What is 1.54 in Concrete during the calculation of quantity of sand, cement and aggregate?

Here in this image the presenter of this presentation portrays what is 1.54 factor in concrete during calculation of wet volume to dry volume.

HOW TO CALCULATE CEMENT BAGS IN 1 CUBIC METER

PROCEDURE TO CALCULATE CEMENT BAGS IN 1 CUBIC METER:

Let us consider the nominal mix is 1:2:4

Wastage of cement during handling is considered as 2%

Output of mix is considered as 67%

To achieve 1 cum output, we need drymix 1/0.67 = 1.49 say 1.50 cum.

Now add the wastage of 2%, i.e (1.50 + 0.02) = 1.52 cum.

Volume of cement = (cement/cement+sand+aggregate) × Total material

=(1/1+1+4) × 1.52

=0.2171 cum

Now, Density of cement is 1440 kg/cum

Weight of 1 bag cement = 50 kg.

Therefore volume of 1 bag cement = 50/1440

=0.0347 cum.

∴ No. of cement bags required in 1 cubic meter= 0.2171/0.0347

= 6.25 bags.

Note: Same formula can be used for calculating cement for other nominal mixes also.

LIST OF TOP 10 CONSTRUCTION COMPANIES IN INDIA

India, one of the prominent country having top 10 construction companies in India. The infrastructure of India is shaped by this legendary top 10 construction companies in India. While in the economic boost and having the environment of business leads India. A lot of people are workers are working at the construction companies. India has demand and improving the infrastructure stability for more growth in industries. On another hand side for digitization of India, start-up companies are growing looking for rental offices or their own. All these supplements can be fulfilled by the help of top 10 construction companies.

For working of most people government itself posting best construction jobs in government sector. But while hiring by the construction companies, they also provide an average civil engineering salary which is good one.

CAREER OPTIONS IN TOP 10 CONSTRUCTION COMPANIES IN INDIA:
Every year many fresher’s civil engineering students are hired with this a lot number of workers are assigned for the projects. Generally, workers are a work on daily wages basis. But when it comes to a professional job structure, companies used to pay on monthly basis or project basis. Anyone can apply for the job at the top 10 construction companies in India. You must visit the official website of the top 10 construction companies in India and regularly check the career section. Construction companies used to post the vacancies and need of employment on any supervision. If it dos suits you, you may apply.

LIST OF TOP 10 CONSTRUCTION COMPANIES IN INDIA

1. LARSON & TOUBRO

Being India’s prominent construction companies and listed in top 10 construction companies in India, it is also renowned globally. Larsen % Toubro is famous for their construction work and they have employed a total number of more than 87,000 workers. Such a giant company it is! “Company of the Year in Economic Times”  it was awarded to the Larsen & Toubro in 2010. L&T is always listed as one of the best and top 10 construction companies in India and in 2016 also. It is an Indian multi-national conglomerate. The company is not limited to the construction operations but they have other businesses interests manufacturing goods, information technology, financial services, etc.

Headquartered in Mumbai, Larsen & Toubro Limited is one of the largest and most respected companies in India’s private sector. With over 75 years of a strong, customer-focused approach and a continuous quest for world-class quality.

Company Address and Contact Details

Larsen & Toubro Limited L&T House, Ballard Estate P. O. Box: 278, Mumbai 400 001, India Toll-Free Number (India): 1800 2094545 Email: infodesk@larsentoubro.com

Website: www.larsentoubro.com

2. Jaypee Group

Jaypee Group is one of the largest construction companies in India. It was founded in the year 1979 and headquarter in Noida, India. Jaypee Group is also considered as the India’s first largest cement producer. The company has an interest in the fields of Engineering & Construction, Power, Cement, Real Estate, Hospitality, Expressways, IT, Sports & Education (not-for-profit).

The Jaypee Group is a Rs 20,000 crore well diversified infrastructural industrial conglomerate in India. Over the decades it has maintained its salience with leadership in its chosen line of businesses.

The Engineering and Construction wing of the Group is an acknowledged leader in the construction of multi-purpose River Valley and Hydropower projects. It has the unique distinction of having simultaneously executed 13 Hydropower projects spread across 6 states and the neighboring country Bhutan for generating 10,290 MW power. This led the company to become one of the top 10 construction companies in India.

