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In any construction project it is obligation of a contractor to establish a well equipped material testing laboratory. Quality Control Manager or Quality Control Inspector has a team along with Material Engineer from consultant end and one material engineer from the contractor's end. Both of these persons try to optimize the quality standards and thus safety and quality as well.

Handbook of Material testing


Every material that is being used right from aggregates to steel structures, plastic pipes, reinforced steel, bricks, concrete etc has to be tested to verify the standard and quality of that material. This particular field of project has zero tolerance what so ever from the quality point of view.

This book contains standards and specifications of all those tests and is a must to have book for civil engineers.

Title of the Book

Handbook of Material Testing

Author of the book

Shiv Kumar

Contents of the Book


1.  Tests on Cement
2. Tests on Aggregates
3.  Tests on Fresh Concrete
4. Tests on Hardened Concrete
5. Tests on soil
6. Tests on Blanket Material
7. Tests on Bitumen

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The purpose of this book is to familiarize civil engineering and construction technology students with
two of the most important materials of construction, Portland cement (PC) and Portland cement con-crete (PCC).

People frequently make the error of using these terms interchangeably. It is important to
keep in mind that PC is a powder, while PCC is initially a plastic material and for the remainder of
its life, a solid.

Engineered Concrete Mix Design and Test Methods


A valid analogy is to compare PC to flour and PCC to bread. The book aims to assist
students to gain an understanding of PC and PCC through the physical handling and testing of these
materials in the laboratory environment.

While the book was primarily written for use at the college
level, it may also serve as a practical guide for the graduate engineer and laboratory technician.

Title of the Book

Engineering Concrete
Mix Design and Test Methods

Author of the Book

IRVING KETT

Contents of the Book


Part 1 Introduction
Part 2 Tests for Aggregates, Portland Cement, and Mortar
Part 3 Tests for Portland Cement Concrete
Part 4 Appendices

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Concrete pavements have been used for highways, airports, streets, local roads, parking lots, industrial facilities, and other types of infrastructure. When properly designed and built out of durable materials, concrete pavements can provide many decades of service with little or no maintenance. 

Concrete generally has a higher initial cost than asphalt but lasts longer and has lower maintenance costs” (Hoel and Short 2006: 26).

Concrete Pavement Design, Construction and Performance


In some cases, however, design or construction errors or poorly selected materials have considerably reduced pavement life. It is therefore impor-tant for pavement engineers to understand materials selection, mixture proportioning, design and detailing, drainage, construction techniques, and pavement performance.

 It is also important to understand the theoretical framework underlying commonly used design procedures, and to know the limits of applicability of the procedures   

Title of the Book


Concrete Pavement Design, Construction and Performance

Author of the Book


Norbert Delatte

Contents


Chapter 1: Introduction
Chapter 2: Types of Concrete Pavements
Chapter 3: Performance
Chapter 4: Subgrades, subbases, and drainage
Chapter 5: Selection of concrete materials
Chapter 6: Mixture design and proportioning
Chapter 7: Design Fundamentals
Chapter 8: Highway Pavement design
Chapter 9: Light duty pavement design
Chapter 10: Airport pavement design
Chapter 11: Industrial Pavement Design
Chapter 12: Transitions, special details, and CRCP reinforcement
Chapter 13: Subgrade and subbase construction
Chapter 14: Paving
Chapter 15: Finishing, texturing, curing, and joint sawing and sealing
Chapter 16 Concrete pavement maintenance
Chapter 17 Rehabilitation
Chapter 18 Overlays and Inlays

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Lets us answer this question from scratch, the word wobble means unsteady jerking movement from one end to other or move unevenly while coefficient is a symbol or number that defines the relation between two or more variables.

While post tensioning we use strand wire that is being joined by twisting around one and other to make a tendon, this tendon is to be inserted within a profile pipe called sheathing or duct after the concrete will achieve a specified compressive strength.



Sometimes the jacking force is applied from one end or both ends. The duct or profile pipe is to be inserted as per the designed curvature and location. The strand wire or tendon can’t be completely set as per the designed curvature and profile due to field restrictions and faulty workmanship.


Due to these reasons the curvature is bit shifted from the designed curvature and thus causes some loss in tensioning force. When jacking force is applied at one end, it decreases as we moves to the farther end due to friction between the tendon and the profile pipe or duct, this friction losses is of two types,
1)      Curvature friction loss
2)      Wobble friction loss
Curvature friction loss is basically the loss in tensioning or jacking force due to design curvature while wobble friction or wobble coefficient is a function of unintended deviation due to faulty workmanship or field restrictions.
Wobble coefficient is usually denoted by K and is measured in units of per length. It is found by multiplying the jacking force at any distance from jacking end with the average of the intended angular deviation from the design profile.

