What is Self-Compacting Concrete and How is it used

Self-compacting Concrete, or Self-Consolidating Concrete, generally called SCC, is a fresh concrete that runs under its own weight and does not want external oscillation to undergo compaction. Constructors use SCC in the building structures where it is troublesome to use vibrators for the consolidation of concrete.

Why is Compaction Needed?

After the liquid or paste concrete is poured in place and should be left to set, it should undergo the compaction process before it starts to harden. Compaction or Consolidation significantly enhances the final strength of concrete and improves bonding with reinforcement. It also increases the abrasion resistance and overall sturdiness of the concrete. Moreover, this process decreases the permeability of concrete and helps to minimize its shrinkage and creep characteristics.

What is SCC?

The SCC or Self-compacting concrete is a form of concrete that can flow under its weight, and that does not need to go through a separate compaction process to fill and flow through heavy reinforcement areas.

SCC has more or less equivalent cement binders and water ratios as the standard concrete mix. However, the variations in the mix cause the SCC to produce a higher strength without vibrating the concrete by forming better bonds between the hardened paste and the aggregates and reinforcements. You can pour SCC into structures more than five meters tall because due to its characteristics the aggregates will not get segregated. The self-compacting concrete can also be poured faster than the regular mix.

What are the Materials in SCC Mix?

To give the concrete paste diverse properties, somewhat different materials ratios are used in the SCC mix. These are as follows.

Cement: Grade 43 cement is used in self-compacting concrete, which must meet the physical properties according to IS:8112 code. The following table will give a better understanding of the cement used in SCC

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Published By
Rajib Dey
www.constructioncost.co
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Types and Uses of Bulldozers in Construction

Most construction projects need moving of a large amount of earth, soil, sand, rubble, and debris all the time, especially at the beginning of the project. For this purpose, bulldozers come in very handy in land-based construction projects. Today we will see what these powerful machines are and how they are used in the construction industry.

The phrase "bulldozer" comes from an amalgamation of the words 'bull' and 'dose'. The first word implies power, while the latter indicates a will to force something to happen. The first proper bulldozer in history was produced in 1923 by farmer James Cummings and draftsman J. E. Mcleod. But this was used for farming purposes only. Bulldozers saw construction uses by the 1940’s.

What are Bulldozers?

Bulldozers, or dozers, in short, are essentially tractors with a large blade mounted in front of them. The tractor helps push the blade around the ground. Perpendicular to the ground, the blade is a thick plate of metal, wider than the tractor behind it and sometimes even half as tall. Sometimes the dozers come equipped with a claw-like device attached in the rear called a ripper to loosen up the ground before pushing it around.

Mobility

The vehicles are generally mounted on tracks, which gives them excellent ground traction and mobility on rough unstable terrain. Some versions of bulldozers come with extra-wide "swamp tracks" to handle soft ground. Though in uneven terrain, the use of wheeled bulldozers is common too. These dozers are mounted on four articulated hydraulics-operated large rubber wheels, which gives the vehicle the ability to work on uneven terrain and also much better speed than the tracked versions.

The engines of bulldozers need to be very high-powered since they need to create a huge amount of energy to push heavy objects. Also, the same engine needs to power the often-used hydraulics system. Depending on tasks the engines of dozers can vary from 70 to 1000 horsepower.

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Published By
Rajib Dey
www.constructioncost.co
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Best Calculators Construction Engineers are Using

The construction industry is near the top of the most math-heavy fields of work. Each project starts guzzling out numerical data right from the very beginning of the process. All that information needs to be calculated using the proper tools to produce the desired result.

Chances are, you have been using some basic calculator to help in this work. A standard engineering calculator can be found in most civil engineers’ bags. Worse, we see that in modern days people are using the calculators in their mobiles in this task. However, if you are a construction manager worth your salt, you would know that these generalized tools are pathetic when it comes to handling complicated building-related data. Wouldn’t you wish there were calculators custom-built for construction jobs?

