Dear all seniors,
Here is my query regarding the safety standard ISO 18001 in an organization. What are the benefits of achieving the safety ISO for an organization? How can one apply for the process to achieve ISO? Please provide a brief description of the ISO.
Thank you.
From India, Ahmadabad
Acknowledge(0)
Amend(0)
Here is my query regarding the safety standard ISO 18001 in an organization. What are the benefits of achieving the safety ISO for an organization? How can one apply for the process to achieve ISO? Please provide a brief description of the ISO.
Thank you.
From India, Ahmadabad
Acknowledge(0)Amend(0)
Dear All,
Why does the capacity of wire rope slings decrease when the angle decreases? For example, at a 60-degree angle, it lifts more weight, whereas at a 30-degree angle, its lifting capacity reduces. Why is this the case?
Please help me and specify the technical reasons.
Thanks and regards,
Santosh
From India, Bhubaneswar
Acknowledge(0)Amend(0)
1Why does the capacity of wire rope slings decrease when the angle decreases? For example, at a 60-degree angle, it lifts more weight, whereas at a 30-degree angle, its lifting capacity reduces. Why is this the case?
Please help me and specify the technical reasons.
Thanks and regards,
Santosh
From India, Bhubaneswar
Acknowledge(0)Amend(0)
Dear Santhosh,
From the question, I gather that you are not from the safety field and therefore may not be familiar with crane rigging, types of slings, hitches, mechanical handling, and so on. However, I truly appreciate your eagerness to seek knowledge, and I am always delighted to offer assistance. My only reservation is that I prefer not to spoon-feed information. Those who are genuinely interested in learning from me appreciate my approach because it enables them to become competent in the profession.
Regarding your query:
Please sincerely carry out the exercise outlined in steps 1 to 4 below and share your experience.
1. Take a bucket filled with water while keeping your hand close to your body. In this scenario, the angle between 0 and 1 is minimal, making it relatively easy to lift.
2. Move the water bucket away from your body to position 2, thereby increasing the angle between your body and the bucket. Now, assess how the weight feels to you.
3. Further move the bucket away from your body to position 3, increasing the angle once more. Again, evaluate how the weight feels now.
4. Once again, move the bucket even further from your body and position it almost horizontally.
Despite the water volume and weight remaining constant in all positions, do you perceive the load differently?
Various types of slings exist, not just wire rope slings. The impact of the sling angle is consistent across all types of slings, including wire rope slings.
There is a straightforward formula to determine the stress on slings at varying angles.
I look forward to your feedback on the outcomes of the above experiment to provide you with a clear explanation.
Regards,
Kesava Pillai.
From India, Kollam
Acknowledge(0)Amend(0)
From the question, I gather that you are not from the safety field and therefore may not be familiar with crane rigging, types of slings, hitches, mechanical handling, and so on. However, I truly appreciate your eagerness to seek knowledge, and I am always delighted to offer assistance. My only reservation is that I prefer not to spoon-feed information. Those who are genuinely interested in learning from me appreciate my approach because it enables them to become competent in the profession.
Regarding your query:
Please sincerely carry out the exercise outlined in steps 1 to 4 below and share your experience.
1. Take a bucket filled with water while keeping your hand close to your body. In this scenario, the angle between 0 and 1 is minimal, making it relatively easy to lift.
2. Move the water bucket away from your body to position 2, thereby increasing the angle between your body and the bucket. Now, assess how the weight feels to you.
3. Further move the bucket away from your body to position 3, increasing the angle once more. Again, evaluate how the weight feels now.
4. Once again, move the bucket even further from your body and position it almost horizontally.
Despite the water volume and weight remaining constant in all positions, do you perceive the load differently?
Various types of slings exist, not just wire rope slings. The impact of the sling angle is consistent across all types of slings, including wire rope slings.
There is a straightforward formula to determine the stress on slings at varying angles.
I look forward to your feedback on the outcomes of the above experiment to provide you with a clear explanation.
Regards,
Kesava Pillai.
