Saturday, February 21, 2015

Download Foundaiton Design and Construction Handbook by Tomlinson PDF Free

Protection of foundation structures against attack by soils and ground water
A site investigation in one form or another is always required for any engineering or building structure. The investigation may range in scope from a simple examination of the surface soils with or without a few shallow trial pits, to a detailed study of the soil and ground water conditions to a considerable depth below the surface by means of boreholes and in-situ and laboratory tests on the materials encountered. The extent of the work depends on the importance and foundation arrangement of the structure, the complexity of the soil conditions, and the information which may be available on the behavior of existing foundations on similar soils.


Title of the Book

Foundation Design and Construction

Author of the Book

MJ Tomlinson

Contents of the Book

Site Investigation and Soil Mechanics
The General principles of foundation design
Foundation Design in Relation to Ground Movement
Spread and Deep Shaft foundations
Buoyancy Rafts and Basements (Box Foundations)
Bridge Foundations
Piles Foundations
Piled Foundations Structural design and construction methods
Foundation construction
Cofferdams
Shoring and Underpinning

Download the Book

Download the Book Foundation Design and Construction free handbook by Tomlinson click the link below;

Download Foudation Design and Construction for free


Tuesday, February 17, 2015

Resident Engineers CIvil Engineers Required in NESPAK

National Engineering Services Pakistan (Pvt.) Limited (NESPAK), a leading International Engineering Consultancy requires the services of following categories of professionals (on contract basis):

Jobs in NESPAK

Post

CIVIL ENGINEERS/RESIDENT ENGINEERS:

Civil Engineering Graduates preferably M.Sc from a recognized university having atleast 5 years experience in Construction Supervision of water pipelines/mains, large diameter sewers, sewage pumping stations and water and wastewater treatment plants/water retaining structures. The candidates with good communication and managerial skills will be preferred.

Requirements of Job

Suitably qualified candidates from HEC recognized universities may apply alongwith N-R-01 Form (download), detailed CVs, attested copies of degrees, certificates, detailed marksheets, CNIC, photograph, PEC Registration (if applicable) and experience certificates to the Vice President Human Resources Division NESPAK House, 1-C, Block-N, Model Town Extension Lahore latest by March 02, 2015. Position applied for and total experience (if any) must be written in the application and highlighted on the upper right corner of the envelope as well.  Shortlisted Junior Economists having 1 year or less experience will have to go through NTS examination.  Incomplete applications will not be entertained. Only short listed candidates shall be called for interview. No TA/DA shall be admissible.

Click Here to apply

Thursday, February 12, 2015

Fresh Civil Engineer Trainees Required in PSO, Pakistan

Pakistan State Oil Ltd (PSO), a leading firm in Oil Market, Largest in Pakistan needs passionate, educated and able professionals.

PSO needs management trainees and Trainee engineers.



Qualification:

B.Sc. (Civil, Mechanical, Electrical) from HEC Recognized University

How to apply?

Click the below link to download application form


Submit the application before 25 February, 2015 through courier service.


Wednesday, February 11, 2015

Download Stair Cases Structural Analysis and Design by M.Y.H. Bangash T. Bangash free PDF

In recent years free-standing and geometric (Sprial, helical, elliptical and combinations) staircases have become quite popular. Many variations of these staircases exists. A number of researchers have come forward with different concepts in the field of analytical, numerical, design and of experimental assessments. The aim of this book is to cover all these methods and to present them with greater simplicity to a practicing engineer. The numerous examples which are given in the text will obviously deals with that task easier.


Stair Cases Structural Analysis and Design



Title of the Book

Stair Cases Structural Analysis and Design

Authors of the Book

M.Y.H. Bangash
T. Bangash

Contents of the Book

Specifications and Basic Data on Staircases
Structural analysis of staircases : Classical Methods
Structural Analysis of Staircases – Modern Methods
Staircases and their analysis a comparative study
Design analysis and structural detailing
Appendix 1 supporting analysis
Appendix 2 structural details for practicing engineer

Download the Book


Click the link below to download Stair Cases Structural Analysis and Design by M.Y.H. Bangash
T. Bangash