Fortunately, there are. Today, we will look into a few gadgets built specifically to handle the computational needs in a construction project. These calculators support custom functions, fractional computing, unit conversion, and a lot of other stuff specifically needed for building construction managers and civil engineers. Some of these are portable devices and some again are mobile apps. The 5 most popular construction calculators are:

1. Construction Master Pro
2. Construction Calculator-Building Material Estimate
3. Jobber 6
4. C-Calc Pro
5. Materials Estimating Calculator

Construction Master Pro: The flagship of Calculated Industries general construction calculation tools line, Construction Master Pro looks like any standard scientific calculator in a nice solid shockproof casing at first glance. Look closer, however, and you will see a myriad of custom functions and tools ornamenting the keypad.

Covering a wide range of constructional computation activities, this device can calculate details of building to framing to concrete work. Not only measurements, but you can also use this device to calculate how much material you need for building a given structure, the volume in excavations as well as fillings, and even go as far as counting the number of transports and their costs for your project.

The Construction Master Pro covers unit conversion needs as well, and unlike a scientific converter it will not needlessly bog you down into unnecessary unit lists. It can convert to and from all building standard units like foot, meter, inch, centimetre and so on. Another advantage this device offers is the conversion of not only lengths but also areas and volumes.

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Published By
Rajib Dey
www.constructioncost.co
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Types of Cranes Used in the Construction Industry

From as far back as the Mesopotamian civilization, cranes have been used for lifting objects that are too heavy or too repetitive to be done manually. Since this type of work is very much used in the construction industry, the use of cranes in it has been invaluable and indispensable since the ancient era. From the ancient Shadouf to roman Polyspastos to modern mobile telescopic cranes, they were used pretty much everywhere on earth.

What is a Crane?

A crane is a machine, comprised of beams, cables, and pullies, which is used to lift or lower heavy objects. An appropriately equipped crane may also move objects horizontally as well as vertically. The mechanism can be supported by a tower or a derrick.

Most cranes used in construction are temporary structures or even mounted on mobile platforms so that they can be moved around the construction site as necessary. They can be taken away when construction finishes in order to leave the site for normal usage. In some cases, where the building in question requires constant maintenance, the engineers may choose to rig a permanent crane with the building.

Modern cranes are powered by means of hydraulics that are driven by an electric motor or a combustion engine driven by fossil fuel. Operating (and driving, in case of mobile cranes) the crane is possible from an operators cabin that may be mounted on crane vehicle or rig itself, or a control station beside the crane, or by means of portable radio-operated controllers that gives the crane operator the freedom to move around and see the loading and unloading operation from any reasonable point of view. Taking that flexibility to a newer level, there are some modern cranes available that can even be controlled via mobile phone apps.

Types of Cranes in Building

Depending upon their usage, flexibility, and mobility, there can be several types of cranes to choose from to use in a construction site. The varieties of choices enable the constructor to adapt to any load-lifting requirements on site. Let us see what they are.

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Published By
Rajib Dey
www.constructioncost.co
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November 2019 Brings Eight Top Construction Projects in US

This winter is snowing new building projects all over the US of A. From small houses and shops to major residential, offices, and retail we are seeing a lot of developments starting in the last couple of months. Especially, the last month, November 2019, has seen the start of a few major and important building projects.

We will highlight eight of the most important such projects today. These large projects are not only creating a lot of jobs, but also they are by their very nature can influence the market greatly. Their large volume and the need for sustainable enterprises mean they can and do seriously sway the total dollar and square footage volumes. Not to mention the amount of supporting industries that are required to make the project come about will see a major uptick for each of these projects.

Let us move on to the list of the most important 8 American construction projects starting in late 2019 without further ado.

1. Bankside Development Phase 1

On 21st November 2019, Brookfield Properties announced their opening of a mixed-use construction project along the waterfront in the South Bronx’s Mott Haven neighborhood. The project, named Bankside Development, is construed to be built in two phases, and this is the first phase only.

Spreading over the expensive 4.3-acre New York site, the project is designed to provide 1350 apartments. Though the area is for the higher-income parties, 30% of the total residentials will be under the Affordable New York program targeted for the lower-income bands. The apartments will have a permanently unobstructed view of the Manhattan area.

