Tower crane manufacturers are eying projects that are undertaking precast construction by offering heavier capacity cranes with advanced features for the desired accuracy in hoisting and slewing, and for enhanced safety. NBM&CW reports.

Kaif  Infra

Hitherto restricted to civil structures such as tunnels, bridges, flyovers and underpasses, precast construction is finding gradual acceptance in commercial and residential real estate projects as well. The precast construction method provides benefits such as faster and timely completion of projects, better quality of work, and is less labor-intensive.

The concrete precast sections are factory-produced in a controlled environment, and then transported to site, where they are installed with the help of tower cranes and other equipment. The process requires a high level of precision in the production of the precast sections, and complete accuracy in their placement at site, which is done by high capacity tower cranes.

Amol Badgujar
"The first thing customers look for is capacity. Beams used in precast work weigh around 12 ton or 10 tons at a minimum. There are also very fine margins in the placement of precast components, so customers want a crane with close control. Finally, they will also want the greatest possible free-standing height – typically around 60 m. The most popular Potain cranes for precast construction are our MC 465, MC 475 and MD 689, as well as MD 1100 from our MD Maxi range as these cranes take into account all the factors for precast construction," avers Amol Badgujar, Regional Sales Manager, Manitowoc.

He says that Potain's LVF variable frequency technology automatically adjusts movements to the load on the hook and gives operators greater flexibility in both fast and slow lifts. The technology features in many Potain cranes in India that are purchased for precast work.

ACE Tower

Action Construction Equipments (ACE) is providing indigenously manufactured tower cranes of 10 ton to 25 ton capacity. A special grade of steel for mast and associated hardware has been used in the cranes to enable them to lift the heavy concrete sections. All the hardware and components are tested by a third party. The cranes are equipped with VFD (variable frequency drive) for smooth and jerk-free operation while hoisting and slewing.

Mayank Pundir
Says Mayank Pundir, Country Head-Tower Cranes, ACE, "Since the crane operator has to place the heavy concrete precast segments with great accuracy, we have equipped our cranes with Safe Load indicators (SLI), which indicates the weight of the material being lifted, along with the safe load at that radius. In fact, SLI is a third level of safety after the moment limiter and the ergo meter. Our tower cranes are also provided with anemometers to check the wind speed. In high wind speed conditions, tower cranes are not supposed to work, plus the jib is left free to align itself to the wind's direction, thereby reducing the wind pressure on the crane. We also offer an anti-collision device for building projects where two or more tower cranes are working close to each other."

Arun Bishnoi
Zoomlion ElectroMech has tower cranes ranging from small models with tip loads of 1.3tons at 50m up to 40tons at 40m. "Heavy capacity tower cranes make construction at sites easier, faster and safer. The mast configuration in our various models gives higher free-standing heights, which is an important criterion in precast construction as it becomes difficult to fix a walling anchor if the design of the building is based on a load-bearing wall structure. Our flattop tower cranes of 10-ton to 150-ton are designed in compliance with JOST German technology to give best-in-class lifting capacity at various radius," informs Arun Bishnoi, Director – Sales, Zoomlion ElectroMech.

"The recent push for affordable homes by the Central Government has seen high demand for precast homes as the volume is very high and timelines are very short. Our cranes are equipped with unique operation control through SLI + PLC + VFD in all motions i.e. hoisting, slewing and trolley, to give micro motion and precise motion control for very high accuracy. Anti-collision device is also provided in case multiple cranes are working in close proximity," he adds.

Krishna Kumar
Krishna Kumar, Divisional Head-Liebherr Tower Cranes India Pvt. Ltd., informs, "Liebherr tower cranes have special features like Micromove for handling precast elements. Micromove helps in achieving a minimal speed and high accuracy while positioning loads, which save time and avoid any damage to precast panels and the structure. The cranes also feature an advanced safety function called 'Guided lowering functions' to help avoid any free fall of loads or malfunctioning of brakes."

VG Shakti kumar
Schwing Stetter India has a wide range of XCMG flattop tower cranes from 10 to 25 tons for use in precast construction. Says V.G. Sakthikumar, Managing Director, Schwing Stetter India, "Since tower cranes have to lift heavier loads and withstand heavier dynamic factors like wind speed, the sections of our tower cranes are made of a superior grade of steel and welded by automated robotic welding. To ensure greater reliability, the cranes have superior quality controls, gear boxes and other components sourced from global manufacturers."

Advanced Technical Support

Every step of precast construction requires both macro- and micro level calculations. Project developers, therefore, during tower crane selection, look for the right tonnage, jib length, tip load, precise crane configurations, their safety and other features, and cost benefits. The selection process also involves a close collaboration amongst project heads and crane manufacturers to assess the project's exact requirements, the minimum numbers of cranes that will do the job, and cost estimation.

