December 2014
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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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Keywords for the Book

Others people are searching for;
Download Transportation Tests books, Field Lab tests, Lab tests for civil engineers, Civil Engineering Test methods, AASHTO tests, ASTM tests, Handbook, Civil Engineering Handbooks, Material engineering, Handbook of Materials, Material testing handbook

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 [email protected]


“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. 
\

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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