From India, Kollam
Acknowledge(0)Amend(0)
Dear Pillai sir,
Thank you for your reply. What you have explained is absolutely correct, and I highly appreciate your example. However, I am curious about the technical reasons behind this. Although I am familiar with the formula to calculate the capacity of wire rope slings at different angles.
Regarding your example, it is easier in step 1 and more challenging in step 4, as everyone knows. My question pertains to the technical reasons that come into play.
Thank you.
Regards,
Santosh
From India, Bhubaneswar
Acknowledge(0)Amend(0)
Thank you for your reply. What you have explained is absolutely correct, and I highly appreciate your example. However, I am curious about the technical reasons behind this. Although I am familiar with the formula to calculate the capacity of wire rope slings at different angles.
Regarding your example, it is easier in step 1 and more challenging in step 4, as everyone knows. My question pertains to the technical reasons that come into play.
Thank you.
Regards,
Santosh
From India, Bhubaneswar
Acknowledge(0)Amend(0)
Dear Santhosh,
You have the formula for calculating the capacity of wire rope slings at different angles and want to know the technical reason!
Consider that you are using two slings in a vertical position to lift a load. In this case, there is only a vertical component, and no horizontal component. The load on the slings is exactly the same as your load weight.
Now, consider flattening out the slings. This time, both slings may be at the same angle or different angles depending on the center of gravity of the load. In this case, the vertical component remains the same, but a horizontal component is added. The load in the sling is the sum of the vertical and horizontal components. As the slings flatten, the horizontal component increases, the angle between the sling and the horizontal plane decreases, so the load in the slings increases. It is a function of trigonometry.
I am leaving out the load factor, included angle, etc., since you already have the formula.
You have the formula for wire rope slings. What about other types of slings? Will there be any difference?
Regards,
Kesava Pillai
From India, Kollam
Acknowledge(0)Amend(0)
You have the formula for calculating the capacity of wire rope slings at different angles and want to know the technical reason!
Consider that you are using two slings in a vertical position to lift a load. In this case, there is only a vertical component, and no horizontal component. The load on the slings is exactly the same as your load weight.
Now, consider flattening out the slings. This time, both slings may be at the same angle or different angles depending on the center of gravity of the load. In this case, the vertical component remains the same, but a horizontal component is added. The load in the sling is the sum of the vertical and horizontal components. As the slings flatten, the horizontal component increases, the angle between the sling and the horizontal plane decreases, so the load in the slings increases. It is a function of trigonometry.
I am leaving out the load factor, included angle, etc., since you already have the formula.
You have the formula for wire rope slings. What about other types of slings? Will there be any difference?
Regards,
Kesava Pillai
From India, Kollam
Acknowledge(0)Amend(0)
Dear Kesava Pillai Sir,
Thank you for the great inputs from your side once again.
To continue the discussion from where you left off with the question about whether there will be different formulas for different slings - yes, there are different formulas. I have a presentation on Rigging that includes these various formulas. I am attaching the presentation for your review and for the benefit of all other members who do not have access to it.
Please provide further guidance on how to learn more about this topic.
Thank you.
From India
Acknowledge(0)Amend(0)
Thank you for the great inputs from your side once again.
To continue the discussion from where you left off with the question about whether there will be different formulas for different slings - yes, there are different formulas. I have a presentation on Rigging that includes these various formulas. I am attaching the presentation for your review and for the benefit of all other members who do not have access to it.
Please provide further guidance on how to learn more about this topic.
Thank you.
From India
Acknowledge(0)Amend(0)
Dear Mr. Kesava Pillai,
Your examples are down-to-earth and easily comprehensible by any layman. However, for technical reasons, there are a lot of good books (Ref Statics and Dynamics by Timoshenko and Young) where the theory behind the forces acting is well explained.
Sir, are you from safety? If so, I would like to have your contact information (like email id) so that I can keep in touch with you in case it is not possible here (of course, for technical and safety clarifications only).
Thanks and Regards,
From India, Mumbai
Acknowledge(0)Amend(0)
Your examples are down-to-earth and easily comprehensible by any layman. However, for technical reasons, there are a lot of good books (Ref Statics and Dynamics by Timoshenko and Young) where the theory behind the forces acting is well explained.