Company Address and Contact Details

Corporate Office Address Jaiprakash Associates Limited Sector-128, Noida - 201304 Uttar Pradesh, India Ph No: (120) 4609000, 2470800 Fax: (120) 4609464, 4609496

Website: www.jalindia.com

3. GMR Infra

The GMR Infra is another legendary company under top 10 construction companies in India. GMR is today a major player in the Infrastructure Sector, with world class projects in India and abroad. The GMR group is headquartered in Bangalore and has been developing projects in high growth areas such as Airports, Energy, Transportation and Urban Infrastructure. It was founded in 1978.

GMR is uniquely placed to build state of the art projects in sectors that are of critical importance in the process of development. Using the Public Private Partnership model, the Group has successfully leveraged its core strengths to implement several iconic infrastructure projects in India.

India’s busiest airport, the Indira Gandhi International Airport (IGIA) in New Delhi is operated by GMR Infra. The integrated terminal T3, the largest terminal in India and one of the largest in the world was built by this Group of the company.

Company Address and Contact Details

Registered Office 25/1, Sklp House, Museum Road, Banglore 5600125, India Tele: +91 8040534000

Website: www.gmrgroup.in

4. Tata Projects Ltd

Tata Company is much famous for its automobile industry. But a company is looking for more growth they have an interest in various fields. However, Tata Projects is one of the fastest growing and most admired infrastructure companies in India. It has expertise in executing large and complex industrial and urban infrastructure projects. In India, the company is considered under top 10 construction companies in India.

The company operates through four strategic business units – Industrial Infrastructure, Urban Infrastructure, Quality services and Utility services. The Company provides turnkey end to end solutions to set up power generation plants, power transmission & distribution systems, fully integrated rail & metro systems, commercial buildings & airports, chemical process plants, water and wastewater management solutions, complete mining and metal purification systems.

Company Address and Contact Details

Registered Office

TATA PROJECTS LIMITED “Mithona Towers -1”, 1-7-80 to 87, Prenderghast Road, Secunderabad- 500003. Tel.No. 040- 66238801 EPABX Fax.No. 040- 66172535 Website: www.tataprojects.com

For more offices visit the company website – http://www.tataprojects.com/contact.html

5. Reliance Infrastructure

Reliance is known to everyone and this one of the giant company in India who offers many services to the people of India. Reliance Infrastructure Limited (RInfra) is a constituent of the Reliance Group, one of the leading business houses in India. RInfra, incorporated in 1929, is amongst the largest and fastest growing companies in the infrastructure sector with a turnover of Rs 18,852 crore and a market capitalization of over Rs 11,300 crore as on March 31, 2015.

Currently, EPC division is executing projects in power and road sectors with a turnover of Rs 2752 crore and an order book of over Rs 5048 crore as on March 31, 2015.

Company Address and Contact Details

7 A, Near Devidas Lane Telephone Exchnage, Eksar Village Borivalli West Mumbai Maharashtra , 400092 Phone - (022) 30099999

Website: www.rinfra.com

6. DLF
DLF (Delhi Land & Finance) has nearly 70 years of track record of sustained growth, customer satisfaction, and innovation. The company has 284 msf of planned projects with 41 msf of projects under construction.DLF’s primary business is the development of residential, commercial and retail properties. The company has a unique business model with earnings arising from development and rentals. Its exposure across businesses, segments, and geographies mitigates any down-cycles in the market. From developing 22 major colonies in Delhi, DLF is now present across 15 states-24 cities in India.

It is one of the largest commercial real estate developers in India and listed in the top 10 construction companies in India.

Company Address and Contact Details

Corporate Office DLF LTD. DLF Centre, Sansad Marg, New Delhi- 110001 Tel: +91-11-42102030

Website: www.dlf.in

7. Hindustan Construction Company

The company was founded in 1926. It is one of the oldest construction companies in India. The HCC has been worked on many famous projects of India such as Bandra Worli Sea Link, West Bengal Highway Project [NH-34],Rajasthan Atomic Power Plant, Rajasthan, etc. These are leading projects executed by the Hindustan Construction company.

HCC is a business group of global scale developing and building responsible infrastructure through next practices. With a group turnover of Rs. 8,768 crore as on March 2015-16, its businesses span the sectors of Engineering & Construction, Real Estate, Infrastructure, Urban development & Management.

