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Friday, July 21, 2017

A position is vacant for principal roads/highways engineer

The Company: A leading engineering Services business a strong presence and excellent track record of rendering major transport corridors in dominant international cities, is inviting applications for the position of principal roads/rail engineer to direct and assist the business in rendering large and modern infrastructure work.

Job role: As a Senior / Principal designer, you have to work in tandem with the Infrastructure & Transport team as well as take responsibility for supervising engineering design, project delivery, detailed design and technical troubleshooting on a wide array of big Transport infrastructure assignments (road, tunnelling & rail).

Duties and responsibilities:
• Civil design of large scale and modern road, highways, rail and transport Infrastructure projects around Melbourne and Australia.
• "Senior Management" opportunity.
• Use of 12d / Inroads / BIM all for creating outstanding civil design for Highways, rail and drainage projects.
• Participate in design review meetings with primary stakeholders and make sure that project milestones are fulfilled as per quality, budgetary and safety standards.
• Contributing in a work friendly environment.
• Communicating with Stakeholders perfectly in a joint venture / alliance environment.
This position is ideal for senior Civil Engineer / Designer having more than 10 years of working experience in the infrastructure / consulting industry.

If you think that you are eligible for the post, send your curriculum vita to Alan Pratt at alan@designandbuild.com.au and give a call on 0421 116 107 to get more details about the job.

A position is vacant for principal roads/highways engineer


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Published By
Rajib Dey
www.constructioncost.co
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Thursday, July 20, 2017

How to determine grades of concrete following IS 456:2000 standard

This construction video tutorial explains the grades of concrete with adherence to IS 456:2000 as well as process for detecting the characteristics strength of concrete.

IS 456-2000 refers to an Indian standard code of practice for general structural use of plain and reinforced concrete.


Grade of concrete determines the compressive strength of concrete. To calculate grade of concrete, standard compression test is carried out on concrete cube of 150 mm. Grade of concrete is demonstrated with M10, M20, M30 etc. where M stands for Mix i.e. mix of constituents used for concrete. Numeric figure in M stands for characteristics compressive strength (fck) that is stated MPa (N/mm2).
Characteristics compressive strength means the strength of material under which not over 5% result is presumed to fall.
As for example if 20 samples of concrete cubes are casted and carried out compression tests for them in the laboratory to determine their compressive strength. Results for test are 27.3, 25.4, 26.9, 25.1, 23.8, 27.6……20 results. If these are organized in increasing order, here 23.8 is less than 25 and remaining are greater than 25 in MPa. So, it signifies that one result falls under 25 MPa and it is detected that only 5% of results fall under 25. Therefore, grade of concrete remains M25.
As per IS code, there are three comprehensive categories for concrete as follow :-
Type of concrete
Grade
High Strength Concrete
Over M 60
Standard Strength Concrete
M25 to M55
Normal Strength Concrete
M10 to M20


For online demonstration, watch the following video.




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Published By
Rajib Dey
www.constructioncost.co

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Wednesday, July 19, 2017

Guidelines for reinforced cement concrete design

This construction video provides detailed guidelines for designing reinforced cement concrete with adherence to the Indian National Building Code (IS 456 – 2000).
This code is designed for general structural application of plain and reinforced concrete. This code employs the limit state design approach along with working stress design approach. It provides wide-ranging information on the different characteristics of concrete.

It comprises of the following five sections and eight annexures:
• Section 1: General
• Section 2: Materials, Workmanship, Inspection and Testing
• Section 3: General Design Considerations
Section 4: Special Design Requirements for Structural Members and Systems
• Section 5: Structural Design (Limit State Method)
By going through this video, you will learn how to design various types of structural components like beam, column, slab, footing etc. as well as objective of structural designing.
The video briefly explains the following topics :-
1. Purpose of structural designing and designing method
2. Variation among plain concrete and reinforced concrete
3. Fundamental characteristics of concrete as follow
a. Grade of concrete
b. Characteristics strength of concrete
c. Modulus of elasticity of concrete
d. Creep and shrinkage
e. Longevity
f. Tensile strength
4. Fundamental properties and categories of reinforced steel
a. Grade and categories of steel
b. Yield strength of mild steel and HYSD Bars

Watch the following video for online demonstration.



