What Is the Difference Between Concrete vs. Shotcrete

Concrete is a building material that arrives in various choices, including lightweight, heavyweight, permeable, and fiber-reinforced, to fit a scope of development needs. It comprises fine shakes mixed with water and glue that solidifies. A popularly utilized special type of concrete is known as "shotcrete."

The significant contrast among shotcrete and concrete is the placement technique. The shotcrete procedure, in the case of utilizing wet or dry material feed, doesn't require forming or compaction accordingly improving plan imagination and application adaptability, regularly bringing about a reserve fund of time or cash.

What is Shotcrete

Shotcrete is a particular kind of concrete that can either be dry-mix or wet-mix. It's gotten known for its exceptional application process that varies from customary concrete. Shotcrete was initially called "Gunite" when Carl Akeley planned a multiplied loaded concrete gun in 1910. His mechanical assembly pneumatically applied a sand-concrete mixture at a high speed to the expected surface.


Different trademarks were before long evolved known as Guncrete, Pneucrete, Blastcrete, Blocrete, Jetcrete and so forth all alluding to pneumatically applied concrete. Today Gunite likens to dry-mix process shotcrete while the expression "shotcrete" normally depicts the wet-mix shotcrete process. At the purpose of use, both are commonly alluded to as shotcrete.

Dry-mix Shotcrete

Dry-mix process shotcrete presents and mixes the necessary water at the application spout as the dry cementitious materials (fly ash, slag, silica fume and so forth.) and totals are conveyed through the "gun". The nozzleman controls mix consistency, altering water expansion to suit the changing states of the work region.



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Published By
Rajib Dey
www.constructioncost.co
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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.

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Published By

Rajib Dey

www.constructioncost.co

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Download MEP Estimating Software

The Viewpoint MEP Estimating (Which was earlier known as Maxwell Estimation) is actually a sophisticated estimating programme altogether.

It has range of specialization such as generating estimates, takeoff for HVAC, mechanical, residential and commercial plumbing and electrical firms.

It consists of trade-specific abilities of estimation to generating the help of most of the accurate and financially reasonable estimates possible.

This software also consists of a database update with most recent price for materials and labour for every industry.

The viewpoint MEP Estimating also includes some salient features in the likes of:

There is also some “what-if” analysis. The integrated takeoff module permits users to download plans from online plan rooms and use them to generate takeoffs devoid of stylus pens and digitizer boards. GTCO’s Rollup Digitizer and Rigid Digitizer integrate with the system to streamline the takeoff process, if estimators prefer to use digitizer boards.

The Rollup Digitizer is a smile digitizer set up for utilizing in the field and designed to effortlessly roll up into a convenient carrying case, while the Rigid Digitizer is an everlasting fixture offering a more traditional digitizer board. In addition to all this, users ill take pleasure in a conversion calculator, CAD file integration, automatic scaling, and other features.

Viewpoint has exact solutions for every role in the project ecosystem as part of its integrated product platform, from mobile apps to serve up the field staff to content management solutions for estimators and contract administrators. It’s a best fit for any type of contractor, business role, or project role, including General Contractors, Subcontractors, CEOs, Suppliers, Architects, Project Managers, or Engineers.

Download MEP Estimating Software

Image Courtesy: softwareadvice.com

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Published By

Rajib Dey

www.quantity-takeoff.com

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Building Code Basics, Residential

Take away the uncertainty about applying the International Residential Code (IRC) with this user-friendly guide from the Building Code Basics series.

Unlike other books on the market, Building Code Basics Residential uses simplified, non-code language and logical topic organization to make complex code concepts more understandable.

It avoids the technical language associated with the IRC and instead features code references and descriptive illustrations and tables to explain code fundamentals. Chapters progress in the order of construction, from site-work and foundations through to fire- and life-safety and environmental requirements of a finished residence.

Also included are requirements for plumbing, mechanical, fuel gas, electrical systems, and equipment. Building Code Basics Residents fills the existing gap for technically accurate, highly illustrative residential code resources, making it an ideal resource for both beginning and experienced code users to ensure compliance.

Check out our app, DEWALT Mobile Pro. This free app is a construction calculator with integrated reference materials and access to hundreds of additional calculations as add-ons. To learn more, visit dewalt.com/mobilepro.

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Published By

Rajib Dey

www.quantity-takeoff.com

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The Fluor legacy codes are very useful for construction estimator

In my experience, the best convention for cost codes are numeric. The Fluor legacy codes are the most comprehensive and flexible because of the order of the prime / sub-prime / detail / cost type. The entire cost code including the cost type is contained in 6 characters as follows:

• 101001
• 1= Prime (Concrete)
• 10= Sub-Prime (Concrete / General Account)
• 10-100= Prime / Sub-Prime with 3 digit Detail (Concrete / General Account / Testing)

To elaborate, the prime supports the natural order of construction as follows:

Direct Accounts

• 0 account - Site @ Civil
• 1 account - Concrete
• 2 account - Structural
• 3 account - Architectural
• 4 account - Mechanical
• 5 account - Piping
• 6 account - Electrical
• 7 account - Instrumentation
• 8 account - Painting, Tracing, Insulation (Other Directs)

Indirect Accounts

9 account - All Indirect costs

Further to the First character, the sub-prime breaks down the prime into a further 10 sub-primes. In the case of an account like electrical, you can establish meaningful commodity based categories at the sub-prime level as follows.

• 60 = Electrical General
• 61 = Major Electrical Equipment
• 63 = Power and control Cable
• so on and so on...
• 10-100- 1- Prime / Sub-Prime with 3 digit Detail & Cost Type (Concrete / General Account / Testing / Labour)
• Personally, I have used the Fluor legacy codes throughout my entire career across a variety of industries ad projects of all sizes. They truly are a set of codes that could be adopted by the AACE or the CII as a best practice coding convention !!!
• I am happy to answer any questions on applying these codes at any phase of a project.

 

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Published By

Rajib Dey

www.quantity-takeoff.com

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