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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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