much easier to construct with the advent of shotcrete technology. Tunnel linings are also becoming easy with this technology. Not only are these but there a wide range of applications where this technology has been a leading one. This technical paper includes the concept of shotcrete and how it differs from conventional concrete. It also enumerates the different types of process involved in shotcreting i.e. dry mix process and wet mix process. Advantages of shotcrete and its applications in various fields like tunneling, canals, buildings etc. are specified in detail. This paper presents an overview of shotcreting technology along with its applications.
DEFINITION OF SHOTCRETE:-
Shotcrete is a mortar or high performance concrete conveyed through a hose and pneumatically projected at high velocity onto a backing surface. It is the force of this spraying action that leads to compaction of the concrete or mortar which then forms layers of concrete to the required thickness. Shotcreting has been an acceptable way of placing cementitious material in a variety of applications.
Usually patented polypropylene fibers are included in the shotcrete which increases the cohesive nature of the shotcrete through mechanically binding the cementitious materials together. This mechanism reduces the rebound waste that occurs through the shotcreting process and these fibers also resist plastic shrinkage and cracking through their ability to enhance the early stage tensile strength of concrete.
Shotcrete also gives better surface finishes and reduces surface tearing on non- linear sections. Cementitious material containing the poly propylene fibers resist cycles of freezing and thawing and also reduces the chances of water and chemical penetrations.
Soil Nails Reinforcement - Design nails soil stabilization --مسامير قضبان تسل...Dr.Youssef Hammida
تثبيت وتسليح - تربة الجدران - الساندة بالمسامير
تستخدم تقنية المسامير في تثبيت المنحدرات الترابية والجدران الاستنادية والأنفاق الى تدعيم حفريات التأسيس العميقة. وتتلخص الطريقة في غرز قضبان معدنية طويلة ذات المقطع الصغيرامام المنحدر المراد تدعيمه بحيث تخترق هذه القضبان كتلة التربة إلى مسافة ونباعدات محددة مثبتة في منطقة خارج مخروط الانهيار حيث يؤمن استقرار سطح التربة على وجه المنحدر بطبقة تغطية رقيقة من الحجر او الخرسانة المقذوفة مسلحة بشبكة معدمية إنشائية مهمتها حجز التربة بين المسامير ويثبت المسمار نفسه على طبقة البيتون المقذوف بصفيحة تثبيت معدنية مربعة الشكل
Soil nail wall - Soil nailing - soil nailing walls
Soil nailing is an earth retention technique using grouted tension-resisting steel elements (nails) that can be design for permanent or temporary support. The walls are generally constructed from the top down. Typically, 3 to 6 feet of soil is excavated from the top of the planned excavation. Near-horizontal holes are drilled into the exposed face at typically 3 to 6 foot centers. Tension-resisting steel bars are inserted into the holes and grouted. A drainage system is installed on the exposed face, followed by the application of reinforced shotcrete facing. Precast face
Soil Nailing is a technique to reinforce and strengthen ground adjacent to an excavation by installing closely spaced steel bars called “nails” ,as construction proceeds from top down
Shortcreting has proved to be the best method for construction of curved surfaces. Domes are now much easier to construct with the advent of shotcrete technology. Tunnel linings are also becoming easy with this technology. Not only are these but there a wide range of applications where this technology has been a leading one. This technical paper includes the concept of shotcrete and how it differs from conventional concrete. It also enumerates the different types of process involved in shotcreting i.e. dry mix process and wet mix process. Advantages of shotcrete and its applications in various fields like tunneling, canals, buildings etc. are specified in detail. This paper presents an overview of shotcreting technology along with its applications.
DEFINITION OF SHOTCRETE:-
Shotcrete is a mortar or high performance concrete conveyed through a hose and pneumatically projected at high velocity onto a backing surface. It is the force of this spraying action that leads to compaction of the concrete or mortar which then forms layers of concrete to the required thickness. Shotcreting has been an acceptable way of placing cementitious material in a variety of applications.
Usually patented polypropylene fibers are included in the shotcrete which increases the cohesive nature of the shotcrete through mechanically binding the cementitious materials together. This mechanism reduces the rebound waste that occurs through the shotcreting process and these fibers also resist plastic shrinkage and cracking through their ability to enhance the early stage tensile strength of concrete.
Shotcrete also gives better surface finishes and reduces surface tearing on non- linear sections. Cementitious material containing the poly propylene fibers resist cycles of freezing and thawing and also reduces the chances of water and chemical penetrations.
Design and construction of auger cast piles by Dr. Malek Smadi of GEOTILLDr. Malek Smadi
GEOTILL Engineering (www.geotill.com) is Industry leading provider of Specialty Deep Foundations (drilled shafts, augercast piles, driven piling), Ground Improvement (soil-cement columns, vibro stone columns, compaction grouting, etc.), and Earth Retention Systems (cantilever soldier pile retaining walls, secant pile shoring, slurry walls, tie backs, etc.) throughout the United States on Commercial, Industrial, Electrical Transmission, Heavy Highway, and Heavy Civil type construction projects. Value Engineering and Design-Build Turnkey Solutions for any type of soil, loading, or limited access condition. Geotill has six locations Indiana, Illinois, Michigan, Ohio, Kentucky and Missouri.
Soil Nailing technique( a brief study in the domain of Geotechnical Engineering)ABDULSATTAR294
In this ppt., the technique of soil nailing has been explained in detail.
