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Clinker silo steel structure – Case Study

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Clinker silo steel structure – Case Study

 

 

Project scope:
The erection of steel structures on a clinker silo such as the ring beam, rafter frames, penthouse, and conveyor galleries.

Equipment used:
Liebherr 110t mobile crane, Liebherr 250t mobile crane, Liebherr 450t mobile crane, Kobelco 250t crawler crane, IHI CCH2500 – 250t crawler crane, Demag 650t crawler crane.

Load details:
Penthouse assembly (150t), Ring beam assembly (70t), Rafter assembly (25t), Conveyor Gallery (48t)

 

 

Project execution: 

A 650t crane was rigged up and lifted the ring beam assembly above the silo. Stay cables were used to secure the ring beam at 44m. Two 250t cranes are used to connect the rafter assembly (25t each). Once the rafters have been assembled, the silo’s load is gradually released.

The entire penthouse set (150t) of dimensions (15m x 15m x 22m) is lifted and placed on top of the ring beam with a rafter.

As per the scope we initially lifted the 40m long conveyor in tandem with 450t and 250t cranes and erected it over the existing column and silo.

 

Challenges of the project:

  • The main crane had to hold the ring beam above the silo for 15 days. During these days, the rafters and purlins were installed, increasing the load from 70t to 135 tons.
  • The rigging arrangement of the penthouse assembly was designed to lift the load with minimal stress on the steel structure. Detailed load analysis was done, and counterweights were added to the structure to ensure the COG of the load remained at the centre of the structure.
  • Since the site is near a mountain, the wind speed created a tunnel effect, and the load surface area is also large, we had to calculate the permissible wind speed.
  • To complete the project, a complex rigging system was created.

 

 

Penthouse structure at JSW cement 

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Penthouse structure at JSW cement – Case Study

 

 

Project scope:
The erection of clinker silo structures such as the ring beams, rafter frames, penthouse, and conveyor galleries.

Equipment used:
Liebherr 110t mobile crane, Liebherr 250t mobile crane, Liebherr 450t mobile crane, Kobelco 250t crawler crane, IHI CCH2500 – 250t crawler crane, Demag 650t crawler crane.

Load details:
Penthouse assembly (150t), Ring beam assembly (70t), Rafter assembly (25t), Conveyor Gallery (48t)

 

 

Project execution: A crane has been rigged up and lifted the ring beam assembly above the silo. The ring beam was secured with stay cables at 44m. Then with the help of 2 x 250t cranes, the rafter assembly (25t each) is connected. The silo’s load is gradually released once the complete rafters have been assembled. After the ring beam is erected with a rafter, the entire penthouse set (150t) of dimensions (15m x 15m x 22m) is lifted and placed on top. As per the scope we initially lifted the 40m long conveyor in tandem with 450t and 250t cranes and erected it over the existing column and silo.

 

 

Challenges of the project:

  • The main crane had to hold the ring beam above the silo for 15 days. During this day, the rafters and purlins were installed, increasing the load from 70t to 135 tons.
  • The rigging arrangement of the penthouse assembly was designed to lift the load with minimal stress on the steel structure detailed load analysis was done, and counterweights were added to the structure to ensure the COG of the load remained at the centre of the structure.
  • As the site was near to maintain the wind speed was high which created a tunnel effect and the load surface area is also high, we had to calculate the permissible wind speed to mitigate the tunnel effect.
  • A complex rigging system

 

Al Faris recently installed a Steam Box at a new Waste to Energy Plant in Dubai

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Al Faris Group along with our partners Fabtech International relocate structures that are the biggest of its kind in the mining world.

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Al Faris Group executed the complete logistics chain for 30 overflow tanks at Dubai Solar Park!

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Al Faris Group takes delivery of the first new generation Mercedes- Benz Arocs SLT in the MENA region!

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Al Faris Group adds the first Liebherr LR 1500 in the MENA region to its growing fleet.

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Al Faris Group adds the first Liebherr LR 1500 in the MENA region to its growing fleet.

Al Faris – Market Leader with the largest fleet of cranes and other heavy equipment in the Middle East region is excited to announce the arrival of various cranes and other heavy equipment to its growing fleet which is the largest in the Middle East.

A few cranes to be added this month are the Liebherr mobile cranes ranging from 110t to 500t along with the powerful and compact Liebherr LR 1500, 500t crawler crane. 

At Al Faris we continuously invest in the latest technologically advanced equipment and ensure the best solutions to our customers.

Al Faris now in IRAQ!

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Al Faris lands in IRAQ!

With a brand-new fleet of heavy lifting and heavy haulage equipment and a highly experienced team with vast local knowledge and global experience headed by Mr. Alberto Pittaluga, Al Faris is ready to fully serve your heavy lifting and heavy transport requirements. Mr. Alberto Pittaluga comes with immense industry knowledge, credibility and over 20+ years of experience in challenging regions including Iraq.

We have invested in the latest advanced equipment in our fleet. Our heavy lifting equipment includes Liebherr cranes ranging from 100t to 600t and our heavy haulage equipment includes hydraulic trailers, SPMT’s, semi-trailers and low-bed trailers.

We also provide alternative lifting solutions like Jacking and Skidding techniques in confined spaces. Our equipment includes hydraulic gantries and other modular push-pull skidding systems.

We have already successfully completed projects in West Qurna 1, West Qurna 2 and Al Faw in Iraq.

Apart from the quality of our equipment, we provide a strong commitment to investment in the development of HSE practices which is our focus across all our operations. Our safety, health and quality standards are well integrated in our daily work, training and all on-site jobs.

Al Faris is going Solar!

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AL FARIS IS GOING SOLAR!
Installing 1342 solar panels on our facility roof.                                                                                                                                                                                                                                          

At Al Faris sustainable operations and solutions have always been our priority.Re-enforcing our 2020 environment sustainability goals we are installing solar panels all over our facility in our head office in Dubai thus reducing our carbon footprint and making use of renewable energy.

Al Faris places major order with Liebherr worth around 80 million euros!

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Al Faris places major order with Liebherr worth around 80 million euros!

We have placed an order with Liebherr for 69 mobile and crawler cranes. Al Faris is also one of Liebherr’s largest customers in the world and currently has over 600 Liebherr cranes in its fleet. In the past two years alone, Al Faris has received around 60 mobile cranes from Liebherr.

The new order includes 12 LTM 1230-5.1 models and one LTM 1500-8.1. The latter was officially handed over to Al Faris in February in Dubai, together with the first LTM 1230-5.1, which is also the very first of its kind in the Middle East.

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