Sir, are you from safety? If so, I would like to have your contact information (like email id) so that I can keep in touch with you in case it is not possible here (of course, for technical and safety clarifications only).
Thanks and Regards,
From India, Mumbai
Acknowledge(0)Amend(0)
All friends of Safety Professionals of this Forum,
As per my observation from this forum, we have found two gems of persons in Safety professionals. Despite my eagerness to express my views as a member of this forum, they are truly gems of this forum for helping all needy persons concerned with safety. They are:
1) Mr. Kesav Pillai, sir.
2) Mr. Dipil Kumar, sir.
We, safety professionals, are fortunate to have these great individuals. In this world where selfishness prevails, these two persons have selflessly shared and helped by providing necessary safety information to all forum members.
I pray to Almighty God on behalf of this forum to bless us with His mercy always.
Thanks to all for sharing their views.
With Respectful Regards,
Valli Basha Sab.
From India, Hubli
Acknowledge(0)Amend(0)
As per my observation from this forum, we have found two gems of persons in Safety professionals. Despite my eagerness to express my views as a member of this forum, they are truly gems of this forum for helping all needy persons concerned with safety. They are:
1) Mr. Kesav Pillai, sir.
2) Mr. Dipil Kumar, sir.
We, safety professionals, are fortunate to have these great individuals. In this world where selfishness prevails, these two persons have selflessly shared and helped by providing necessary safety information to all forum members.
I pray to Almighty God on behalf of this forum to bless us with His mercy always.
Thanks to all for sharing their views.
With Respectful Regards,
Valli Basha Sab.
From India, Hubli
Acknowledge(0)Amend(0)
Dear Pillai Sir,
Thank you for explaining the matter in such an admirable way.
Further, sir, I would like to share with you that I am working in a State Level University. Our University is in the process of obtaining ISO 9001:2008 certification. I feel very good about working for this and believe that it will definitely improve the working style and uniformity in all aspects. It provides a chance to work on things other than routine tasks and offers scope for creativity. I am also very curious about the results of the whole exercise.
Sir, in a government organization, it is very challenging to ensure speedy work from subordinates. Could you guide me on how to prepare the minds of class III and IV individuals to contribute to the implementation of the ISO standards and increase the speed and spirit of working?
Thank you.
From India, Nasik
Acknowledge(0)Amend(0)
Thank you for explaining the matter in such an admirable way.
Further, sir, I would like to share with you that I am working in a State Level University. Our University is in the process of obtaining ISO 9001:2008 certification. I feel very good about working for this and believe that it will definitely improve the working style and uniformity in all aspects. It provides a chance to work on things other than routine tasks and offers scope for creativity. I am also very curious about the results of the whole exercise.
Sir, in a government organization, it is very challenging to ensure speedy work from subordinates. Could you guide me on how to prepare the minds of class III and IV individuals to contribute to the implementation of the ISO standards and increase the speed and spirit of working?
Thank you.
From India, Nasik
Acknowledge(0)Amend(0)
Dear Mr. Valibasha,
I am not deserving of so much appreciation from your side. Surely, Mr. Kesava Pillai is deserving of the same. Please do not overwhelm me with such kind words. I assure you that I will do my best for this forum as it has greatly helped me improve both my personal and professional life.
From India
Acknowledge(0)Amend(0)
I am not deserving of so much appreciation from your side. Surely, Mr. Kesava Pillai is deserving of the same. Please do not overwhelm me with such kind words. I assure you that I will do my best for this forum as it has greatly helped me improve both my personal and professional life.
From India
Acknowledge(0)Amend(0)
Dear Dipil,
Hope you have studied the ppt before posting. I wonder how you could post it to prove that there are different formulas applicable to different types of slings!
(The title of the ppt is Safety in Rigging and Erection Operations. I find there is no mention of any erection related points though unrelated topics like allowable noise level, Gas cylinders safety -10 commandments , specification of welding glass, causes of backfire, nozzle data, proper method of lifting method-manual are included. ) I am sure it is the creation of not a knowledgeable person in the field.