Usually having value of 0.0088. 

Paragon Constructors (Pvt) Ltd., a renowned name in the construction industry of Pakistan has initiated “Career Opportunity – 2015” for fresh and young civil engineers.


Our main objective for hiring new engineers is to provide them with a  platform to enhance their careers by gaining quality construction experience.

Paragon offers a variety of opportunities to excel in the following departments after assessing and evaluating every individual on the basis of pure merit.

1.       Execution
2.       Piling and Anchoring
3.       Planning and Project Management
4.       Cost Engineering and Contracts
5.       Material Engineering
Kindly email us your updated resumes latest by 18th Dec 2014 only short listed candidates shall be called for an aptitude test and selection shall be made purely on merti basis.
Send you resume on traineejobs2015@paragon.com.pk


“Site is a battle field for civil engineers”, this sentence is once wisely said by a workman. We as civil engineers while working see many poor labors losing their lives. We face the conditions one can’t even dream of.

Working in the field brings a lot of unforeseeable circumstances and challenges, I am writing this article today to just share with you a trouble I have recently faced while working as a Project Engineer here at your site in Metro Bus Project.



We here were working on one of the flyover which have 12 piers having on average 9 piles underneath. We here are using Cast-in place friction piles and for concreting we were using the tremie method of concreting.
Mostly while working for piles in underwater level we use the tremie method.  For tremie method after boring with auger upto required dia and depth. We lower the tremie pipe having conical top at the upper end. After attaching suitable no. of tremie pipes with the help of threads at the end. We just lowers the schut of the transit mixture to pour concrete through the upper conical portion into tremie pipe and then into bore hole. The concrete through pressure and weight displaces the water at the top and with this procedure the concreting of pile is done.

For lowering the tremie pipe we use mechanical crane rather than hydraulic crane the reason being that we in the concreting requires to shake the tremie pipe after few and while so that tremie pipe can’t stuck in. While concreting we removes the tremie pipe one by one and requires only the top portion to be dipped in the top of the concrete.

Tomorrow we faced a problem in which the tremie pipe got stuck in and as it is very costly pipe we don’t want to loose our pile as well as our tremie.

Following are some of the procedures we adopted and must be adopted in order to get out of such trouble.
1) Make sure to give shake the tremie pipe after few and while.
2) If the tremie pipe got stuck with crane use the excavator of crawler mounted type it will help
3) Use few liters of retarder admixture to increase the setting time it will help as well.
4) You can also use the concrete pump negative suction method, while the pump runs inversely it will help to create suction within the tremie pipe  that will help the concrete to come up in the tremie pipe and thus loosen concrete a bit.
5) Above all make sure to use safety precautions on the spot.

Public Sector Engineering Organization is looking for competent, self-motivated and dynamic personnel as Trainees in the following disciplines.

Job Opportunities for Civil Engineers

Title of the Post

Trainee Civil Engineer

Qualification:

Civil Engineer

Experience

Fresh Graduate Engineers from a university recognized by Higher Education Comission with registered with Pakistan Engineering Council.

How to apply?

Send your Complete CV, Certified copies of testimonials and domicile with recent passport size photograph indicating position applied. Only shortlisted candidates shall be called for test/interview. Maximum age limit is 28 years. No TA/DA is admissible for test/interview. Application should be sent to Head (HRM) P.O. Box No. 97, Wah Cantt, District Rawalpindi, latest by 26th December, 2014 positively. 
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Surveying is said to be heart of civil engineering. Every single activity of construction starts from survey, whether you are construction pile foundation, you need a surveyor to locate and layout that pile according to the coordinates i.e. northing and easting along with chainage, reduced distance (RD) from a bench mark. similarly the steel reinforcement level has to be according to drawing and specification, again a surveyor has to check in there.

This book of surveying not only describes it but also guides you through step by step procedures to solve various problems in the field.




Title of the Book

Surveying 
Problem Solving with theory and objective type questions

Author of the Book

Dr A M Chandra

Contents of the book

Errors in measurements and their propagation
Distance measurement
Leveling
Theodolite and traverse surveying
Adjustment of survey observations
Triangulation and trilateration
Curve ranging
Areas and volumes
Point location and setting out

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Traditionally, hydraulic modeling has been a reliable decision making tool for planning and design projects, but its use has been increasingly expanding to operations - from engineering support of operations to being directly leveraged by operators.