It covers topics such as Introduction, historical background, method of placing, applications and advantages.
EXCAVATION FOR FOUNDATION - Methods & Temporary Earth Retaining StructuresShivananda Roy
Generally excavation means to loosen and take out materials leaving space above or below ground. Sometimes in civil engineering term earthwork is used which include back-filling with new or original materials to voids, spreading and leveling over an area.
Ground Engineering Issues with Alazhar Tunnel Egypt ICE Journal Paper Tehmas Saeed
based on ICE research article on Al Azhar Tunnel in Egypt,
Data extracted from Research Paper
Geo technical Issues
Ground Hazards
Hazard Matrix
Identification of Engineering Technique
Application to similar Problem in any present or future project.
A pile is basically a long cylinder of a strong material such as concrete that is pushed into the ground to act as a steady support for structures built on top of it. Pile foundations are used in the following situations: When there is a layer of weak soil at the surface.
special concrete and high performance concreteErankajKumar
GROUTING OF CONCRETE, advantage ofGrouting,Characteristics of Grouting, GUNTING OF
CONCRETE, Application of Guniting, Properties of Guniting, advantage and disadvantage of Guniting, UNDERWATER CONCRETING, Properties of underwater concrete, METHODS OF UNDERWATER CONCRETE, advantage and disadvantage of underwater concrete, HOT WEATHERING CONCRETE, precautions, COLD WEATHER CONCRETING, PUMPABLE CONCRETE, Requirements of Mix Design for Pumpable Concrete, Ready Mixed Concrete RMC, Types of Ready Mixed Concrete, advantage and disadvantage of ready mixed concrete, introduction in High performance concrete HPC, selection of materials, behaviour of fresh high performance concrete HPC , behaviour of Hardened High performance concrete HPC when to use High performance concrete HPC , application of HPC , Advantage of HPC , Limitations of HPC
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
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CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
1. Ahmed Bahaa El Din Aly 15P1012
Abdallah Shaheen Mohamed 15P1003
Seif Ahmed Mohamed 15P1022
Islam Mohamed El Sayed 15P1023
Nael Hesham Ahmed 15P6015
Mohamed Karam Sayad 15P5002
Ahmed Essam Ali 15P1051
Youssef Ehab Salah 15P1041
Dr. Amgad Talaat
Submitted by:
Submitted to:
5. Case Study
Grade earth.
Excavate to level -3m for Guide walls.
Construct Formworks of Guide walls.
Pour concrete of Guide walls.
Drill &Pour concrete of piles
Excavate to level -9m.
Insert Anchors.
Fix Waller beams.
Fix boxes of anchors.
Test anchors tensile strength.
Backfill & compact by sand outside Ret. Walls at level -9.6m.
Backfill & compact by sand outside Ret. Walls at level -6.4m.
Backfill & compact by sand outside Ret. Walls at level -3.2m.
6. Procedures
Making a slope 1:1
CFA piles (360 piles)
Technique of installing CFA piles
Piles drilling machine drills for piles holes
into guide walls.
Concrete is poured
Reinforcement of piles is inserted.
9. Cover the piles and metal sheets
with mortar.
10. Tie beams are used to connect the piles in
order to work together .
11. Anchors
Anchors are put every 3 Piles to connect between piles and
retaining walls and to prevent the overturning of the piles.
12. Advantages
Minimal levels of vibration
Lower noise levels generated by piling rig
Faster installation
More suitable for tension loads at stability elements
depending on ability to install cage prior to concrete drying
out.
Much higher load capacities on larger diameter piles
13. Dis Advantages
Longer piles required than driven (not driven to a
predetermined set).
Removal and disposal of spoil material generated from the
pile.
Drilling through large obstructions/boulders cannot be
undertaken.
A strict quality control and thorough supervision need to be
done during the pile installation.
19. Advantages
Shotcrete facing is less costly
Grouting only once is required, saving time and labor.
The technique is flexible, easily modified.
Less impact on nearby properties
Can be used for strengthening of either natural slope, natural or
manmade
Allow excellent working space in front of the excavation face,
Rapid and uses less construction materials
20. Disadvantages
Soil nails may not be appropriate, where strict deformation control
is needed.
Only a very experienced and specialized contractor can implement
this soil mail technique.
Can Penetrate sewer or communication Lines.
Not suitable for high level of underground water Lands.
24. Advantages
Can be installed through virtually all soil conditions, to any plan
geometry and to considerable depths.
Can be constructed ahead of time and independent of other site
activities.
Can be constructed in relatively low headroom and in areas of restricted
access walls can be quickly
formed several hundred feet deepth good control over geometry and
continuity.
25. Dis Advantages
They are relatively costly.
They are also unsuited to strong soils conditions where
penetration is slow and difficult due to the use of the slurry
trench method.
Need high trained Labors and Quality Control
41. Bracing in deep excavation
RPSG Office building at Alipore, Kolkata
It has 9.0m deep basement.
Pile foundation was suggested.
The project site was almost “T” shaped having
almost equal width in all three arms.
which has restricted the possibility of
island/open excavation.
42. Bracing in deep excavation
Presence of building at close vicinity of the
site also restricted the option of anchored
excavation
The permissible deflection at top of
retaining wall was limited to 25-40mm only.
Braced excavation has been proposed with
steel sheet pile and three level struts.
Vertical H post at
few locations has been used to reduce the
strut section.
