The Stiff-leg Derrick, a Special Type of Construction Equipment


Stiff-leg Derrick pic

Stiff-leg Derrick

Ghusalal Patel has served as a senior civil engineer with engineering and construction companies throughout New York City and has decades of experience. Recently, he has expanded his work into real estate management, where he oversees a range of projects. Over the course of his career, Ghusalal Patel has worked with special equipment such as the stiff-leg derrick.

The stiff-leg derrick is a piece of machinery that can be used in some cases in place of a crane. It has a mast, a boom, two sills set at a 90-degree angle, and two large stiff legs that give the derrick its name. Though cranes are more popular today, stiff-leg derricks can be very effective. Their lightweight construction allows them to be assembled directly on the structure they’ll be used to build.

Derricks can lift more weight than traditional cranes, and the stiff-leg derrick can be tied down to a structure and used as a counterweight, making it even more efficient. Stiff-leg derricks are best used when there is a strong base support, so they are most often seen on level ground, boat decks, or for the horizontal aspects of some bridges. Derricks have been used in city building for a long time and are still a valuable piece of equipment for modern construction.

Self-Climbing Kakoon System Increases Efficiency and Site Safety


Self-Climbing Kakoon System pic

Self-Climbing Kakoon System

A professional engineer with 50 years of construction industry experience, Ghusalal Patel provides engineering consultation and management services that cover a range of construction projects. Ghusalal Patel’s consultation services have involved offering supervisory assistance with finalizing technical construction drawings and managing methods to increase safety, work quality, and cost efficiency on large-scale projects.

Previous projects include the 67-story One Manhattan West, the centerpiece of an eight-acre development within Hudson Yards District in New York City. In order to simplify the construction of buildings like this, teams can use an exclusive self-climbing kakoon system designed by Despe S.p.A. The system weighs 900 tons, stands 6 stories high, and creeps up the building hydraulically in the form of structural steel for later installation around the building’s concrete core. The kacoon enables workers to safety navigate the site’s parameters over 6 levels, thereby improving efficiency and creating a safer construction environment. While higher in initial cost than other construction methods, the system provides savings in time and labor.

A Look at Some Common Types of Cranes

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Types of Cranes

An experienced engineer, Ghusalal Patel holds a degree in civil engineering from Gujarat University, in addition to an advanced degree in management from the Polytechnic Institute of New York. Ghusalal Patel currently serves as a senior engineer in New York, where he has become an expert on the placement of cranes at construction sites.

Cranes allow the movement of heavy loads using a combination of pulleys, cables, and counterweights. They are typically used in the construction and manufacturing industry, and are often employed for a specific project. Due to this, cranes are often built temporarily or are mounted on a mobile vehicle.

Mobile cranes, which feature a hinged boom controlled by a pulley systems, are just one of several common crane designs. Telescopic cranes employ hydraulics to extend or decrease the boom length, while tower cranes can reach great heights and offer maximum lifting capacity. Tower cranes are fixed to the ground and oftentimes to a building past a certain height to help offset heavy loads. Alternatively, loader cranes are most often used in manufacturing settings. They feature a hoist attached to overhead beams, which allows movement around the manufacturing space.

A wide range of other crane designs exist, from crawler trains to aerial cranes. All feature unique design components suited for specialized applications.

Temporary Structures – An Engineering Specialty


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Temporary Structures

New York-based, engineer Ghusalal Patel brings over five decades of experience to his work. Ghusalal Patel specializes in specific aspects of construction projects such as creating temporary structures.

Temporary structures such as scaffolding, platforms, and ramps are important parts of construction projects. They may be required to hold a great amount of weight, or be used by many people during the course of erecting a more permanent structure. They are not, however, as regulated as the final structures, so their engineering requires different skills and planning to ensure that everyone who uses them remains safe throughout the building process. Many of the accidents that happen on construction sites involve these temporary structures.

Even today, temporary structure design is a relatively rare specialty despite its importance in construction projects, and engineers may need to take separate courses on the topic after their initial training. There are weekend seminars devoted to the topic offered by EPIC in Canada, for example, or New York City’s 2015 Build Safe Live Safe conference. Additionally, the first book devoted exclusively to the topic, Chris Souder’s Temporary Structure Design, was published in 2014.