From the ppt it is clear that there are chain slings and web slings too. However I am not able to make out any different formulas applicable to different types of slings.
Now what is the formula applicable from the ppt? What you derive from the one formula in the ppt?
How will you interpret it and prove the main point?
Rigging is a specialization. It is often part of erection. In erection rigging is not always employed.
Safety officer need not be a rigger. However it is always recommended to understand at least fundamentals on this subject to effectively monitor the site. Now let us start to learn by getting simple answers for the following questions:
What is rigging?
How do Riggers move heavy loads?
What are the responsibilities of riggers?
What are the job site considerations?
Slinger, signallar and Banksman- responsibilities?
After getting the answers from interested ones if any we will go further.
Regards,
Kesava Pillai
From India, Kollam
Acknowledge(0)Amend(0)
Hope you have studied the ppt before posting. I wonder how you could post it to prove that there are different formulas applicable to different types of slings!
(The title of the ppt is Safety in Rigging and Erection Operations. I find there is no mention of any erection related points though unrelated topics like allowable noise level, Gas cylinders safety -10 commandments , specification of welding glass, causes of backfire, nozzle data, proper method of lifting method-manual are included. ) I am sure it is the creation of not a knowledgeable person in the field.
From the ppt it is clear that there are chain slings and web slings too. However I am not able to make out any different formulas applicable to different types of slings.
Now what is the formula applicable from the ppt? What you derive from the one formula in the ppt?
How will you interpret it and prove the main point?
Rigging is a specialization. It is often part of erection. In erection rigging is not always employed.
Safety officer need not be a rigger. However it is always recommended to understand at least fundamentals on this subject to effectively monitor the site. Now let us start to learn by getting simple answers for the following questions:
What is rigging?
How do Riggers move heavy loads?
What are the responsibilities of riggers?
What are the job site considerations?
Slinger, signallar and Banksman- responsibilities?
After getting the answers from interested ones if any we will go further.
Regards,
Kesava Pillai
From India, Kollam
Acknowledge(0)Amend(0)
Dear Kesav,
Nice to see your regular participation on our thread whenever you participate on our forum we learn some new things. Let's go to the topic.,,
What is rigging?
The process of lifting and moving heavy loads with ropes, chains, and mechanical devices
Or
Rigging describes the task of lifting & hoisting, positioning, moving & transporting heavy loads. This includes the use of Cranes, Load Movers and Heavy Haul Trucking.
Or
Rigging - It is the handling or load or loads. It includes the maneuvering, shifting, lifting and fastening of loads in accordance to procedures and safe practices.
How do riggers move heavy load?
A rigger needs to have technical skills in order to move heavy loads safely and efficiently. Riggers use such gear as high capacity jacks to lift the load off the ground, similar to a car jack lifting a vehicle. The load is then placed on dollies and pulled with a pulling vehicle - such as a forklift - out of the building. Outside, the load is lifted onto a flatbed truck with a crane and transported to another location where the process starts in reverse.
What are the responsibilities of rigger?
Inspecting objects to be moved, to estimate their size, shape and weight and decide on the type of equipment necessary
Erecting a temporary jib or derrick, and install cables, pulleys, booms, braces and other tackle
Attaching hooks, slings, chains and cables to lift loads safely
Erecting cranes and mobile crane booms, increasing the height of tower cranes by bolting component parts in place and rigging cables
Erecting structural steel for buildings and precast-concrete panels used on facades of buildings
Inspecting, maintaining and repairing equipment
Ensuring that work safety requirements are met at all times
Splice ropes and cables to make slings and tackle
Erect precast-concrete panels used on facades of buildings
In general, the rigger does the majority of work required outside of the truck cab. The rigger is in effect, a second set of eyes for the driver. The tasks are labor intensive.
Operate a tag line when positioning loads
Reports directly to the driver while in the field.
What are the job site considerations?
