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Thursday, August 25, 2016

FreeCPM – A web based, easy to use online scheduling solution

FreeCPM is a web based, free, completely operative and strong CPM scheduling application toward the Construction Industry. This construction application can enhance construction schedule management process. FreeCPM facilitates several project members to access, interact, manage and create project schedules without any difficulty. The users can access FreeCPM through any device and transfer schedule information directly to the jobsite and at the same time transfer updated information directly from the jobsite, in real time.

FreeCPM can reduce project costs and enhance the ROI of any Construction Project

With FreeCPM, the construction team can remain on track by making updates automatically in real time.

To get more information on this newest scheduling application, visit www.freecpm.com


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Published By
Rajib Dey
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Wednesday, August 24, 2016

A position is vacant for Assistant Staff Project Manager - Construction Materials Testing

An award-winning consulting firm that provides geotechnical engineering, construction materials testing and environmental and facilities consulting services and has been ranked as one of the top 100 engineering and environmental firms by ENR, is seeking an assistant staff project manager for construction materials testing.

Duties and Responsibilities: 
Mainly perform with management of construction materials testing projects. The candidate has to take liabilities for testing of soils, foundations, reinforced and post-tensioned concrete, masonry, structural steel, fire proofing and asphalt pavement. Besides, there are other project management liabilities which range from application of technical support, day-to-day assessment of field reports, checking progression of project for performance and budgetary conditions, support with collection efforts, planning for proposals and invoicing, participating with project site meetings and providing support with the resolution to technical and administrative problems.

Functionalities:
• Analysis of soils, foundations, reinforced and post-tensioned concrete, masonry, structural steel, fireproofing and asphalt pavement.
• Laboratory tests.
• Day-to-day field reports.
• Project meeting and providing support in project resolutions.
• Scheduling, training and oversight of field technicians.
• Special inspections of structural components.
• Development of proposals.

Qualifications: 
• BSCE from an ABET recommended college/university required; knowledge with MS Geotechnical Engineering will be an added advantage.
• 0-2 years working experience with associated field.
• EIT certification desired. Possibility for acquiring a PE license is essential for career development.
• Outstanding oral and written communication skills.
• Interest in project management and the ability to work effectively in teams, with clients, peers and subordinates, as required.

Notes: Please specify your compensation expectations [$$/hour] while sending application for this post otherwise your application will be disqualified. This position is non-exempt under FSLA. This position is not eligible for visa sponsorship.


Assistant Staff Project Manager - Construction Materials Testing

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Published By
Rajib Dey
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Tuesday, August 23, 2016

Civil Engineering Notes is a useful construction app for Civil Engineers

Civil Engineering Notes is a useful construction app for Civil engineering communities. The app includes various topics related to civil engineering branch which are very useful for civil engineers to improve their knowledge.

The app provides good information for all types of competitive examinations. All the topics in this construction app are narrated in very simple terms. The app provides huge benefits to the newbie engineers as well as advanced civil engineers.

The app shed light on the following topics :-

Construction Technology; Engineering Materials; Construction Planning and Management; Surveying; Railway Engineering; Highway Engineering; Hydrology; Water Resources; Engineering Mechanics; Kinematics and Kinetics; Strength of Materials; Structural Analysis; Structural Steel Design; Design of Concrete and Masonry Structures; Cantilever and Counter fort type retaining walls; Fluid Mechanics; Dimensional Analysis and Similitude; Laminar Flow; Open channel flow; Boundary layer; Hydraulic Machines and Hydropower; Soil Type and structure; Compressibility and consolidation concept; Compaction of soil; Sewerage systems, etc.

There are various illustrations supported with diagrams so that the users can understand the app in a better manner. Besides, graphical demonstration, there are various mathematical formulas.

The app will facilitate the civil engineers to efficiently design, build and maintain the physical and naturally developed environment together with projects like bridges, roads, canals, dams and buildings.

The app can be downloaded from google play store play.google.com

construction app for Civil Engineers

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Published By
Rajib Dey
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Monday, August 22, 2016

Build a concrete slab footing of modern buildings

A concrete slab is a common structural element of modern buildings. Horizontal slabs of steel reinforced concrete, typically between 100 and 500 millimeters thick, are most often used to construct floors and ceilings, while thinner slabs are also used for exterior paving.

In many domestic and industrial buildings a thick concrete slab, supported on foundations or directly on the subsoil, is used to construct the ground floor of a building. In high rise buildings and skyscrapers, thinner, pre-cast concrete slabs are slung between the steel frames to form the floors and ceilings on each level.


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Published By
Rajib Dey
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Saturday, August 20, 2016

Some useful construction tips for quality control of concrete throughout construction

This article is extracted from an exclusive construction article written by KAUSHAL KISHORE, well know consulting material engineer, and RAKESH SHARMA, Vice President Project of M/s Supertech Limited.

If the concrete is contacted with superplasticizer, it behaves the same way when the amount and type of sulfate included with the clinker. The rheological and setting Behavior are modified on the basis of whether the sulfate is included as anhydrite, hemihydrates, or gypsum. The variations are described by the various rates of dissolution of these sulfates.