Download Stair Cases Structural Analysis and Design M.Y.H. Bangash T. Bangash


Monday, January 26, 2015

10+ Stunning Old Famous Structures Under Construction Pictures

1. Colosseum in Rome way back in 1846

2. Hoover dam during construction



3. Golden Gate Bridge During Construction



4. Subway Tunnel being Constructed in UK mid 18s



5. All Female Survey Team working In UK



6. Construction of Eiffle Tower


7. Construction of Aswan Dam around 1899 in Egypt


8. Statue of liberty under construction assembled in France before shiped to united states



9. Queensboro Bridge under construction 1907



10. Nelson Column Under construction in April 1844 UK


11. tower bridge under construction


12. Under construction Manhattan Bridge Washington



13. Under construction Manhattan Bridge Washington



Assistant Engineer (CIVIL) Required at UET, Lahore

University of Engineering and Technology, Lahore invites from Punjab domiciled Pakistanis applications for the following posts on Regular  / Contract basis at UET and its campuses.

Qualification Required:

B.Sc. Engg. (Civil) from a recognized University
Or
3 years Diploma of Associate Engineer (Civil) With 5 Year experience as sub engineer / Overseer



Pay Scale

BPS-17

Location

Lahore, Kala Shah Kaku
Naroval

Requirements

Registration with Pakistan Engineering Council as Professional engineering in case of Engineering disciplines
respectively, is mandatory.
Age Limit: 21 to 45 years

The Selection board will consider all applications received and when necessary interview such candidates

How to apply:



  • Visit the web-site: jobs.uet.edu.pk
  • Fill out the relevant field of online application
  • Upload Passport size scanned photograph 
  • Print the application duly completed in all respect and sign it.
  • Attach Bank draft / Postal order / challan amounting to Rs. 60/- (for BS-17), Rs. 85 (for BS-19), in favour of Treasurer of UET, Lahore and other required documents with the printout of application.
  • Submit the complete set of applications and said documents to Registrar on or before 31.01.2015


Sunday, January 25, 2015

Download Engineering Project Management by N.J. Smith Free PDF

Managing Projects is one of the oldest and most respected accomplishment of mindkind. One stands in awe of the achievements of the builders of the pyramids, the architects of ancient cities, the masons and craftsmen of great cathedrals and mosques, and of the might of labour behind the Great wall of China and other wonders of the world. Today’s projects also command attention. People were riverted at the sight of the Americans landing on the moon. As a new road or bridge is opened as a major building rises, a new computer system comes online, or as a spectacular entertainment unfolds, a new generation of observers is inspired.

Title of the Book

Engineering Project Management





Author


Nigel J. Smith
Professor of Construction Project Management
University of Leeds

Contents of the Book

1. Projects and Project management
2. Value Management
3. Project Appraisal and Risk
4. Value Management
5. Project Appraisal and Risk Management
6. Project Management and Quality
7. Environment Management
8. Project Finance
9. Cost Estimating in Contracts and Project
10. Project Stakeholders
11. Planning
12. Planning
13. Project Control using Earned Value Techniques
14. Contract Strategy and the Contractor Selection Process
15. Contract Policy and Documents
16. Project Organization Design/Structures
17. Design Management
18. Supply Chain Management
19. Team-Based Supply Chains and Partnering
20. Private Finance Initiative Public-Private Partnership
21. Aspects of Implementing Industrial Project
22. Project Management in Developing Countries
23. The Future for Engineering Management


Download the Book

Click the Download Link below to Download Engineering Project Management for free

Download Engineering Project Management


Preview the Book


Here is a live Preview of the Book for you;


Friday, January 23, 2015

Download Structural Steel drafting and Design free by David MacLaughlin Hector Estrada PDF

Structural Steel is a very important part of architecture. The primary purpose of Structural Steel Drafting and Design is to provide students at both the associate and bachelor’s degree levels with a fundamental and practical knowledge of how structural steel is used to construct support frames for modern commercial and industrial buildings. Special emphasis is placed on how structural drafters in both structural design and fabrication offices prepare the working drawings required to help transform the architect’s vision and the engineer’s design into reality.