Title of Event

Water Distribution Operations and Modeling - Bridging the Gap


Venue and Timing

Thursday, December 18, 2014
10:00 a.m. IST (New Delhi) | 12:30 p.m. SGT (Singapore)
3:30 p.m. AEDT (Melbourne)


Register for this 45-minute webinar presented by hydraulic modeling expert, Dr. Thomas Walski, followed by an interactive question-and-answer session to address your specific questions on the spot.

What you can learn about:

The wide applications of hydraulic modeling in water distribution operations
How to increase understanding of the water distribution network, from what happened in the past and what is happening now, to what will happen in the future in the network under various conditions
The limitations of SCADA systems and hydraulic models used independently by different utilities departments, and how their integration significantly increases the return on investment on both
And more.

Who should attend:

Utilities: engineers/hydraulic modelers, operators, and their management
Consulting firms: engineers and their management

REGISTER NOW

Attendees who complete our webinar survey will go into the draw to win a copy of our Advanced Water Distribution Modeling and Management book

Although hundreds of stilling basisns and energy-dissipating  devices have been designed in  conjunction  with  spillways,  outlet  works,  and  canal structures,  it  is  often  necessary  to  make  model studies  of  individual  structures  to  be  certain  that these will  operate  as anticipated.  The  reason for these repetitive  tests is that  a factor  of  uncertainty exists  regarding  the  overall  performance  characteristics  of  energy  dissipators. The many  laboratory  studies made on individual structures  over  a  period  of  years  have  been made by  different  personnel,  for  different  groups  of designers, each  structure  having  different  allow- able  design  limitations.  Since no  two  structures were  exactly  alike,  attempts  to  generalize  the assembled data  resulted  in  sketchy  and,  at  times, inconsistent  results  having  only  vague  connecting links.  Extensive  library  research  into  the  works of  others  revealed  the  fact  that  the  necessary correlation  facts are nonexistent.



Title of the Book

Hydraulic Design of Stilling Basins and Energy Dissipators

Contents of the Book

Section 1. General Investigation of the Hydraulic Jump on Horizontal Aprons (Basin 1)
Section 2. Stilling Basin for high Dam and earth Dam spillways and large canal Structures (Basin II)
Section 3: Short Stilling Basin for Canal Structures, Small Outlet Works, and Small Spillways (Basin III)
Section 4: Stilling Basin Design and Wave Suppressors for canal structures, outlet works and diversion Dams (Basin IV)
Section 5. _ Stilling Basin with sloping Apron (Basin V)
Section 6 – Stilling Basin for pipe or open channel outlets
Section 7- Slotted and solid Buckets for high, medium, and low dam spillways (Basin VII)
Section 8 – Hydraulic Design of Hollow-jet valve Stilling Basins (Basin VIII)
Section 9 – Baffled Apron for Canal or Spillway Drops (Basin IX)
Section 10 –Improved Tunnel Spillway Flip Buckets (Basin X)
Section 11 – Size of Riprap to be used downstream from stilling basins

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download the book

The construction of dams ranks with the earliest and most fundamental of civil engineering activities. All great civilizations have been identified with the construction of storage reservoirs appropriate to their needs, in the earliest instances to satisfy irrigation demands arising through the development and expansion of organized agriculture. Operating within constraints imposed by local circumstance, notably climate and terrain, the economic power of successive civilizations was related to proficiency in water engineering.



Prosperity, health and material progress became increasingly linked to the ability to store and direct water. In an international context, the proper and timely utilization of water resources remains one of the most vital contributions made to society by the civil engineer.

Dam construction represents a major investment in basic infrastructure within all nations. The annual completion rate for dams of all sizes continues at a very high level in many countries, e.g. China, Turkey and India, and to a lesser degree in some more heavily industrialized nations including the United States.


Name of the Book


Hydraulic Structures

Authors of the Book


P. Novak, A.I.B, Moffat, C. Nalluri and R. Narayanan

Contents of the Book

Dam Engineering
Elements of Dam Engineering
Embankment dam engineering
Concrete dam engineering
Dam outlet works
Energy dissipation
Gates and valves
Dam Safety: Instrumentation and Surveillance
Part 2 Other Hydraulic Structures
River Engineering
Diversion Works
Cross Drainage and drop structures
Inland Waterways
Hydroelectric power development
Pumping stations
Waves and offshore engineering
Coastal engineering
Models in hydraulic engineering


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Civil Engineering as a field and as a career is not as easy as it seems, Civil Engineers work in fields for countless hours, have to work in Sundays as well. But even then the tough life have many crazy things that can happen to make your lips smile a but. 

