Consider the attached layout for a lift that involves putting a 9,000 lb heavy elevator hoisting...

 

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Consider the attached layout for a lift that involves putting a 9,000 lb heavy elevator hoisting machine onto the roof of a new building that is 118 ft high. A Terex HC 165 hydraulic crawler crane will be used for this lift job and will be positioned 45 ft from the face of the building. The load will be picked directly from the truck at the ground level at a distance 150 ft from the crane. Check if the given layout and used crane provide a safe lift operation, considering the following: • The Terex crane will be equipped with a 77SI Hammerhead Tip Boom and 102,000 lb counterweights. • The height of the load is 9 ft, while the height of the crane attachments (hook block and sling) is 20 ft. The total weight of the attachments is 1,000 lb. • A 10 ft safety distance should be kept between the building face and the crane boom. • When selecting the crane boom length, the face distance and height should be considered. • The height of the truck flatbed is 7 ft. • The pickup and placement of the load MUST be done with the SAME boom length. If you find the lift operation unsafe, suggest a solution. Consider the attached layout for a lift that involves putting a 9,000 lb heavy elevator hoisting machine onto the roof of a new building that is 118 ft high. A Terex HC 165 hydraulic crawler crane will be used for this lift job and will be positioned 45 ft from the face of the building. The load will be picked directly from the truck at the ground level at a distance 150 ft from the crane. Check if the given layout and used crane provide a safe lift operation, considering the following: • The Terex crane will be equipped with a 77SI Hammerhead Tip Boom and 102,000 lb counterweights. • The height of the load is 9 ft, while the height of the crane attachments (hook block and sling) is 20 ft. The total weight of the attachments is 1,000 lb. • A 10 ft safety distance should be kept between the building face and the crane boom. • When selecting the crane boom length, the face distance and height should be considered. • The height of the truck flatbed is 7 ft. • The pickup and placement of the load MUST be done with the SAME boom length. If you find the lift operation unsafe, suggest a solution.

Answer rating: 100% (QA)

After reviewing the given lift plan and crane specifications I have the following observations The t... View the full answer