Download Structural Steel drafting and Design free by David MacLaughlin  Hector Estrada PDF

Title of the Book

Structural Steel drafting and Design
Second Edition

Author of the Book 

David MacLaughlin
Hector Estrada

Contents of the Book


Chapter 1 Steel – an economical choice for commercial and industrial buildings
Chapter 2: the world of structural Steel
Chapter 3: The structural drafter at work
Chapter 4: Reading architectural drawings for steel-framed buildings
Chapter 5: An overview of Basic Structural Steel Design Calculations
Chapter 6: The preparation of Structural Steel Design Drawings and Details
Chapter 7: Structural Steel Sections and Details: Some Practical Examples
Chapter 8: An introduction to Structural Steel Shop Drawings
Chapter 9: Structural Connections
Chapter 10: Structural Steel Column Detailing
Chapter 11: Structural Steel Beam and Miscellaneous Steel Detailing
Chapter 12: Anchor Rod Details, Anchor Rod Plans, Steel Erection Plans, and the Field Bolt List
Chapter 13: Vertical and Horizontal Bracing

Download the Book

Download Structural Steel drafting and Design free by just clicking the below link: 


Monday, January 19, 2015

Download Bentley PowerSurvey V8i Free Full Cracked

Power Survey is a comprehensive survey data management solution. It provides surveying professionals with a complete set of survey-specific tools for both InRoads and GEOPAK. Built on MicroStation PowerDraft, the software directly processes the data from your field survey device and automatically displays the resulting graphics onscreen. You can then manipulate the data using PowerSurvey's editing, reduction, and adjustment tools.

Features of Bentley PowerSurvey V8i

Data Collector Support

 Power Survey communicates with all industry-leading data collectors. Connect your data collector directly to a personal computer, laptop, or tablet PC and use PowerSurvey to manage the survey data. PowerSurvey can also upload GEOPAK or InRoads data to the data collector for field stakeout procedures.
Download Bentley PowerSurvey V8i


Customizable Feature-Driven Processing


 PowerSurvey supports extensive feature databases that detail the representation of each survey shot or feature  including symbolization, labeling, DTM control, and more. The feature database is completely user-definable and ensures standardization from the field surveyor to designer. As you process data, the software draws points and features in accordance with the feature table specified. With this powerful capability, you can generate drawings onsite immediately after the survey has been collected  for in-field verification.

Survey Data Adjustments

Editing and adjusting your survey data is an intuitive process when you use PowerSurvey. The software employs industry-standard routines to quickly make geometry adjustments and finalize your data. PowerSurvey offers least squares, compass rule, and transit rule adjustments. You can visually inspect the adjusted data and complete the topographic drawing in both DGN and DWG formats. The data can then be shared with the members of the project team that are using either GEOPAK or InRoads.

Interactive Coordinate Geometry 

Bentley PowerSurvey includes integrated coordinate geometry (COGO) tools. This valuable toolset enables you to perform offset commands, intersections, traverse, and many other geometry commands. Additionally, you can leverage the data generated with other modules of the InRoads and GEOPAK families of products.

Download Bentley PowerSurvey V8i

Click the button below to download Bentley PowerSurvey V8i for free 

Keywords for this Post

Other people are searching for:
PowerSurvey, Bentley Surveying, Surveying Softwares, Civil Survey Softwares, Civil Engineering Softwares, Download Bentley PowerSurvey V8i, Bentley Survey Products

Saturday, January 17, 2015

Download Structural Dynamics theory and Computation PDF Free

The analysis and design of structures to resist the effect produced by time dependent forces or motions requires conceptual idealizations and simplifying assumptions through which the physical system is represented by an idealized system known as the analytical or mathematical model. These idealizations or simplifying assumptions may be classified in the following groups;
Material assumptions
Loading assumptions
Geometric assumptions

Structrual Dynamics Theory and Computation

Title of the Book

Structural Dynamics
Theory and Computation

Fifth Edition
Updated with SAP2000

Authors of the Book

Mario Paz
Speed Scientific School
University of Louisville
Louisille, KY
William Leigh
University of Central Florida
Orlando, FL.