The post I am writing today is to take a break from the hectic routine and lets have some fun and some smiles on our face. These funny civil engineering pictures are taken from various internet sources, most you might have gone through them but lets celebrate and lets enjoy that we are happy civil engineers. 


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When you will work in field sun will make you darker



When you will work in the field as civil engineer you get stronger than Superman.


That is why we say surveying is a heart of civil engineer.

This show how busy we civil engineers are. 

This picture shows what actually civil engineers do :) 



Some mistakes Past Civil Engineers made

Difference between architects and civil engineers

Civil Engineer at his interview

Yeah cock making a survey.

This is how site engineers are different. 

First ever Camel employed as chief Surveyor 

If you are an engineering student you must already know this face :P 

If you havn't done this thing you actually havn't done surveying in your life. 

This is how Civil Engineering Changed my Life

If World doesn't have Civil Engineers.

Trust me i am a civil engineer

Best example of hurdle removing in surveing

Site Engineers requesting for leave from site. 


Happy Birthday Civil Engineers
And this is why roadwork takes months to complete

He is a civil engineer always single but never available.

How you live your life as a civil engineer

These are also civil engineers. 

When civil engineers fail

What actually civil engineers do

Marriage of a civil engineer

How civil engineer works at height.

Life without Civil Engineer

Civil Engineer in a hurry. 

When you are in trouble and You need to get to the target This is how it works 

The effects of natural aggregates on the properties of concrete

Concrete is defined as a workable mixture of a cementations material mostly cement mixed in suitable proportion with fine and coarser aggregate along with water.

Concrete depending upon reinforcement is of two types, plain cement concrete (P.C.C) and reinforced concrete (R.C.C).
Download Advanced Concrete Technology 

Concrete has specific advantages over other structural materials like timber and steel structures. The only draw back of concrete is its poor tensile strength that is compensated with steel bars used in the concrete.
This book of advance concrete technology, is a very comprehensive book for practicing engineers that deals with concrete, its pouring with pumps etc.

Title of the Book

Advance Concrete Technology
Constituent Materials

Authors of the Book

John Newman
Ban Seng Choo

Contents

Cements
Calcium Aluminate Cements
Cementitious Additions
Admixtures for concrete, mortar and grout
Geology, Aggregates and classification
Aggregate prospecting and processing
Lightweight aggregate manufacture


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Dampness is the cause, reason and initiator of many defects and diseases in all sorts of construction from roads and transport systems to building and housing facilities. It might be a headache for you in rainy season and it might not let you sleep easily because of the danger and consequences of its presence. This post will let you know how to treat if your walls or building is being effected by dampness as well as will give you remedial measure that will ensure safety of your structure from all such devastating defects.

Dampness in walls

Before applying any remedial measure to a damp wall there should be free escape for any water that has already entered in the wall.

Silica Solution is transparent and very effective in resisting dampness.

Internal Treatment of walls 

Internal treatment of affected walls would consist of removing the old plaster, applying a slurry coat of neat cement with a water proofing compound and then cement rendering with a dense mortar, of 1:2 with integral water proofer added.

Another internal treatment for damp walls is the application of an impervious coating of some material or a coating of bitumen or tar followed by blinding with sand and plastering.

Preventing Dampness in walls

The following methods are also used for preventing dampness in walls

a) Two parts by weight of coal tar and one part by weight of pitch are put in a vessel, heated and stirred, until the mixture is sufficiently liquid. It is then applied on walls, and is found to keep out dampness very wall.
b) Spray or paint the walls with a solution of sodium silicate, followed by a solution of calcium chloride, which forms an insoluble silicate.

If dampness is confined to one position near ground floor level above the D.P.C., it may be due to a hole or crack in D.P.C. through which moisture can pass into the wall alone.
Dampness below ground level may be due to lack of sub-soil drainage, absence of vertical D.P.C.

Repelling Materials

Water repelling compounds are mixed in cement to make it water repellant, Examples are;
a) Chemically active ….. sodium and potassium soaps
b) Chemically inactive ….. calcium soaps and resin oils

Environmental engineering is essential for development of facilities for protection of the environment and for the proper management of natural resources. The environmental engineer places special attention on the biological, chemical, and physical reactions in the air, land, and water environments and on improved technology for integrated management systems, including reuse, recycling, and recovery measures.


Importance of Environmental engineering can be readily comprehensible while looking at the changes we are observing here and there relating to climate change, global warming etc. these and some similar phenomenon are commonly being used these days.


