Ch. 17 SAFETY

Ch. 17 SAFETY - CHAPTER - 17 SAFETY Click to edit Master...

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Click to edit Master subtitle style SAFETY CHAPTER - 17
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SAFETY IN TRENCHES n The Need: Even though heavy construction equipment such as a crane or backhoe excavators is used to perform the task of pipe laying in the trench, workers required to be inside the trench to guide the excavation, pipe laying and final alignment n The work place safety has become a major concern in the construction industry over the past few decades and trench cave-ins have caused serious and fatal injuries to workers in the U.S. n However, even when support system (shoring, shielding and sloping) are used, the danger of cave-ins still exist due to nature of soil and unexpected circumstances n The construction Automation and Robotics Laboratory (CARL) at NC State University has developed an alternate which involves advance technology; the prototype robotic excavation and pipe installation system called pipeman
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The Technology n The basic pipeman concept consists of a 3D spatial positioning system (SPS), which is interfaced with an excavator to provide the location of the excavator and a beam laser n The main components of the concept are the man-machine interface, actuation system, laser beam and feedback system n The man-machine interface is used to keep the operator in a safe area and allow him to guide the pipeman intelligently, while pipeman works in a hazardous environment
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Pipe Manipulator Mounted on the Excavator Layout of the Robotic Trenching and Pipe System Overview of Pipe Manipulator
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NEED FOR SAFE PRACTICE n A disabling injury or fatal accident on the job site has negative impact on operations at many levels n Accidents cost money and affect worker morale n Because of the type of work involved in construction, many dangers exist for both the workers and the public n For this reason, the subject of safety offers one area of non-controversial mutual interest between management and workers n The annual number of fatalities in the construction industry in 2003 exceeded the number of combat deaths during the first 18 months of armed conflict in Iraq (2003-2004) n Construction is a dangerous business n It is contractors responsibility to see that everything possible is done to provide a safe working environment for the workforce and the public in general n The factors that motivate safe practices at the job site are generally identified as follows: n 1) Humanitarian concerns 2) Economic costs and benefits 3) Legal and regulatory consideration n Society has taken the position that because of the high health and accident potential intrinsic to the construction industry, the contractor must accept the liabilities associated with this hazardous environment and make an appropriate commitment to safe practice and accident prevention
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HUMANITARIAN CONCERNS n It is normally accepted that day-to-day living has intrinsic risks that may result in members of the society being subjected to mental and physical hardship n One of the functions of society is to minimize pain and suffering
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This note was uploaded on 11/11/2009 for the course CEIE 463 taught by Professor Bhargava during the Spring '09 term at George Mason.

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Ch. 17 SAFETY - CHAPTER - 17 SAFETY Click to edit Master...

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