Contents of the Book

Part 1 Structures Modeled as a Single-Degree-of-Freedom System
Part 2 Structures Modeled As Shear Buildings
Part III Framed Structures Modeled As Discrete Multi-Degree-of-Freedom Systems
Part IV Structures Modeled with distributed properties
Part V Special Topics: Fourier Analysis, Evaluation of Absolute Damping, Generalized coordinates
Part VI Random Vibration
Part VII EarthQuake Engineering

Download the Book



Thursday, January 15, 2015

Download Bridge Engineering Handbook Superstructure Design By Wai-Fah Chen and Lian Duan

Throughout the history of civilization bridges have been the icons of cities, regions, and countries. All bridges are useful for transportation, commerce, and war. Bridges are necessary for civilization to exist, and many bridges are beautiful.

A few have become the symbols of the best, noblest, and most beautiful that mankind has achieved. The secrets of the design and construction of the ancient bridges have been lost, but how could one not marvel at the magnificence, for example, of the Roman viaducts?

Hand Book of Bridge Engineering 


The second edition of the  Bridge Engineering Handbook expands and updates the previous   edition by including the new developments of the first decade of the twenty-first century.

Modern bridge  engineering has its roots in the nineteenth century, when wrought iron, steel, and reinforced  concrete began to compete with timber, stone, and brick bridges.

 By the beginning of World War II, the  transportation infrastructure of Europe and North America was essentially complete, and it served to sustain civilization as we know it. The iconic bridge symbols of modern cities were in place:

Golden Gate Bridge of San Francisco, Brooklyn Bridge, London Bridge, Eads Bridge of St. Louis, and the bridges of Paris, Lisbon, and the bridges on the Rhine and the Danube. 

Budapest, my birthplace, had seven beautiful bridges across the Danube. Bridge engineering had reached its golden age, and what more and better could be attained than that which was already achieved?

Title of the Book

Bridge Engineering Handbook
Second Edition
Super Structure
Design

Author of the Book

Wai-Fah Chen and Lian Duan

Contents of the Book


  • Precast – Pretensioned Concrete Girder Bridges
  • Cast-in-Place Posttensioned Prestressed Concrete Girder Bridges
  • Composite Steel I-Girder Bridges
  • Composite Steel Box Girder Bridges
  • Horizontally Curved Girder Bridges
  • Highway Truss Bridges
  • Arch Bridges
  • Suspension Bridges
  • Cable-Stayed Bridges
  • Extradosed Bridges
  • Stress Ribbon Pedestrian Bridges
  • Movable Bridges
  • Floating Bridges
  • Concrete Decks
  • Orthotropic Steel Decks
  • Approach Slabs
  • Expansion Joints
  • Railings

Download Handbook of Bridge Engineering


Download Handbook of Bridge Engineering by clicking the Link Below;

Sunday, January 11, 2015

15+ Amazing Architectural Designs of the World

By allowing free your creativity and passion, these architects were able to create wonderful architectural structures that inspire genuine admiration.

1. Building Infosys. Hinjewadi, Pune Province. India

The headquarters of Infosys in India, is a beautiful building of high technology. The whole structure looks like an aircraft and this illusion is created by the way: a structure ellipsoid with tilted about 10 degrees angle.



The building was the first occupant of the IT park calling Rajiv Gandhi Infotech Park. In this park, there are about 20 software companies like Mindtree, Tata Technologies, Tech Machindra and CISCO.
The Infosys building is definitely the best. It was built based on the designs of architect Hafeez Contractor an important and respected Indian architect known for his commitment to "green" designs. The building is a combination of steel, glass and aluminum.



2. Milwaukee Art Museum. Lake Michigan, Milwaukee. Wisconsin

The Milwaukee Art Museum is a spectacular building that is divided into 3 parts: the Centre for the memory of the war, and Cudahy Quadracci Pavilion gardens. It has over 30,000 square meters. Emulates vessels stroll by the lake and the building has in its design: mast, bow and a kind of candles.


It was designed by architect Santiago Calatrava, David Kahler and Eero Saarinen. The Quadracci Pavilion is the most impressive visually, built under the postmodern style according to the plans of Calatrava. The Windhover Hall structure is the main attraction, and has a glass roof 90 feet high. The new wing of the museum designed by Calatrava is a huge set of carbon fiber bows that adjust to modulate the entry of light and heat of the museum. The MAM is located on the water bridge in the great Lake Michigan.