Company Address and Contact Details

Hindustan Construction Co. Ltd. Hincon House, 247 Park, LBS Marg, Vikhroli (W), Mumbai - 400083 email: corpcomm@hccindia.com Tel : +91 22 2575 1000 Fax : +91 22 25775732

Website: www.hccindia.com

8. Gammon India

Gammon India is the largest civil engineering construction company in India. It is also listed in the top 10 construction companies in India. It was founded in 1922. One of the oldest construction companies in India. It has a track record of building landmark structures, some of which have become iconic. This includes’ The Gateway of India’, the piling and civil foundation work for which was successfully executed by Gammon as its maiden project way back in 1919.

Currently, Gammon India has a strong talent base of over 3350 employees on its own rolls apart from 5500 officers and staff working under its aegis at various project sites. It further engages more than 200,000 labor/staffon daily wage basis. Its stand-alone turnover in the financial year 2011-12 was close to the US $ 1.1 billion with the Group’s turnover in excess of US $ 1.6 billion.

Company Address and Contact Details

Gammon house Veer Savarkar Marg, Prabhadevi, Mumbai 400 025. India. Tel: +91 22 6111 4000 Fax: +91 22 2430 0221 Email: gammon@gammonindia.com , marketing@gammonindia.com

Website: www.gammonindia.com

9. NCC Infra

The Nagarjuna Construction Company Infra is the major company in India for the construction development in southern part of India. It has completed many landmark projects of India. It has a total number of employ more than 10,000. The company invested over Rs 4250 million in several SPV’s.

Currently, the company has five road projects with an aggregate length of 253 km, 380 MW of Hydro Electrical Projects, Two non-metro Airports, One Sea Port and Re-development of A.P Bhavan (International Center) in its asset portfolio in different stages of development through concession route. The company is betting hugely on the Power Sector and the company’s  Power portfolio consists of 3000 MW Power under implementation phase and 2640 MW under planning phase.

Company Address and Contact Details

Regd. Office : NCC HOUSE, MADHAPUR, HYDERABAD-500081, TELANGANA STATE, INDIA TEL NO.+91-40-2326 8888 FAX NO: +91-40-2326 5555 E-MAIL : info@nccinfra.com

Website: http://nccinfra.com/

10. Punj Lloyd

The Punj Lloyd has the largest branch of regional offices and considered as the largest civil engineering construction companies. However, it has considered as one of the top 10 construction companies in India. It more than 50+ subsidiaries and executed over 200+ mega projects in more than 120+ companies. They have their regional branches in the Middle East, the Caspian, the Asia Pacific, the Europe, Africa and South Asia.

Over various of services are offered by them such as integrated design, procurement, and project management services for energy and infrastructure sector projects.

Company Address and Contact Number

17, Nehru Place Rd, Block 10, Nehru Enclave East, Kalkaji, New Delhi, Delhi 110019 Phone: 011 2646 6105

Website: www.punjlloyd.com

Types of Stirrups

There are can be various types of stirrups depending upon the nature of construction.
Some of them could be:
Single legged, double legged, four legged or six legged stirrups.
In case of column, I have also seen triangular stirrups or diagonal stirrups in use.

Difference B/w Supervisors and Site Engineers:

*.Site engineer will calculate the quantity of shuttering plywood required to cast the slab.
*.Supervisor will make sure the carpenters are on the job and deliver the required quantity of shuttering plywood to the site at the earliest.
*.Site engineer will instruct the supervisor to check the alignment of shuttering.
*.Supervisor makes sure the alignment is fine.
*.Site engineer will calculate the quantity of steel bars required to place in the slab along with the dimensions and shapes.
*.Supervisor will make sure the bar benders are on the job and deliver the required quantity of shuttering plywood to the site at the earliest.
*.Site engineer will instruct the supervisor regarding the placement of bars in the structural member.
*.Supervisor makes sure all the steel bars are placed as per the instructions of Site engineer.
*.While placing concrete,site engineer instructs supervisor how to allocate the manpower to get maximum productivity
.*.Supervisor makes sure the manpower is allocated at the required location as per the instructions of site engineer.

To sum up, Supervisors assist site engineers to maximize the productivity of work.With some experience in the site (may be few years), supervisors can become site engineers.