The principle of how the tower crane works is a combination of the sheaves in the Geojunggi and Archimedes’ principle of the lever. A Luffing Crane lifts the jib vertically and takes the shape of the letter “L” to avoid obstacles within the operating radius. A T-Tower Crane is shaped like the letter “T” and consists of a tower mast, which is the vertical column, and a jib, which is the horizontal arm, forming a right angle. Tower cranes are divided into T-Tower Cranes and Luffing Cranes. l What Are the Scientific Principles Behind Tower Cranes? *HSA650(High Strength Steel for Architecture) : Steel for structural construction with high yield strength of 650Mpa-class and seismic performance. These places have another thing in common - they utilized tower cranes in lifting the pillars and columns crafted with HSA650. HSA650 *, POSCO’s premium high-strength steel for construction, was applied to the Lotte World Tower, Dongdaegu Bus Transfer Center, and Incheon International Airport Terminal 2. Thus, enabling the beautiful skylines and landmarks of downtown areas. With this machinery, it becomes possible to transport heavy loads of more than 3 tons in any direction - up and down, left and right.
Therefore, lifting heavy materials higher has become necessary, and the construction machinery suitable for this is the tower crane.Īs the name suggests, a steel-made tower crane refers to a crane that is as tall as a tower. With technology development in structural mechanics, modern buildings are becoming taller and bigger. Geojunggi was applied in the construction of Suwon Castle. In Korea, the first crane to be recorded was “Geojunggi,” and it was invented by Yak-Yong Jeong in 1794. When the ancient Greeks built structures like the Parthenon, they needed to lift heavy marbles, and they did so by attaching sheaves to long wooden posts. The invention of the crane goes back to 6c B.C, Greece. What if there were tower cranes of today when building the pyramids of Giza? Since a tower crane can lift construction materials amounting to dozens of tons at a speed of more than 50 to 80m per minute, it would have taken less than two to three years to complete a pyramid. No wonder some say that the pyramids were built by aliens. They say that it took about 20 years to build a single pyramid, so when calculated, it could be said that more than 13 blocks - which weigh more than 2.5 tons - were stacked per hour, day and night. No one knows exactly how the Egyptians transported the stone blocks, but many scholars presume that they created slopes on the sides of the pyramid and moved the stones using a wooden roll. The completed pyramid was gigantic - 147m high, 230m wide, and 230m long. The pyramids in Giza, northern Egypt, are considered one of the 7 Wonders of the World! They are said to be built about 2,500 years ago by ancient Egyptians who piled up 2.3 million blocks totaling over 2.5 tons. Before finding out more about tower cranes, let’s first look into an ancient construction method. In fact, tall buildings can not be constructed if it wasn’t for the tower cranes. Attached to the slewing unit is the boom, the machinery arm, the counterweights and, the Operators Cabine.STEEL Talk presents to you interesting stories of Science, Technology, Energy, Environment, Life - and of course STEEL!Ī tower crane sure looks like a giant standing tall like a commander at a construction site. Attached to the top of the tower is the slewing unit that allows the crane to rotate.Ĥ. The base connects to the tower, which gives the tower crane its height.ģ. The base is bolted to a large concrete pad that supports the crane.Ģ. The fee differs from site to site, so please ask us for a quote for installation and disassembly.Īll tower cranes consist of the same basic parts:ġ. The Tradehouse A/S organization would mobilize the crane to the jobsite, assemble it and charge a monthly fee while the crane is on the site. Most construction companies rent their tower cranes from another company, here Tradehouse comes into the picture. Counterweights – up to 20 tons (16.3 metric tons).Maximum lifting power – 19.8 tons (18 metric tons).How Much Weight Can Tower Cranes Lift?Ī typical tower crane has the following specifications:
The construction crew uses the tower crane to lift steel, concrete, and a wide variety of other building materials that are used.īelow you will find information about Tower Cranes, Railbeams, Hoist for material and Operator, and wear parts. Tower cranes are a common fixture at any major construction site, and rise hundreds of feet into the air. Tower cranes world wide trough Tradehouse A/S