3. Netherlands Institute for Sound and Vision. Hilversum, Netherlands

The overall effect of the building is fascinating: colorful and translucent glass panels, very cheerful, luxurious and opulent. The building was designed by Neutelings Riedijk Architects, and has 5 underground levels and as many on the ground. The underground levels contain files and materials while the top is where the media museum open to visitors is.





The glass panels on the facade is very characteristic of a collage of famous paintings and photos of Dutch films and television series.

4. Denver Art Museum. Denver, United States.

The building was started in early 1948, when the designer Burnham Hoyt designed what became known as the Schleier Gallery. Over the years, they have made numerous extensions as the museum needs more space to store your treasures. Two of the most famous annexations were Frederick C. Hamilton Building and the North Building.



The Frederic C. Hamilton was designer by architect Daniel Liebeskind, and design resembles the beautiful peaks of the Rocky Mountains and all types of typical geometric formations geology Denver. The entire building was coated titanium huge panels according to the architect: "reflect the sunshine of Colorado".



5. Federation Square. Melbourne, Australia

The Plaza de la Federation (Federation Square) is the second tourist attraction of the city after the Crown Casino. The process of construction of the plaza was great controversy even though today is one of the most admired structures in the world.


The building is constructed as deconstructionism, offering a sense of fragmentation and a minimalist aesthetic. The facades are covered by glass and slabs of sandstone, zinc and metal frames which conformed interesting geometric patterns. Project designers were members of Lab Architecture Studio with teacher Donald Bates and Peter Davidson to head with local firm Bates Smart.



6. La Tete au Carre. Nice. France

La Tete au carre is a very visual building, which is the main eca a library, located in the heart of Nice, France. It is the first sculpture inhabited world, and is constructed entirely of aluminum. The famous sculptor and painter Sacha Sosno with losarquitectos Yves Bayard and Francis Chapuis were the creators. The literal translation of Tete au Carre's "Thinking inside the box". Inside the head are 3 floors of the full library of digital and paper documents and books. The building is 26 meters high and is one of the most interesting buildings-sculpture modern world.







7. Biosphere Montreal. Montreal, Canada

Montreal Biosphere is a museum dedicated entirely to the environment. The designer of this particular structure was the architect Richard Buckminster Fuller. The structure is 61 meters high and the diameter of the sphere is 78 meters. The main frame is made of steel tubes and use around 1900 acrylic panels for facades. Today the area serves as a location for numerous interactive exhibitions for children and many other cultural and entertainment programs for all ages.





8. Building Peter B Lewis. Cleveland. USA

This building was designed by famed architect Frank Gehry and is now the headquarters of the Weatherhead School of Management. The building has curved lines and although it looks strange is a very important artwork in the city of Cleveland.


The structure was named after the President of Progressive Insurance, an insurance company donated $ 37 million to build. The total cost was 62 million and is almost 152,000 square meters.



The style and structure is clearly reminiscent of the Guggenheim Museum in Spain which was also built by the master of pop Frank Gehry architecture.

9. Bibliotheca Alexandrina. Elshtaby. Egypt.

The Bibliotheca Alexandrina is one of the most famous cultural centers of the world, located in the city of Elshtaby in Egypt. The building. The construction style meets contemporary eipcio, simulating shimmering under the sun disk. The library can accommodate 8 million books, the main reading room is huge (70,000 m2) and has 11 levels cascading harmoniously. In the outer walls can be seen calligraphic inscriptions on the granite wall and ceiling of the reading room is 32 feet high.


Architects and planners were professionals and Snøhetta Hamza Associates study. The library and cultural center received the Aga Khan Award for Architecture in 2004. It occupies the same place as the ancient library of Alexandria.





Registration Bibliotheca Alexandrina



10. House dome. Pensacola Beach. Florida. USA

This structure is a dome (or cupola) geodesic that besides being extremely comfortable, very strong and resistant to all weather conditions. From inside the guests have an ocean view, since being a spherical structure can have an original panoramic view. The architect who built it is Bob Bissett.





