The document provides details about a construction project involving Direct Mud Circulation (DMC) piling. The project involves constructing over 2,600 piles, including 500 piles using the DMC piling method, at the West Bengal HIDCO Convention Centre site in Kolkata. The DMC piling process involves boring holes using a chisel and jets of water, inserting reinforcement cages, and filling the holes with concrete via tremie pipes to form reinforced concrete piles. Key steps include setting up the piling rig, boring the holes to the required depths, adding and removing drilling rods, inserting cages, and pumping concrete from the bottom-up to avoid segregation.
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The intersection of railway track and the road at the same level is referred to as a level crossing. In the urban areas the level crossing is generally monitored by qualified railway personnel who monitor the train movement and close the level crossing gate to stop the interfering road traffic but such closing of gates leads to congestion in road traffic and also causes loss of time to road users. Road under bridge and road over the bridge are considered as solutions for avoiding level crossings of roads and railway track.
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The intersection of railway track and the road at the same level is referred to as a level crossing. In the urban areas the level crossing is generally monitored by qualified railway personnel who monitor the train movement and close the level crossing gate to stop the interfering road traffic but such closing of gates leads to congestion in road traffic and also causes loss of time to road users. Road under bridge and road over the bridge are considered as solutions for avoiding level crossings of roads and railway track.
Micro-piling is one of the efficient and cost effective ground improvement technique which can be use various condition. It can use to support foundation as well as soil retention.
Pile foundation are essential in case where SBC is low or the load coming from superstructure is too heavy,
Topics covered includes Materials used for making piles, Type of piles, load transfer mechanism, factors affecting selection of piles, Installation methods, load carrying capacity of piles, different load tests performed and the behavior of piles as a group.
In this presentation i have gone through about various prospects and challenges that have been faced at the time of installation,its types,method of installation &its application.
Summer Internship Presentation of Building Self-employed
This presentation includes various types of information which are precisely done at the time of internship. This includes Short detail of company, project, process, difficulties faced and some simple formulae to calculate the Quantity and estimation of materials used.
The vacuum dewatering process basically improves strength, durability, and other properties of concrete by reducing the water-cement ratio immediately after the mix is placed, usually in floors and other flatwork. A Bridgeport, Connecticut vacuum dewatering demonstration, although it involved no new ...
vacuum dewatering system
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- The Caissons is used for the purpose of placing a foundation in correct position under water.
- Three types of Caissons
1) Open Caisson
2) Box Caisson
3) Pneumatic Caisson
General presentation of under-reamed piles. Mainly for diploma engineers, it is really helpful as its objective, dimensions, usage, etc are shown with proper images. It will really helpful for the basic knowledge of under-reamed piles.
well foundation of six lane new ganga bridge near kacchi dargah in district P...Arman Hashmi
WELL FOUNDATION PPT, well foundation of six lane new ganga bridge near kacchi dargah in district Patna on NH-30 to near Bidupur in vishali district on NH-103 from bihar state road developement corporation limited
This is about types of shear failure in soil, describe all the three types of the bearing capacity failure of soil.
This is prepared by (Abdullah Kawkas Galaly) a student in civil engineering department at Salahaddin University in Erbil-Kurdistan region.
Micro-piling is one of the efficient and cost effective ground improvement technique which can be use various condition. It can use to support foundation as well as soil retention.
Pile foundation are essential in case where SBC is low or the load coming from superstructure is too heavy,
Topics covered includes Materials used for making piles, Type of piles, load transfer mechanism, factors affecting selection of piles, Installation methods, load carrying capacity of piles, different load tests performed and the behavior of piles as a group.
In this presentation i have gone through about various prospects and challenges that have been faced at the time of installation,its types,method of installation &its application.
Summer Internship Presentation of Building Self-employed
This presentation includes various types of information which are precisely done at the time of internship. This includes Short detail of company, project, process, difficulties faced and some simple formulae to calculate the Quantity and estimation of materials used.