Liebherr Tower Crane
Arun Bishnoi concurs, "Precast construction is in a nascent stage in India, therefore clients are not aware of many things. They do not take into consideration the correct tower crane estimations during the project planning stage, as the cranes used in precast construction must be of a much higher capacity than required in conventional construction. We at Zoomlion ElectroMech, take all inputs from client such as project completion timeline, element weights, building layout etc. and factor in all these to calculate the cycle times for construction of each structure/building and then select the model and number of cranes to cover 100% building area, stockyard and unloading points."

Zoomlion ElectroMech offers operation and maintenance as a package deal. Service is rendered by well-trained personnel and operators. Regular service camps are organized at job sites so as to minimize breakdowns and machine downtime."

Says Pundir, "Broadly, the two most important criteria in selecting a tower crane are lifting capacity and stability. However, the choice of tower crane for a particular site also depends on factors such as type of loads that have to be lifted; height and horizontal distances that need to be covered; radius of the swing, and time period of the lifting operations. At ACE, we take into consideration all these factors and deliver the right solutions. We also provide customized Autocad solution to customers to maximize utilization of the cranes."

ACE tower cranes are supported by a pan India sales and service network operating from more than 100 locations and with over 50 dedicated service engineers. The cranes are working at various precast construction projects such as the Zuari Cable stay bridge in Goa (being executed by Dilip Buidcon); the Amrapali Developers Housing Project in Noida; the Pradhan Mantri EWS project in Hyderabad (by DEC Infrastructure), the Central Park project in Gurgaon, and the Jain Temples being constructed in Bhopal and Kundalpur.

Tower Crane QTZ80

Sakthikumar informs that Schwing Stetter India provides installation, commissioning with follow-up training for safe operation of the cranes and dismantling of its cranes. "We have a close collaboration with customers right from the conceptualization stage of the project to gather the necessary information pertaining to the weight of the precast sections to be lifted, the radius and height at which the sections are to be lifted, and most importantly, the cycle times that will be required as per the project completion schedule. We deploy the right cranes based on all these factors."

Liebherr has a project department called TCS for Tower Crane Solutions. People from this department and customers discuss the project requirements and the most suitable, economical and technically solutions are proposed. "This service is given for free by Liebherr and customers benefit by executing the project safely and on time. One of the prestigious projects where our cranes are working is in Bangalore, which is being executed by M/s Sobha where 4 Liebherr 550 EC-H 20 cranes are deployed, of which three are on rail version."

Liebherr service engineers render the appropriate training and product familiarization to P&M staff/operators, and the company has service centers in various locations across the country.

Manitowoc Tower Crane

Manitowoc's Potain tower cranes are catering to customers like KEF and L&T for precast work in India. "Our customers know our cranes well and value our expertise and insights. We also make sure that we fully understand their needs and the project needs before making recommendations. As the world's leading tower crane brand, Potain cranes offer the best solutions. There is demand for cranes in precast construction, though not widespread yet in India, but certainly better than what it was a few years ago," says Badgujar.

Precast developments that have been completed using Potain cranes include Yenepoya University in Mangalore and the Meitra Hospital in Calicut. Manitowoc's most recent delivery was to KEF of its MD 689 tower crane for a project of Infosys in Bangalore, and another high capacity unit will be delivered by end of February.

According to Badgujar, Manitowoc's customer support is regarded as one of the best in the industry and a reason why many customers continue to invest in Potain cranes. "Manitowoc Crane Care program is built around maximizing crane uptime and delivering industry-leading return on investment to Potain crane owners. We assist customers with installation of the cranes at project sites and give onsite training to operators and technicians. Our service team responds immediately to any technical issues and we stock a high number of spare parts in India so there is minimum disruption caused by repair work," he says.

Zoomlion ElectroMech

For proper selection and application of tower cranes, manufacturers must collaborate closely with the contractors, and render end-to-end technical support across the project and equipment's lifecycle. This will instill confidence in the performance and reliability of tower cranes in precast construction, and thereby, such precast projects will gain traction in the building industry.
Key Handover Ceremony of First Franna Crane in Delhi by Alpha Services
Alpha Services, the authorized sales and service dealer for Terex Franna cranes in NCR, handed over the first Franna FR17 crane in Delhi to a leading crane hiring company, Shree Ganpati Cranes, Ghevra, Delhi. Owner Krishan Kumar expressed

Read more ...

Vita Industrial’s load stabilization technology to increase efficiency and profitability of crane companies
Vita Industrial’s Load Navigator uses a powerful system of sensors and air thrusters to automatically stabilize loads. The Navigator will be matched head-to-head against taglines, showing how load stabilization can increase

Read more ...

Manitowoc’s total lifting solutions aimed at serving the infrastructure, alternative energy, and industrial end markets
At bauma Munich 2022, Manitowoc showcased a dozen cranes from Grove and Potain, and highlighted its expanded range of support solutions that cover monitoring, parts, service, rental, remanufacturing, finance, and more. The new technologies

Read more ...

Forklift Market: Long Term Growth Trajectory Remains Positive
Maya Xiao, Senior Analyst, Interact Analysis, gives insights on how the Forklift Market is responding to the current geopolitical and economic climate. Forklift shipment growth had plateaued to some extent

Read more ...