11. Parc Guell. Barcelona. Spain

This park is full of wonderful pieces of architecture of Antonio Gaudi. It is located in Barcelona and was built between 1900 and 1914. Some of the most remarkable pieces of this park include admission, which gives the feeling that one enters a castle. Just as the colorful dragon-shaped fountain.







12. Honeycomb. Jerusalem. Israel.

This residential building has broken all the rules of traditional architecture. It was built in 1970 based on the plans of architect Zvi Hecker for the National Ministry of Housing wanted a design that would break with the architectural patterns of the city.



Source: architectural designs / arkiplus.com

Saturday, January 10, 2015

'A Casa do Penedo, "the House of Stone," Fafe mountains, northern Portugal'

Constructed between four giant stones and linked with a concrete mix, the house is rumored to be inspired by the popular American Flintstones cartoon. Although quite unusual, the prehistoric-looking residence does feature some traditional components such as windows, a front door, and even a shingled roof. As you might expect, the house’s design attracts thousands of tourists each year.



Due to the recent interest generated by the house and its remote location, Casa do Penedo has been the subject of robbery attempts and vandalism in recent years. Now, the house is equipped with bullet-proof windows and a steel door. Inside, however, the home is said to be quite cozy, with stone furniture, stairs, and railings made of logs.

ACI Code Concrete Overlays for Pavement Rehabilitation Download PDF

Hydraulic cement concrete overlays are used as a rehabilitation technique for both existing concrete and asphalt pavements. Concrete overlays offer the potential for extended service life, increased structural capacity, reduced maintenance requirements, and lower life-cycle costs when compared with hot-mix asphalt overlay alternatives.


Concrete overlays have been used to rehabilitate existing concrete pavements since 1913 and to rehabilitate existing asphalt pavements since 1918 (Hutchinson 1982). Beginning around the mid-1960s, many highway agencies began to search for alternative means of rehabilitating existing pavements, and the use of concrete overlays increased significantly (McGhee 1994).

In the 1990s, there was an even higher increase in the use of concrete overlays, spurred by improvements in concrete paving technology. For example, the use of zero-clearance pavers, fast-track paving concepts, and high-early-strength concrete mixtures greatly increased the reliability of concrete overlays to serve as a  reliable rehabilitation alternative.

ACI Code
Concrete Overlays for Pavement Rehabilitation
ACI Committee 352
ACI 352.13R-06


Contents
Chapter 1 – Introduction
Chapter 2 – Concrete Overlay types and construction materials
Chapter 3 – Selection of Concrete Overlay Alternatives
Chapter 4 – Bonded Concrete Overlays
Chapter 5 – Unbonded Concrete Overlays
Chapter 6 – Conventional Whitetopping Overlays
Chapter 7 – Ultra –Thin and Thin whitetopping Overlays

Chapter 8 – References

Download ACI Code for free


Wednesday, January 7, 2015

Download Bentley Water CAD V8i for Free Cracked full

In most of civil engineering projects from Housing to hydraulic related projects hydrology is mostly involved in combination with fluid mechanics. Water distribution networks are of significance importance from satisfaction of end user point of view.

Bentley WaterCAD V8i SELECT Series 3

Features of WaterCAD



Design and modeling of water distribution have some long tedious empirical formulas like Hardy Cross Method and other such methods which solves the network diagrams of pipes and water distribution network.

This tedious and long term repetitive calculation can be avoided by using the computer as our helper. There are a lot of softwares available in the market that can do the water quality modeling solution for water distribution system for example EPA Net and Water CAD.

WaterCAD has a name and have got quality in it that can help you design and model the water distribution system upto optimum level without any problem.

Graphical User Interface

WaterCAD helps engineers to design and analyze complex pressurized piping systems. WaterCAD has a unique feature of graphical interface that it can be used as stand-Alone or can be used along with traditional and leading CAD software i.e. AUTOCAD.

Graphical User interface of WaterCAD 

Modeling and Simulation

With the help of WaterCAD you can build network model and perform steady-state analysis, you can perform extended period simulation, precise results can be developed using reports, fire flow analysis, water quality analysis, energy costs, pressure dependent demands, criticality and segmentation.
WaterCAD has special Engineering Libraries in which Transient Valve Curve Editor and Pump Curve editor
is a robust inbuilt tools.