The vacuum dewatering process basically improves strength, durability, and other properties of concrete by reducing the water-cement ratio immediately after the mix is placed, usually in floors and other flatwork. A Bridgeport, Connecticut vacuum dewatering demonstration, although it involved no new ...
vacuum dewatering system
vacuum dewatering pump
vacuum dewatering box
wellpoint pump systems
dewatering pump system
dewatering pump
dewatering wellpoint
small wellpoint dewatering systems
interesting civil engineering topics
civil engineering topics for presentation
civil seminar topics ppt
civil engineering seminar topics 2018
best seminar topics for civil engineering
seminar topics pdf
seminar topics for mechanical engineers
seminar topic for civil engineering pdf
- The Caissons is used for the purpose of placing a foundation in correct position under water.
- Three types of Caissons
1) Open Caisson
2) Box Caisson
3) Pneumatic Caisson
General presentation of under-reamed piles. Mainly for diploma engineers, it is really helpful as its objective, dimensions, usage, etc are shown with proper images. It will really helpful for the basic knowledge of under-reamed piles.
well foundation of six lane new ganga bridge near kacchi dargah in district P...Arman Hashmi
WELL FOUNDATION PPT, well foundation of six lane new ganga bridge near kacchi dargah in district Patna on NH-30 to near Bidupur in vishali district on NH-103 from bihar state road developement corporation limited
This is about types of shear failure in soil, describe all the three types of the bearing capacity failure of soil.
This is prepared by (Abdullah Kawkas Galaly) a student in civil engineering department at Salahaddin University in Erbil-Kurdistan region.
This presentation explores the basic dos and donts of presenting and guides us through a training on designing the 20-minute template, pushing presentation software beyond slides and getting the most out of Prezi.
*Prepared for the Boulder Technology Summit.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
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.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
TECHNICAL TRAINING MANUAL GENERAL FAMILIARIZATION COURSEDuvanRamosGarzon1
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The A318, A319, A320 and A321 are twin-engine subsonic medium range aircraft.
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Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
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Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
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It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
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1. : PROJECT SITE :
HIDCO CONVENTION CENTRE,
NARKELBAGAN, KOLKATA,
WEST BENGAL
PROJECT UNDERTAKEN BY:
LARSEN & TOUBRO LTD.
2. The complex at night from the entrance
Plan of the whole project (Schematic diagram)
3. DMC PILING
PREFACE:
The report is prepared after the training and observation done
at Project-site of WBHIDCO Convention Centre, being an engineer
trainee under Geotreat Ltd.
The project is undertaken by Larsen & Toubro Ltd. A part of
piling works is being conducted by Geotreat Ltd.
The start date of the construction project was 16.06.2014 & the
expected end date is 15.09.2016. Over 2,600 piles are to be
constructed among which 500 number of pilling is conducted by
Geotreat Ltd. All of them are done by DMC piling methods.
4. The whole project report is subdivided in the following
sections:
1.Introduction
2.Objectives and classification of piles and piling
methods
3. Principle of DMC piling
4.Apparatus used
5.Field procedure DMC piling
6.Conclusion
5. 1. INTRODUCTION
Piles are the columnar structure, the most common type of
deep foundation, that safely transfer loads from the super
structure to more competent subsurface strata by means of
friction, end bearing or a combination of both. Piles can be
broadly classified based on the following parameters.
1. Method of installation of piles – Driven (displacement) piles
or bored (replacement) piles.
2. Type of material used for piling – Concrete, steel, timber
piles etc.
Among these, concrete piles can be classified further as pre-
cast and cast in situ concrete piles. Though there are a variety
of piling options, the most common type of piles used for
majority of construction works in India are bored cast in situ
concrete piles.
6. 2. Objectives and classification of piles and
piling methods
Functions of piles:
The major uses of piles are:
1. To carry vertical compression load, eg. bearing piles,
friction pile. (FIG. 1)
2. To resist uplift pressure, eg. tension piles or uplift piles or
anchor piles. (FIG. 2)
3. To resist horizontal or inclined loads, eg. Batter piles.
(FIG. 3)
Setting up piles
Depending up on the setting up principle, piles can be of two
types, eg. Displacement type and Replacement type, each has its
own advantages and disadvantages. For displacement piling
7. method, piles are driven into the ground pushing the soil out of its
way. Displacement piling is good for contaminated sites where it
costs a lot to move the soil out.