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Published By
Rajib Dey
www.constructioncost.co

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Tuesday, July 18, 2017

Ring 3.0 – A powerful software for bridge analysis and masonry design

LimitState Ltd has developed RING, a powerful construction program for bridge analysis and masonry design.
The most updated version is RING 3.0. The newest version can be used for analyzing masonry arch bridges. The software is mostly suitable for structural engineers.
The software provides the following advantages :-
• Analyze single or multi-span bridges without having fixed upper limit on the permissible number of spans
• Automatically determine the critical failure mode although:
o only a single span is associated
o sliding is involved
modelling multi-ring arch bridges
• Determine and resolve numerous multiple load cases
• Automatically find out 'passive' pressures - analyze deep and multi-span arch issues with ease
• Model the presence of arch backing material
• User-friendly wizard system facilitate simple and rapid model definition
• Modern, uncomplicated interface supported with an collaborating modeling environment
Extensive library comprises of standard road and rail vehicles
• Property editor facilitates fast querying and adjustment of model properties
• 3D graphical output for superior perception
• Automatic report creation

• User-accountable arch and backfill profiles
• User-accountable separate block weights, masonry strength, mortar loss etc.

Ring 3.0 – A powerful software for bridge analysis and masonry design


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Published By
Rajib Dey
www.constructioncost.co
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Monday, July 17, 2017

What are the maximum bearing capacity of various types of soil

In this construction video tutorial, one will be familiar with how to determine maximum bearing capacity of various types of soil.
Safe Bearing Capacity of Soils is defined as the maximum strength of loading that the soil will bear securely devoid of the risk associated with shear failure.

The bearing capacity of soil refers to the maximum average contact pressure among the foundation and the soil which should not lead to shear failure in the soil.
In the jobsite you will be provided with drawings along with soil investigation report. From soil investigation report, you can get various information about the soil upon which the building will be constructed like number of fillings in the soil, the bearing capacity of soil, bearing pressure of soil to undergo.
There may be some errors in the report or higher value for bearing capacity.
In this video, you will learn how to find out maximum bearing capacity of soil and tally this figure with the soil test report to check for any discrepancy.
In the video, there are two heads like soil type and safe bearing capacity of soil. In soil type, there are different types of soil like combination of soft, wet and muddy clay, fine/loose or dry sand, soft clay, black cotton soil, moist or sand clay mix, loose gravels, compacted gravels, soft rock, sand or lime stone, hard rock/granite/trap etc. For each type of soil, the maximum safe bearing capacity is provided.

Go through the following video tutorial, to get more details.



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Published By
Rajib Dey
www.constructioncost.co

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Saturday, July 15, 2017

CSiBridge 2017 – The newest software for 3D bridge analysis

Computers and Structures, Inc. is the developer of CSiBridge. It is a very useful software for integrated 3d bridge analysis.

Modeling, analysis and design of bridge structures are incorporated into CSiBridge to transform the bridge design process to the next level.

The engineers can apply CSiBridge to easily determine complicated bridge geometries, boundary conditions and load cases. The bridge models are described parametrically with the jargons which are common to bridge engineers like layout lines, spans, bearings, abutments, bents, hinges and post-tensioning. The software has the capability to generate spine, shell or solid object models which are automatically updated with the modification in the bridge definition parameters.
With CSiBridge design, it becomes easier to design and retrofitting of steel and concrete bridges rapidly without any difficulty. By using the parametric modeler, the users get the ability to develop simple or complicated bridge models as well as create rectifications competently and at the same time total control on the design progression. Lanes and vehicles are described rapidly and comprise of width effects.
With the use of simple and practical Gantt charts, it is possible to simulate modeling of construction sequences and scheduling.
There is a simple wizard method in CSiBridge that offers the useful process to generate a bridge model.