WaterCAD has efficient Modeling capabilities that let you model and optimize a distribution system, perform steady-state / extended period simulation, global demand and roughness adjustements can be made, data can be checked and validated,

Download Bentley WaterCAD

In this post I am going to share with you the free download link with which you can freely and easily download Bentley WaterCAD V8i for free.


Disclaimer: We here at iamcivilengineer.com doesn't upload the softwares neither sell them. We are just sharing the download links already available over the internet to the students for study purpose. The software name and its logo is a trademark of the respective publisher. 

Sunday, January 4, 2015

Download ACI Building Code 318-05 free [PDF]

ACI 318-05 Building Code requirements for Structural Concrete and Commentary
This code I am sharing today defines and explains one by one all the provisions of the American Concrete Institute (ACI) Building Code i.e. ACI 318-08.

ACI Building Code 318-08


This code provides minimum requirements for design and construction of structural concrete elements of any structure erected under requirements of the legally adopted general building code of which this code forms a part. In areas without a legally adopted building code, this code defines minimum acceptable standards of design and construction practice. For structural concrete,  f c′  shall not be less than 2500 psi. No maximum value of f c′  shall apply unless restricted by a specific code provision.

Contents

Introduction
Chapter 1—General Requirements
Chapter 2—Notation And Definitions
Chapter 3—Materials
Chapter 4—Durability Requirements
Chapter 5—Concrete Quality, Mixing, And Placing
Chapter 6—Formwork, Embedded Pipes, And Construction Joints
Chapter 7—Details Of Reinforcement
Chapter 8—Analysis And Design—General Considerations
Chapter 9—Strength And Serviceability Requirements
Chapter 10—Flexure And Axial Loads
Chapter 11—Shear And Torsion
Chapter 12—Development And Splices Of Reinforcement
Chapter 13—Two-Way Slab Systems
Chapter 14—Walls
Chapter 15—Footings
Chapter 16—Precast Concrete
Chapter 17—Composite Concrete Flexural Members
Chapter 18—Prestressed Concrete
Chapter 19—Shells And Folded Plate Members
Chapter 20—Strength Evaluation Of Existing Structures
Chapter 21—Special Provisions For Seismic Design
Chapter 22—Structural Plain Concrete
Appendix A—Strut-And-Tie Models
Appendix B—Alternative Provisions For Reinforced And Prestressed
Appendix C—Alternative Load And Strength Reduction Factors
Appendix D—Anchoring To Concrete
Appendix E—Steel Reinforcement Information
Commentary References
Index

Download 

Click the link below to download ACI Building Code Commentary for free


Planning Engineer Contract manager required for a multinational firm

A Renowned Multinational construction company are looking for experienced individuals to fill the following vacant positions;

Job Titles;
Contract Manager – Chartered Accountant
Planning Engineer
Quantity surveyor
Documents Controller
Rotary Drill Machine Operator



8-10 years experience in Roads and Bridges

Primavera (for planning engr. Contract manager, qs)

FIDIC (for contract Manager)

Previous experience with multinational contractor firm is desirable


Interested candidates may apply by January 10, 2015 at cxbhr051@gmail.com, kindly mention the job title in subject line. Also mention the expected salary with a short cover letter. 

Site Engineer / Quantity Surveyor Required for DesignScape in Lahore, Islamabad

Site Engineer is required for DesignScape in Lahore and Islamabad
Qualification
Experience in External Works


Send CV with photograph to DesignScape to
2nd floor, Al-Hassan Plaza, 149-Ferozpur Road, near Jamia Ashrafia, Lahore
Tel: 042-37428380-81 & 37427642

Email: hrdesignscap@gmail.com

Saturday, January 3, 2015

Los Angeles Abrasion Resistance Test

Abrasion is known as process of scraping or wearing something away, technically speaking; abrasion in geology is the mechanical scraping of a rock surface by friction between rocks and moving particles during their transport by wind, waves, gravity, running water or erosion. The intensity of this erosion effect depends on the hardness, concentration, velocity and mass of the moving particles.