Liebherr Showcases First Flat-Top Crane & Luffing Jib Crane with Fibre Rope Technology
The largest addition to the ‘Tough Guys’ series: Liebherr is expanding its EC-B series upwards with the 520 EC-B 20 Fibre. The new flat-top crane with fibre rope and a lifting capacity of up to 20 tons was introduced at bauma Munich

Read more ...

Manitowoc’s total lifting solutions aimed at serving the infrastructure, alternative energy, and industrial end markets
At bauma Munich 2022, Manitowoc showcased a dozen cranes from Grove and Potain, and highlighted its expanded range of support solutions that cover monitoring, parts, service, rental, remanufacturing, finance, and

Read more ...

Comansa presents New LCH300 hydraulic luffing jib crane and Crane Mates– a novel digital solution for fleet management
Spanish tower crane manufacturer Comansa presented its innovative model at Bauma Munich 2022 and its expanded range of luffing jib cranes with the launch of the LCH300, its first hydraulic model, with a maximum load capacity of 16

Read more ...

Zoomlion R-generation Tower Cranes and Green Forklift debut
R220-10S, R90-5RE and other tower cranes tailored by Zoomlion for the European market made a debut and led a new trend at bauma Munich. The R220-10S is a flat-head tower crane based on the future-oriented digital, green, and

Read more ...

TADANO New Crane Models, Technologies, and Solutions
The Tadano Group has expanded its product line, enhanced the Tadano Customer Experience, contributed to community development, and advanced its business activities to protect the global environment. Using the OneTadano concept, the

Read more ...

Enerpac introduces new hydraulic gantry system SBL600
The SBL600 gantry is the latest addition to the SBL-Super Boom Lift hydraulic gantry range. With maximum lifting height of 10.6m, the three-stage telescopic hydraulic cylinder features a foldable boom allowing transportation on standard

Read more ...

Sennebogen machinery is reliable with the latest safety and environmental standards
Displayed at bauma 2022, was the first battery-powered telescopic crawler crane – the 653 E Electro Battery. The new 50-ton battery-powered crane combines the benefits of battery technology with the proven advantages of the

Read more ...

PALFINGER’s Pioneering Solutions
PALFINGER, a leading producer and provider of innovative crane and lifting solutions, demonstrated its comprehensive digitalization competence at bauma Munich. The focus was on three key core topics: Smart Solutions, Smart Services

Read more ...

Fassi Presents 3 Electric Solutions
Fassi’s three solid and operational electric solutions presented at bauma Munich were the SHT and Plug-In systems, and the 'full-electric' truck-crane combination produced in collaboration with Volvo Trucks. Also, Fassi

Read more ...

Bridging the Gap
The importance of understanding work equipment selected for the task in hand. Training providers can only support workers if they understand the risks involved. It’s been more than 30 years of working in the world of safety and I have seen a massive

Read more ...

Geopolitical Climate Creates Perfect Storm for Forklift Manufacturers
Maya Xiao, Senior Analyst, Interact Analysis, gives insights on how and why the current international problems have strained the market. As with almost every industry, supply chain constraints due to Covid-19, coupled with the current geopolitical climate, have created a perfect storm for forklift manufacturers. Our new research has downgraded

Read more ...

Comansa to Present New LCH300 Hydraulic Luffing Jib Crane at Bauma Munich 2022
Spanish tower crane manufacturer Comansa has expanded its range of luffing jib cranes with the launch of the LCH300, its first hydraulic model, with a maximum load capacity of 16 tons and reach of 60 metres. The tower crane manufacturer will officially showcase

Read more ...

Franna Hosts Open Day at Hosur Facility; Showcases FR 17 Pick-n-Carry Cranes and a new prototype for Indian Market
At the Franna India Open Day, the company gave a tour to visitors of its manufacturing processes and products and shared its business plans for the Indian market. On the sidelines of the event, NBM&CW discussed with Kieran Hegarty

Read more ...

Liebherr Cranes Promise Total Cost of Ownership
Liebherr will continue to position its cranes as high premium, value-oriented products in the rapidly evolving Indian mobile and crawler crane market, informs Subhajit Chandra, Head-Marketing, Liebherr Cranes India, while discussing the company’s marketing

Read more ...

Safety at Height - Grounds for Concern
Entrapment is a leading cause of injury and death when using MEWPs; operating equipment from the ground to position workers at height significantly increases the risks involved. Entrapment is where MEWP occupants become trapped between the controls or guardrails

Read more ...

Spartan installs Special Elevator to reach the new National Emblem atop the Parliament Building
Prime Minister Narendra Modi stepped into a specially designed elevator that took him straight to the 6.5m high National Emblem atop the new Parliament building. When he unveiled the National Emblem, India celebrated the superb sculpture - a symbol of New India

Read more ...

×
Sign-up for Free Subscription
'India Construction Week'
Weekly e-Newsletter on Construction Industry
Get the latest news, product launches, projects announced / awarded, government policies, investments, and expert views.
Click here to subscribe.
×