Using the replacement piling method, muck is dug out and
replaced with the pile. Much bigger piles can be casted by
replacement method.
Direct Mud Circulation (DMC) piling method or simply DMC
Piling method is an example of replacement piling method. This
method is the principle subject of interest in this report.
The advantages of displacement piling are:-
Self testing as driven to refusal or "set"
No pile arising to dispose of
Little disturbance
Limited access
High production
The disadvantages of displacement piling are:-
Cannot penetrate obstructions
Cannot always penetrate desiccated clay
Vibration and noise may be an issue
The advantages of replacement piling are:-
Effectively vibration free
Installed into non cohesive and water bearing soils
High production
Restricted access
The main disadvantage of replacement piling is that:-
it produces excavated material which requires removal off site
3. Principle of DMC piling
DMC piling is a typical wash bored piling method, ie. the
piles are of REPLACEMENT type. For this type of piling method, the
8. sub soil must be of cohesive nature. The basic principle of DMC piling
lies in the fact that the soil layers becomes harder to penetrate with
depth, so to soften the hard soil layers deep below the ground level,
water jet streams are used and then a typical chisel cuts the
relatively softer soil. Bore holes of several depths (for example 10m,
15m, 20m, 25m, 30m, etc.) and diameter (for example 500mm
750mm, 1000mm etc.) are dug as per design requirements. It can be
understood quite clearly that the nearby soil can collapse. To prevent
the collapse some special safety measures are considered during the
operation which will be discussed in later sections.
After the bore hole is dug and the collapse of subsoil around
the hole is safely prohibited, a reinforcement cage is entered into the
borehole and concrete is filled from the bottom of the hole with the
help of pipes, typically designed for this operation, called the Tremie
pipes. Usually concrete is left 28 days to harden and gain full
strength, but sometimes using admixtures they are prepared within
21 days.
4. Apparatus used
I. DMC rig
THE TRIPOD SYSTEM
Main shear leg: it is the longer leg than the other two that
carries the load.
The length is 7.5m.
The length can be adjusted. With the help of 20mm dia pins
9. The side shear legs: there are two side shear legs, 6.3m long
and they mainly support the tripod system.
The side legs must be placed at least 1.5m away from the centre
of the piles.
BASE CHANNEL
These are standard I section, 2cm thick and there are grooving
in it that holds the shear legs onto the ground with the help of
base cannel pin.
SLIP OVER WHEEL
Diameter 450mm
Thickness 50mm
Operation The rope slips over this wheel
or Pulley
SLIP OVER WEEL HOLDER
Diameter = 500mm
10. S.O. WHEEL PIN
Diameter 65mm
Length 200mm
Operation This is very important pin,
because it holds the S.O.
Wheel with the tripod system
and the entire vertical loads
act on it.
PLUNGE
Inside Diameter = 50mm
SUSPENSION PLATE – this is called into action if somehow the
chisel is stuck in the borehole. Pulleys are attached here and
the chisel is pulled out.
Suspension Plate
MAIN SHEAR LEG PIN – 20mm dia.