Los-Angeles Abrasion Resistance Test


What is abrasion, wear and tear?


Pavements in transportation engineering, either rigid or flexible have aggregates of specific sizes. These aggregates throughout their life are subjected abrasive effect of moving traffic vehicles. Whether it is sub-base, base or wearing course the aggregates are subjected to wear and tear. Aggregates transfer their loads from vehicles to ground through the interlock and toughness of their rigid surface.
The aggregates, thus, must be hard enough to resist crushing, degradation and disintegration from any associated activities. While fine aggregates are used among the coarser aggregates the load transferring mechanism is bit easy due to the cushioning effect of the fine aggregates, in case of gap or open graded Hot mix asphalt (HMA), where there are no such fines or some are missing, toughness of aggregates play a pivotal role in defining the life of a pavement.


Resistance to Abrasion?


Absence of abrasion resistance, hardness or toughness in aggregates would result in premature degradation, dust pollution early loss of skid resistance and many other problems as well.
Extent of Resistance to abrasion is measured in laboratory by a test called “Los Angeles Abrasion test” or L.A Test. Los Angeles abrasion test is an empirical test; meaning that it doesn’t have a numerical or analytical concept as its base. Though it relates and defines well with the toughness of the aggregates but generally do not show a good relationship with the field performance of the subject sample.

Background

Theory of Los Angeles abrasion test is to produce the abrasive action by use of standard steel balls which when mixed with aggregates and rotated in a drum for specific number of revolutions also causes impact on aggregates. The percentage wear of aggregates due to rubbing with steel balls is determined and is known as Los Angeles Abrasion value.


Summary

Based on grading of aggregates select the number of steel balls and respective sieve sizes are arranged and total of 5000g sample is prepared. The sample is placed in a steel rotating drum along with the steel spheres or “charge”. As the drum rotates the drum picks up the aggregates and steel spheres and then drops them on the opposite end. This rotating, crushing and impact generates the abrasive effect. After specific number of revolutions, aggregates are removed from the drum and sieved on No. 12 (1.70 mm) sieve. The aggregate that is retained on the sieve is weighed and the difference between the weight is reported as percentage and given as Los Angeles Abrasion value.

Procedure


1) The sample obtained is cleaned and dried in oven at 105 to 110 degree Celsius.
2) Select the grading of the aggregates such that it suits best with the grading to be used in construction as shown in the table;
3) Arrange the sieves as per grading and weight the material retained on specific sieves such that the total weight becomes 5000 g.
4) Select the charge or steel balls for the Los Angeles Abrasion test as per the grading.
5) Place the aggregates and the charge in to the steel drum.
6) Rotate the Los Angeles Abrasion testing machine at a speed of 30 to 33 revolutions per minute (rpm). The revolutions is also dependent on the grading of the aggregates, it is 500 for grading A, B, C and D while 1000 for E, F and g.
7) The machine after specific revolutions is stopped and material is discharged to a tray.
8) The material is then sieved from Sieve No. 12 or 1.70 mm.
9) The material that would retained on sieve No. 12 is weighed and noted.


Table 1 : Grading of Aggregates

Sieve size (square hole)
Weight of test sample in gm

Passing (mm)
Retained on (mm)
A
B
C
D
E
F
G
80
63
2500*
63
50
2500*
50
40
5000*
5000*
40
25
1250
5000*
5000*
25
20
1250
5000*
20
12.5
1250
2500
12.5
10
1250
2500
10
6.3
2500
6.3
4.75
2500
4.75
2.36
5000


Table 2 – Grading with no of charge and weight of sample in gm.
Grading
No of Steel balls
Weight of charge in gm
A
12
5000 ± 25
B
11
4584 ±25
C
8
3330 ± 20
D
6
2500 ± 15
E
12
5000 ± 25
F
12
5000 ± 25
G
12
5000 ± 25

Observations and calculations

Original test sample mass = M(original) = ____________ g
Final test sample mass = M(final)= ________________ g
Loss = ((Mo – Mf)/Mo) x 100
Los Angeles Abrasion value (L.A Value) = _______________ %