This handbook of environmental engineering brings for you in detail the introduction as well as the guidelines for all the problems along with the techniques used to solve the issues and problems regarding our environment

Title of the Book

Standard Handbook of Environmental Engineering

Edition of the Book

Second Edition

Author of the Book

Robert A. Corbitt

Contents of the Book

Chapter 1 Environmental Engineering
Chapter 2 Environmental Legislation
Chapter 3 Air and Water Quality Standards
Chapter 4 Air Quality Control
Chapter 5 Water Supply
Chapter 6 Waste water Disposal
Chapter 7 Storm Water Management
Chapter 8 Solid Waste
Chapter 9 Hazardous Waste
Chapter 10 Environmental Assessment

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Quantity surveyor can be regarded as the initiator of any project, once the project is planned the most important initial step is to quantify the quantities and estimate the rates and prepare a BOQ which is called bill of quantities that contains the unit rates of various items along with the quantity of the material used in that project.

Quantity surveyor is needed in contractors as well as consulting firms that helps the client in preparation of the various bill of quantities.  Quantity surveyor is a very diversified field that needs experience and in-depth knowledge of various construction phases. Like a planning engineer quantity surveyor first has to quantify the project prior the project is not started.

This book can be regarded as a must to have book for a quantity surveyor as it contains a step by step procedures and calculation examples that is required for a successful quantity surveyors.
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Title of the Book

Quantity Surveyor’s Pocket Book

Author of the Book

By Duncan Cartlidge

Contents


1. The Quantity surveyor and the construction industry
2. Forecasting Costs and Value
3. Measurement and Quantification
4. Procurement
5. Pricing and Tendering
6. Contract Procedure, administration and organization
7. Final Account

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Reinforcement in the form of steel or synthetic strips called geo-strips are placed within an embankment, containing soil in various layers compacted mechanically; the granular material of embankment is linked by means of friction. The embankment becomes a self supporting structure, such a structure is called reinforced earth structure.

Earth Reinforced with Geo-strips and Reinforced Earth Panels



Concept

Construction of reinforced earth is a very simple process. The principle concept of reinforced earth is similar to that of a reinforced concrete that contains steel, aggregates and fines. In reinforcing earth process we reinforce the earth by means of steel or synthetic geo-strips.

Stresses that are generated within the embankment is transferred and resisted by these reinforcing strips. 
Concept of Reinforced Earth Works (REW)


History

Constructions using these techniques are known to have existed in the 5th and 4th millenniums B.C. Since early civilizations, man has attempted to use soil with other materials to enable it for being used for his necessities. Typical early use includes us of branches of tree etc. to support tracks over marshy areas and to build hutments. Structures are also built by insects and birds using mud and leaves.  These are all familiar sights even today. This kind of principle is also used in building parts of Great Wall of China and the Babylonian Ziggurats i.e. temples.
Great Wall of China

In the 19th Century Passel used tree branches to reinforce back fills in order to reduce the earth pressure and thereby economize the retaining walls. 

Textile material was perhaps first used in road construction in south Carolina in the early 1930s. The first use of a woven synthetic fabrics for erosion control was made in 1958 by Barrett.

Construction

Reinforced earth system consists of following items;

a) Facing or the skin of the embankment
b) Reinforcing geo-synthetic strips
c) Soil in lifts or layers

During the construction phase we first do a lean within the boundary of embankment upon which the reinforced earth panels or skin of the reinforcement is placed. In this boundary of panels we place the selected material containing fines and gravels in lifts or layers. Each lift is mechanically stabilized by using a roller. We in this case don’t use sheep foot roller or vibratory roller, we use simple steel drum roller to do the compaction as well as ensuring stability of the structure.

The skin or reinforced earth panels have a path or passage for geo-synthetic strips which is called connectors mostly they are in C shape so they are called C-Connectors.
A bridge Abutment



These strips after passing through C-Connector is jointed with a reinforced steel bars placed at center in a specified distance. With each lift the process repeats and as a result we get a well compacted reinforced earth embankment. Water sealant foam is applied between each panels to ensure it as a water tight structure.

Advantages

Following are some of few positivity in Reinforced Earth Works

Reinforced Earth Panels Facing
a) Easy Placement

Construction is repetitive and simple, panels, strips, granular fill and then compaction

b) Positive Connection

Galvanized reinforcing strips are connected to concrete panels with structural bolts

c)    Engineered Backfill

Alternating layer of reinforcing strips and backfill are applied and compacted.

d)   Structural Facing

TerraClass facing panels are easily handled by placement crew.

MKRdezign

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