CSiBridge is supported with the SAPFire® analysis engine along with staged construction, creep and shrinkage analysis, cable tensioning to target forces, camber and shape finding, geometric nonlinearity (P-delta and large displacements), material nonlinearity (superstructure, bearings, substructure and soil supports), buckling and static and dynamic analysis. All of these can be used with a single comprehensive model. Besides, AASHTO LRFD design is contained with automated load combinations, superstructure design and the newest seismic design.



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Published By
Rajib Dey
www.constructioncost.co

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Friday, July 14, 2017

How to estimate the quantity or number of dump trucks necessary for cut & filling of soil

This construction video tutorial provides detailed guidelines for computing the quantity or number of dump trucks essential for cut filling of soil.

Cutting and filling stands for the method of shifting soil from one place to another for leveling the ground properly.

A ‘cut’ is formed if the soil is cut from beyond the required ground height and a ‘fill’ is formed if the soil is employed to stuff a hole to preferred ground level. Cutting and filling is most recognized method that is applied to develop a uniform ground surface.
There is a risk associated with cutting and filling the land specifically when the desired land for filling is utilized for your house foundations. Each time earth is shifted the natural compaction is affected, and soil under this condition is frequently defined as ‘fluffed’ or ‘aerated’.
The soil should be compacted to resist settling so that it becomes safe for being used in foundation. If it's improperly compacted, settling soil can lead to cracked foundations.
Cutting and filling is usually done with earth moving equipment like skid-steer loaders or bulldozers. Based on the size and shape of your site, it is recommended to apply a drum roll style compactor or a plate compactor.


To get the complete calculation process, watch the following video.


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Published By
Rajib Dey
www.constructioncost.co

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Civil Engineering: Conventional and Objective Type – An exclusive e-book

Khurmi R.S. and Gupta J.K. have written an exclusive e-book known as Civil Engineering (conventional and objective type). The book is available in paperback version.
The book sheds light on different branches of civil engineering.
The book is ideal for the civil engineering students and for those who want to make good result in state or union civil services examinations taking civil engineering as an optional subject.
J K Gupta and R S Khurmi have put their teaching knowledge to publish this standard and objective type responsive book.
The book includes some crucial topics like mechanics, applied mechanics, hydraulics and fluids mechanics, strength of materials, hydraulic machines, soil mechanics and foundations, building material irrigation, concrete technology, building construction, public health engineering and engineering geology. The topics in the book are based on the course material for under-graduated courses as well as that for objective type multiple choice questions.
The book comprises of brief conventional theory of each subject. Every concept and theoretical topics are supported with nearly 200 objective type questions.

Besides, there are different types of practice tests and solved/unsolved questions which are very useful for civil engineering students. It can facilitate the readers to solve out any confusions and prepare themselves for SSC or other junior engineering examination.

Civil Engineering: Conventional and Objective Type – An exclusive e-book


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Published By
Rajib Dey
www.constructioncost.co
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Wednesday, July 12, 2017

Foundation3D – A powerful construction tool for footing analysis and design

Foundation3D is a powerful tool that can be used for analyzing and designing spread and combined footing. The design of soil or pile supported foundation can be completed without any difficulty.
This tool is best suited for for creating the design of foundations for industrial equipment like horizontal exchangers and vessels, vertical vessels or towers, pipe racks and other plant supports.