11. II. Winch
Capacity 3 Ton (Other capacities can be of
1 Ton 2.5 Ton 5 Ton 7.5 Ton etc.)
Driven wheel diameter 900mm
III. Diesel engine
USED IN WINCH (RUSTON MAKE)
Number of cylinder 4 3
Diesel consumption 2.1 lit/hr 1.75 lit/hr
Mobil consumption
(fresh engine)
0.5 lit per 7 days 0.5 lit per 7 days
Mobil consumption
(older engine)
0.5 lit per 12 hours 0.5 lit per 12 hours
USED IN PUMP (KILOSKER MAKE)
Number of cylinder 2
Diesel consumption 1.25 lit/hr
Mobil consumption 250ml per 12 hours
IV. Bailer or Slush Pump
Length 2700mm
Inside Diameter 450mm
Weight 0.5 Ton
12. V. Guide casing
Length 2750mm
Inside Diameter 550mm
Thickness of casing 30mm
Thickness of collar 20mm
VI. Chisel or Chopper
Thickness of sheet 80mm
Inside Diameter 400mm
Length 2500mm
Number of nozzle 4
13. 7.DMC rod
Length (m) 2.7 3 3.25
Diameter (mm) 95 75 65
Thread length (mm) 120
Thread type Tapered
ID of tapered king end (mm) 80
ID of queen end (mm) 120
Tapered thread end of DMC rods
8.Rope
Diameter – 20mm
14. 9.Tremie pipe
ID 5 inch
OD 6 inch
Thickness of sheet 12mm
10. Vertical pump
Power source Electrically operated
Power 10 Hp
11. Bentonite tank and Bentonite slurry
The Bentonite tank stores the Bentonite water which is of avg.
Density of 1.04gm/cc. The minimum density is 1.03gm/cc and
maximum density is 1.05gm/cc
Vertical Pump in Bentonite tank
12. Wash vat
This is where the muck mix with water gets stored, the muck
gets precipitated and the water becomes reusable.
15. 13. Tremie fork
Used to insert the tremie pipes and taking out DMC rods.
5. Field procedure DMC piling
For executing DMC piling method which is approved as per IS
2911 under specifications of bored cast in situ piles. The
positioning of points where the piles are proposed to set up,
are checked by the surveyor.
DMC piling Rig set-up and initiation of boring using the Bailer
After the point for boring operation is set out by the surveyor
the tripod is paced such that each side legs are at least 1.5m
away from the point, keeping the centre of borehole exactly in
the centre.
The bailer is then attached with the rope and the boring
operation is initiated.
After bailer reaches its full length into the soil, the guide casing
is inserted into the hole for farther operations.
16. Insertion of the guide casing
To prevent the side collapse and caving in, a guide casing of
550mm dia and of 2750mm length is placed on the top of the
bore hole and hammered by the bailer to insert it into the soil.
This will be withdrawn after concreting is over.
Boring with Chisel
Once the guide casing is placed, the boring is started with
chisel.
The chisel has 4 nozzles from where water jet is forced on the
hard soil layer as the boring progresses.
Progression of boring and addition of DMC rods
DMC rods are added one after another as the depth increases.
The DMC head are attached on top of the DMC rods which has
the plunge which receives the water from delivery hose.
17. The whole system is pulled up by the rope and the D-Shackle
with the help of the winch system and then left to fall free, so
that the chisel at the bottom cuts the soil and the boring
progresses.
The loose soil produced by boring, mixes with water and comes
up and is stored in the wash vat, where the soil gets
precipitated and the water is again usable.
Taking out of the DMC rods and Chisel and
Insertion of the reinforcement cage
After the boring is complete up to the desired depth, the DMC
rods are removed one by one using the DMC fork and the chisel
is also removed.
Then the steel reinforcement cage is inserted and welded
where ever there are joints.
Concreting and finalization of the process
The tremie pipes are inserted one by one using the Tremie fork
and then the bore hole is washed with the Bentonite water and
the Muck is completely removed and the hole is filled with
bentonite slurry.
The Transit mixer arrives and the Hopper is attached on top of
the tremie pipe.
The TM puts concrete mix into the hopper and the valve opens.
The bore hole is gradually filled with concrete which is
18. compacted by gradual vibration of tremie pipes. This filling of
concrete from the bottom is done to avoid segregation of the
concrete mix.
As the concrete fills the hole from bottom, Bentonite slurry
escapes the hole. The tremie pipes are detached one by one
and thus the hole gets filled completely.
After the hole is fully filled, the concrete is left 28 days to gain
full strength. After 28 days the guide casing is removed and the
pile is ready.
Concreting
6. Conclusion
DMC piling is the most common piling methods used in India. For
moderate sized piles, that is 450mm to 1000mm diameter and 25m
to 30m depth piles; it is also most convenient and economic way of
piling. Larger piles that are of diameter up to 1500mm can also be
founded by this method, but those are not that convenient. Other
process like Reduced Mud Circulation (RMC) is also in use.