It is crucial to keep in mind that all admixtures relevant to the similar generic type may not behave in the same way in concrete due to the differences in the molecular weight, cautions involved with them, chain length, etc. Correspondingly, the similar type of cement generically is dissimilar in mineral, alkali and sulfate contents, and fineness.

As per IS: 456-2000, admixture should not weaken strength of concrete neither mix with the component to develop injurious compounds as well as not enhance the chance for the growth of corrosion in reinforcement. The feasibility, compressive strength and the slump loss of concrete with or without the application of admixtures should be determined throughout the trial mixes prior to applying admixtures. If two or additional admixtures are applied all together in the similar concrete mix, data should be captured to evaluate their interaction as well as certify their compatibility.

The admixtures, the materials for forming concrete and their compatibility can influence the performance of concrete admixture along with superplasticizers. It is essential to analyze concrete admixtures so that it can be exactly used with the concrete to transform materials and mix proportions for being used on the work under proper field conditions.

There four primary components in Cement which range C3s, C2s, C3A and C4AF. Besides, there lots of negligible oxides like K2O and Na2O, MgO and SO3. These are supplied by gypsum and included in the final phases of cement manufacture as a set regulator. If there exist less C3A, superplasticizer would be get immersed in higher amount on C3S and C2S, causing a drop in the strength development.

To read the complete article, go through the following ink

Quality Control Of Concrete

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Published By
Rajib Dey
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Friday, August 19, 2016

Brief overview of Reinforced Concrete Materials

Concrete is a artificial product formed by solidifying the mixture of cement, sand, gravel and water in prearranged ratios. Once these compounds are blended, a plastic mass is developed that can be poured in appropriate moulds known as forms and placed standing into rigid solid mass. The chemical reaction of cement and water, in the alloy, is comparatively sluggish and needs sufficient time and perfect temperature for it completion. This time is also called ‘setting time’ and it is segregated into three separate stages. The first stage is labeled as time of initial set that tooks 30 to 60 minutes to be completed. Throughout this stage, the mixed concrete reduces its plasticity and forms apparent resistance to flow. The second stage is called final set and it takes 5 to 6 hours once the mixing process is completed. Throughout this stage, concrete becomes comparatively soft solid devoid of surface rigidity. The third stage contains progressive hardening and the strength is increased significantly. The method is very fast in the primary phase, till around one month once the mixing is completed. In this period, the concrete achieves the maximum capacity for hardness and strength.

Based on the quality and ratios of the compounds utilized in the mix, the properties of concrete differ. Concrete contains sufficient strength in compression but fewer strength in tension. Because of this, concrete becomes feeble in bending, shear and torsion. Therefore, application of plain concrete is restricted where strong compressive strength and weight are mostly required as well as tensile stresses are either completely missing or considerably low. So, in order to apply cement concrete for general structures like beams, slabs, retaining structures etc. steel bars are arranged at tensile zones of the structure which are concreted later on. The steel bars also called steel reinforcement, is implanted in the concrete and acquire the tensile stresses. The produced concrete is called as reinforced cement concrete generally shortened as RCC.

Brief overview of Reinforced Concrete Materials

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Published By
Rajib Dey
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Thursday, August 18, 2016

What is Segregation of Concrete?

Segregation of concrete means parting of components of concrete from each other. A superior quality concrete contains various aggregates which are uniformly coated with sand and cement paste and develops a uniform mass. While dealing, transporting and arranging concrete, the cement and sands are parted from coarse aggregate because of jolts and vibrations. If concrete is separated throughout transportation, it must be remixed correctly prior to deposit. It is recommended not to use a concrete if initial setting time of it is ended.

Segregation of Concrete occurs due to following reasons:

1) Applying high water-cement ratio in concrete. This may occur if the concrete is blended at      jobsite by inexperienced workers.

2) Too much vibration of concrete with mechanical needle vibrators result in placing heavier      particles at bottom and lighter cement sand paste arrives on top.

3) If concreting is performed from height for underground foundations and rafts, it may              cause concrete to separate

How to get rid of Segregation of Concrete:

When depth of concreting is over 1.5 meters, it should be arranged through temporary inclined chutes. The angle of inclination should be maintained between 1:3 and 1:2 in oder that concrete from top of chutes moves easily to bottom. Applying small amount of free water from top at intermissions allows in lubricating the path of flow of concrete to bottom easily. The delivery end of chute must be closer to the point of deposit.

Segregation in deep foundations and rafts of thickness over 1 meter may cause segregation of concrete near bottom or in center. In this case, proper observation should be taken. To identify this type of segregation, ultrasonic testing process can be used. To clear any confusion, random ultrasonic testing method is applied. This type of segregation is corrected by pressure grouting with special chemical compounds. If any fault is corrected by pressure grouting, core test is done to make sure that the strength of concrete is achieved with optimal level.

Segregation of concrete

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Published By
Rajib Dey
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