By creating foundation design automatically, Foundation3D can constantly fulfill or outdo your project schedule requirements. Foundation3D facilitates to considerably enhance your productivity at each phase of your project ranging from equipment-specific automated load calculations to generating design sketches.
MAIN FEATURES:
• International Design Codes: Compatible with various international concrete design codes to finish the global projects successfully.
• User Defined Parameters: There are various customizable design options like concrete cover, pile arrangement and lots others to facilitate fulfilling different types of project specifications.
• Load Generation: Computes different types of equipment loads along with wind loads instantly and precisely to save significant times for load calculation.
• Load Cases and Combinations: Produces load cases and combinations for equipment foundation design which are mostly utilized and reduce major design time
• Soil/Pile Supported Designs: Accomplishes both soil and pile supported foundation designs in an collaborative surrounding facilitating you to explore with various “what-if” scenarios for getting best solution
• Analysis/Design Modes: Provides supports to both analysis and design modes for successful execution of your grass-roots or revamp projects, minimizing the total cost of ownership
• Numerous Foundation Components Design: Accomplishes the design process of several elements concerning a foundation like pedestals and footing, saving you the cost of learning multiple software solutions
• Rebar Layouts: Produces the layouts of rebar in pedestals and footings with customization options
• Material Quantities: Creates the material quantities to produce perfect cost estimates to your customers each time, at each stage of the project
• Detailed Design Sketches: Creates a detailed design sketch along with foundation plan, elevation, and sections, facilitating you to sum up the finalized design efficiently

• 2D Drawings: Collaborates with most recognized CAD engines to deliver 2D construction drawings, allowing you to control your design-drawing environment and human resources competently
• 3D Models: Collaborates with robust modeling tools to produce 3D models of the completed foundation design, facilitating you to fulfill or outdo compressed, variable project schedule requirements
• Multiple Reporting Options: Produces various types of customizable reports for your internal or client requirements
• Import Wizard: Imports support geometry and reactions from any superstructure software solution to execute foundation design instantly, enhancing your productivity.

Foundation3D – A powerful construction tool for footing analysis and design


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Published By
Rajib Dey
www.constructioncost.co
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Monday, July 10, 2017

Cutting Length of Triangular Stirrups

It is an easy drawn way with formulas about calculating the cutting length of the Triangular Stirrups. Follow the link for the video.
To calculate the cutting length of Triangular Stirrups first a column need to be drawn. Then with a diagram of 8mm a triangle is drawn into the column. The length of the column is 600mm and the height is 500mm.
The main bar with the black dotted need to be found out. The center to centre of the triangle is dotted and the height and weight need to calculate. By applying the formulas and the drawn figure you can calculate it correctly.



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Published By
Rajib Dey
www.constructioncost.co

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Friday, July 7, 2017

Engineering Mathematics: YouTube Workbook – A good resource for civil engineering students

Engineering Mathematics: YouTube Workbook is an exclusive e-book for construction and engineering professionals. The book is written by Dr Chris Tisdell, a mathematician at UNSW, Sydney and a YouTube Partner in Education.
With the blend of free written exercises with free online video tutorials on the Author's YouTube channel, the book spreads out the free and open education among the engineering students all through the world. Each chapter within the workbook is associated with a video lesson on YouTube where the author briefly explains and resolves problems step-by-step.
The study materials in this book are available online and the students can obtain them at once and as per geographical location that fulfills their requirements.
Under this workbook, every chapter is segregated into learning modules (subsections), each contains its own standalone video tutorial.
One can watch the online video through the hyperlink situated at the top of the page of every learning module, with workbook and paper / tablet at the ready. Alternatively, once can click on the Engineering Mathematics YouTube Workbook playlist to get all the videos for the workbook in sequential order:
The subject material is developed on the basis of the author's lectures to engineering students at UNSW, Sydney. The readers can utilize this workbook as a revision tool and get the ability to resolve their own set of problems.
Two semesters of calculus is an indispensable requirement for anyone who wants to apply this workbook.
To download a free copy, click on the following link bookboon.com














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Published By
Rajib Dey
www.constructioncost.co
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Thursday, July 6, 2017

How to find out water absorption ratio in bricks

This construction video tutorial is made on the topic of water absorption test in brick.
The video starts with selecting some bricks out of a series of bricks and keep them aside. Mark them with the numbers 1,2 and 3. These bricks have to undergo a hot pack process by immersing them into a bucket filled with hot water at the room temperature of 280C. Pour more water to maintain the adequate level of the water. Keep this suturing method continued for 24 hours.
After the completion of 24 hours the bricks are taken out from the water tank one by one. After that, with the use of a cotton cloth, the bricks are wiped off and cleaned. Now take the weights of these bricks and denote them with W2 i.e. weight of the bricks in saturated conditions. The weight is taken through a digital weighing machine. All the values of weight are recorded in a paper.

