Tower Crane Gallery – 7
A huge tower crane with reinforced mast sections that has three wall ties linking to the building, normally a bracket is used for the connection with the wall tie (beams) on the building.
The telescopic cage is not installed on the tower crane, maybe no further mast addition is needed.
Tower Crane Gallery – 6
This tower crane is a telescoping crane with mast addition during the climbing process. A telescopic cage is attached on the tower crane and lowered to the bottom position of the crane to prevent overturning.
Tower Crane Gallery – 4
This is another view showing the dock with 2 tower cranes installed for the ship repairs or other marine services. The tower crane is sitting on the steel structures that are raised up by 4 steel columns, there are 4 struts linked between the edge of the steel foundation and the tower crane mast section.
The two tower cranes are on a fixed foundation rather than on a rail moving system, so the ship has to move along the rail to the working radius of the tower crane.
Tower Crane Gallery – 3
A luffing crane with a telescopic cage which are ready for mast addition later on.
Tower Crane Gallery – 2
This is the dock with 2 tower cranes installed for the ship repairs or other marine services. The tower crane is sitting on the steel structures that are raised up by 4 steel columns, there are 4 struts linked between the edge of the steel foundation and the tower crane mast section.
Tower Crane Gallery – 1
This picture is showing a tower crane dismantling process, the tower crane with white mast section is dismantled by a roof crane, and the vertical parts of the tower crane is dismantled, leave with only the mast section.
The tower crane is a telescoping crane that sit on a cantilever bracket and with a wall tie system almost on the top of the building. The wall ties ( beams) have been dismantled as shown on the picture.
Tower Crane Markings and Documentation – Instruction manuals and log book
Manufacturer’s manuals containing all pertinent data relating to operation and maintenance for the specific model of crane in use must be provided with each machine.
The language used in the majority of the workforce in Hong Kong, especially among the shop-floor operations and the middle supervisory staff, is Chinese. It is essential that all the written instructions, the documents and literatures given by the crane manufacturers in relation to the safe use of the cranes (such as the load charts), if not in Chinese, be translated into Chinese so that the operatives have no difficulty in understanding them. Suitable arrangement should also be made to enhance communication in workplace where people would use languages other than Chinese or English.
If the equipment is not supplied with a log book then one should be started, maintained and kept at the workplace for the regular, periodic recording of all inspections, tests, repairs, maintenance, and hours of service related to the machine. All entries should be dated and signed by the operator, repairman and supervisor. The crane owner should ensure that the log book remains with the crane and is kept up-to-date throughout the working life of the crane
The crane should have a substantial/durable safe working load chart which:Tower Crane
has clearly legible characters in English and Chinese and figures displayed
inside the crane (Regulation 11(1) of the LALGR); and
is easily visible to the crane operator.
Tower Crane Markings and Documentation – Identification
The crane should have a permanent durable plate bearing the manufacturer’s name, machine model, serial number, year of manufacture and weight of the unit for identification purpose.
Every major structural, electrical and mechanical component of the machine should have a permanent durable plate or a clear indication bearing the manufacturers’ name, machine model number, serial number, year of original sale by the manufacturer and weight of the unit. Besides, identification numbers should be clearly marked on all basic removable components and attachments of the machine (such as counterweights etc.) to show that they belong to that machine. It is important that these components should be used only on that machine or identical models or equipment for which they were specifically intended by the manufacturer.
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