Divisionally located at 2401 Third Avenue and 101 Lincoln Avenue, the project is expected to end by late 2021. Hill West Architect designed seven towers in the project interconnected by low-rise elements. A new public waterfront park of more than 34000 sqft will frame the entire complex on the Harlem river shoreline, seeking to create a naturalized landscape with varieties of custom seating and an abundance of greenery.

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Published By
Rajib Dey
www.constructioncost.co
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Five Reasons Why Off-site Modular Construction is the New Favorite

What is Off-site Modular Construction

Up until the last decade, we have always known construction business is to be conducted on project site. However, with the advent of technology, a new method of building has come up. This is called Off-site Modular Construction, and it is shaking the construction industry at the roots.

In this process, portions of a building are constructed in remote factories or fields that are specifically set up for that purpose. They are built using the same design and materials - but since they are being built in a factory for that express purpose, the construction takes about half the time. These “modules” are then carried off to the project site and are assembled there to reflect the original design of the entire project.

Growth in Modular Construction Business

There has been an increased demand for off-site modular construction, ever since the construction industry has rebounded up since 2013. Experts project that the market has progressed by 26% between 2014 to 2017.

An estimate is that the projected growth for the period 2018 to 2020 is by 4% every year. Such promising verticals can be associated with the resurgence in sectors such as education, offices, and retail. It is also a gift from with increased market for locality accommodation on infrastructure projects.

Architects, developers, and constructors are all gradually becoming aware of the plethora of benefits offered by technological innovations associated with the modular construction industry. From hotels, retail, offices, public buildings, apartment blocs to simple homes - all sorts of construction projects can be assembled with offsite modular structures.

This method of building is a favorable alternative to regular on-site construction, and it is durable and cost-effective. The main reason for that is the offsite modular building offers great quality and flexibility. It is also faster to finish the project with fewer expenses. Also, when it comes to counting the environmental impact and guaranteeing sustainability, there is no match for off-site construction methods.

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Published By
Rajib Dey
www.constructioncost.co
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The Future of Construction with Robots

Robots make everything better, don’t they? Sure they do. The engineers and architects related to the construction industry think so as well. Construct-o-bots (or similar) have existed in science fiction forever. However, construction and architecture have been the least automated industries until recently. The nature of the work required to build a structure has always required a human mind to drive it, and the sheer number of steps to construct a simple thing and the varieties of tasks to be undertaken for a building translates into doing it manually. Over time, we have started to use machines for each step or task that can be automated or had to be mechanized, for example, concrete mixing, or pumping it far away. But to actually use Artificial Intelligence to make a simple wall has been impossible due to its intricacies. Well, up until now.

It is not like that construction work does not have scope for robotics and automation in it. On the contrary, there are plenty of jobs in a building site that are repetitive but not complex. Also, there are many occasions in a building site where humans would be in great danger. However manual labor has always been plentiful and heavy robotics hasn’t been making much headway until the last decade.

But we have come far indeed. From using pullies and mixing drums, we are now using cranes and dozers operated by joysticks or even by remote. New technologies are opening up new doors in modern constructions. Only in the last decade, we have seen various prototypes like robots to carry stuff, drones to survey, autonomous vehicles for transport, 3D printing for modeling, exoskeletons to augment worker strength and much more. Recently shortages of manual labor and low unemployment in the country are driving modern constructors to consider more mechanized solutions than ever.

Many tasks in construction can be taken care of by robots, including bricklaying, painting, loading, carrying, and bulldozing. In fact, in the transportation field, there are already many AGV’s (Automated Guided Vehicles) and AMR’s (Autonomous Mobile Robots) hard at work, and we can expect to see their numbers multiply significantly in a short while. There are three key factors that are driving the need for more robots in the construction industry. One, that robots can protect or replace human workers in a hazardous work environment. Secondly, increased usage of robots will decrease workplace injuries drastically. Not to mention that a gap in the manpower left by labor shortage can be filled by work bots.

There are already some incredible examples of machines driven by set data taking over large portions in the building sites. Today let us look at a few of some awesome examples of using robots in construction.

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Published By

Rajib Dey

www.constructioncost.co

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