Now the bricks are transferred to a hot air oven for water hydration test at 1050C and keep them for 24 hours.
After completion of 24 hours, turn of the power of the oven and take out the bricks and put them in a tray. Now, again take the weight of the bricks through the digital weighing machine and denote them with W1 i.e. weight of the brick in dry condition. All the values are recorded in a paper.
The weight of brick in dry condition (W1) in Kg is given as follow :-
Specimen 1 = 2.896, Specimen 2 = 2.945, Specimen 3 = 2.902

Weight of Brick in Saturated Condition (W2) in Kg is given as follow :-
Specimen 1 = 3.025, Specimen 2 = 2.987, Specimen 3 = 2.980

In order to find out the percentage of water, apply the following formula :-

W2 – W1/W1 x 100


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Published By
Rajib Dey
www.constructioncost.co

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Wednesday, July 5, 2017

How to examine brickwork in a wall

After completion of brickworks, it is required to examine the brickworks with the following four steps:
• Gauge - Examine the height of the course
• Level – Ensure that the perfect level is maintained for course 
• Plumb – Ensure that the wall is vertical
• Straight - Ensure the wall is straight

These examination works should be initiated while each course is placed and in this order to certify that the previous checks remain unaffected.
Gauge: While going to develop any wall, it's required to retain the courses at the corners at the equivalent height with the help of a gauge board.
Demarcate a piece of timber with marks similar to gaping of one brick height as well as the density of the bed joint (generally a total of 75cm).
Utilize the rod at the corner when each course starts and verify that it maintains the exact height, on uneven ground, begin by providing a datum peg next to the wall in order that the gauge rod is place smoothly.
Level: To maintain the exact level of the course, apply a spirit level. As the corner bricks are arranged to the proper height, so any modification is made by accomodating the bricks in from the corner. Bricks are not developed with very tight tolerances. Therefore, just level the portions of the bricks which connect the base of the spirit level.

Plumb: Verify that the wall face is vertical with the use of a spirit level, tap the brick over the wall as required to modify the brick as per requirement. It should not be done for both sides of the wall, select one side as 'the face' and just plumb that side. Perform it along the wall, placing the points roughly just under the length of the spirit level.
Examine both sides of corners.
Straight: Apply a straight edge among the points which are plumed earlier to straighten the course. Tap the bricks as required.
Similar to plumbing the wall, only examine the face of the wall without straightening both sides.
It is not possible that the straight edge will connect every brick over its whole face, attempt to have the centre of each brick to connect the straight edge and the two ends of the brick approximately positioned from it correspondingly.





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Published By
Rajib Dey
www.constructioncost.co
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Setting Process of Cement

The reaction of cement starts immediately when the water is mixed. In it’s pure and finely ground form, it is extremely sensitive to water. Out of the three main compounds of cement, i.e. C3A, C3S, C2S, reacts quickly with water. They produce a jelly-like mixture that starts solidifying. This changing action from fluid to solid is called ‘Setting’ (not ‘hardening’).

In the next stage of hydration, cement paste starts hardening itself to the reaction of C3S and C2S with water. After that it become more harden and dominant. Once initial stiffing has taken place, it should be hardened or gain strength as soon as possible so the risk of frost damage in frozen climate is minimized. The exact timing should always be followed.

“Initial setting time” is defined the period elapsing between the times when water is added to the cement and the required section fails to pierce the test block to a depth from the bottom of the mould.

“The final setting time” is defined as the period elapsing between the time when water is added to cement and the time at which the needle of certain section with required attachment makes an impressive on the test block.
The compressive strength test is based on two functions to fulfill. 1. Final check on the quality of the cement. 2. In case of any doubt, it also helps to classify the cements according to their strength.
The difference between setting and hardening cement is: cement is said to harden when the paste further reacts with water into action. Hardening is associated with the development of strength.


Setting Process of Cement


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Published By
Rajib Dey
www.constructioncost.co
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