| Towercranes Information and Resource | | | | load moment indicator comes in, and it is |
| Working with high-rise structures is as dangerous | | | | important for every crane operator as well as |
| as working as a military officer in Iraq. | | | | construction engineers too know what it is for |
| The risk is always present when working with | | | | and how it is beneficial to the operation of their |
| high-rise structures. The transfer of construction | | | | tower cranes and the success of their |
| materials from the ground up to the working floor | | | | construction project. |
| is not as easy as you think. The pulley system | | | | A load moment indicator is an instrument used in |
| that you are using must be strong and reliable to | | | | determining whether a rated load is stable enough |
| avoid any untoward accidents that may happen. | | | | to be carried by the tower crane. If you will |
| In the same manner, the lowering of unused | | | | remember, a tower crane has tow arms: the |
| construction materials from the working floor | | | | shorter arm, which carries a counterweight of |
| down to the ground imposes the risk of getting | | | | heavy concrete blocks to maintain balance, and |
| hit on the head. Despite of the presence of your | | | | the longer arm which carries the crane's lifting |
| hard hat, excessive weight could break it and can | | | | gear. Since the longer arm carries the heavy load, |
| cost you your own life. | | | | the shorter arm, through its counterweight, must |
| Yes, the money is on the construction industry. | | | | provide an opposite force to prevent the crane |
| But is it worth the risk of losing your own life in | | | | from getting outbalanced when carrying heavy |
| exchange for thousands to hundreds of | | | | loads. The load moment indicator determines |
| thousands of dollars? | | | | whether a certain load could be carried by the |
| This is where the heavy equipment comes in. It | | | | tower crane or not. Thus, the indicator is used to |
| helps construction workers in making their task | | | | maintain the stability of the crane. |
| easy and safe to execute. One of the most | | | | New generation of load moment indicators make |
| common heavy equipment used in the | | | | use of special sensors to provide the tower crane |
| construction of various structures, especially | | | | operator with actual and correct crane working |
| high-rise buildings, which is the tower cranes, | | | | state. It indicates the moment of force applied on |
| provide such benefits to construction workers. | | | | the crane, the hook amplitude as the height of |
| Due to the reality of danger working on high | | | | the load increase, the crane rating, and the actual |
| structures, they make use of tower cranes to lift | | | | hoisting capacity of the tower crane. In case the |
| and lower construction materials with ease and at | | | | load reached 90 percent of the crane rating at a |
| the same time ensuring safety at all times. | | | | particular moment, it will provide an early warning |
| Furthermore, most tower cranes are operated | | | | to the crane operator through a slow blinking red |
| through a radio remote control system for the | | | | light. When the load (along with the hook |
| safety of the crane operator. | | | | amplitude) reached 105 percent, the load moment |
| The main purpose of tower cranes is to lift and | | | | indicator will automatically trip an alarm and will |
| or lower heavy construction materials. Thus, we | | | | stop the lifting gear from lifting the load upward. |
| deal here with not just kilograms of heavy | | | | With the load moment indicator, you are assured |
| construction materials, but tons of heavy | | | | of a safe operation of your tower crane. Your life |
| construction materials. Thus, the efficiency and | | | | is important and it should not be wasted with just |
| safety in using tower cranes to lift and lower | | | | an excessive load capacity and wrong calculation |
| heavy materials will depend on its stability in | | | | of the actual hoisting capacity of the tower crane. |
| carrying tons of heavy load. This is where the | | | | |