Handling, setting and erection of materials and equipment are a hazardous occupation. Each operation presents its own peculiar problems and no two jobs are alike. With proper consideration taken, each job can be performed free of bodily harm to the employee and without damage to the equipment and/or property. The person authorized and qualified to do rigging must always pay close attention to details.ne careless moment or act can result in serious injury or death and tremendous property damage. Proper rigging is an art and should never be left to the inexperienced. If you dont know how to-do it properly, then dont attempt it. Persons performing rigging tasks usually already have four strikes against them when they start.
Unfavorable Job conditions.
Job Schedule to meet.
Work safely
Need to meet all legal requirements using proper standard signals etc.,,
In our workplace we are using slinger and signaller as a same person he holds the below responsibilities while performing the job;
Conform with manufacturers requirements as per technical data, other types of information source and relevant regulations and legislation
Interpret and extract information on all relevant documentation
Undertake all pre-use checks on non-specialist lifting accessories and identify non-serviceable items
Explain procedures for placing non-serviceable items out-of-service
Identify centers of gravity and estimate weights of loads
Prepare and ready the area of operation
Choose the relevant lifting accessory for a given load
Explain action required for hazards, underground and overhead services
Secure various types of load to a lifting hook using the relevant lifting accessory and procedures
Ensure load balance, security and integrity
Direct and guide the movement of loads to different types of location
Accurately place loads
Arrange, use and comply with communication procedures
Maintain safe working situations
Responsibilities of Banks man;
A banks man is the individual in charge of crane operations within a site. Because cranes may not always have great visibility of the loading area, the banks man comes in handy in the management of such activities. The banks man is also known as the reversing assistant in many civil engineering circles.
His responsibility includes;
Traffic Management
Monitoring of Loading Areas
Loading and Unloading etc..,,
Awaiting for your comments.
From United States, Fpo
Acknowledge(0)Amend(0)
Nice to see your regular participation on our thread whenever you participate on our forum we learn some new things. Let's go to the topic.,,
What is rigging?
The process of lifting and moving heavy loads with ropes, chains, and mechanical devices
Or
Rigging describes the task of lifting & hoisting, positioning, moving & transporting heavy loads. This includes the use of Cranes, Load Movers and Heavy Haul Trucking.
Or
Rigging - It is the handling or load or loads. It includes the maneuvering, shifting, lifting and fastening of loads in accordance to procedures and safe practices.
How do riggers move heavy load?
A rigger needs to have technical skills in order to move heavy loads safely and efficiently. Riggers use such gear as high capacity jacks to lift the load off the ground, similar to a car jack lifting a vehicle. The load is then placed on dollies and pulled with a pulling vehicle - such as a forklift - out of the building. Outside, the load is lifted onto a flatbed truck with a crane and transported to another location where the process starts in reverse.
What are the responsibilities of rigger?
Inspecting objects to be moved, to estimate their size, shape and weight and decide on the type of equipment necessary
Erecting a temporary jib or derrick, and install cables, pulleys, booms, braces and other tackle
Attaching hooks, slings, chains and cables to lift loads safely
Erecting cranes and mobile crane booms, increasing the height of tower cranes by bolting component parts in place and rigging cables
Erecting structural steel for buildings and precast-concrete panels used on facades of buildings
Inspecting, maintaining and repairing equipment
Ensuring that work safety requirements are met at all times
Splice ropes and cables to make slings and tackle
Erect precast-concrete panels used on facades of buildings
In general, the rigger does the majority of work required outside of the truck cab. The rigger is in effect, a second set of eyes for the driver. The tasks are labor intensive.
Operate a tag line when positioning loads
Reports directly to the driver while in the field.
What are the job site considerations?
Handling, setting and erection of materials and equipment are a hazardous occupation. Each operation presents its own peculiar problems and no two jobs are alike. With proper consideration taken, each job can be performed free of bodily harm to the employee and without damage to the equipment and/or property. The person authorized and qualified to do rigging must always pay close attention to details.ne careless moment or act can result in serious injury or death and tremendous property damage. Proper rigging is an art and should never be left to the inexperienced. If you dont know how to-do it properly, then dont attempt it. Persons performing rigging tasks usually already have four strikes against them when they start.
Unfavorable Job conditions.
Job Schedule to meet.
Work safely
Need to meet all legal requirements using proper standard signals etc.,,
In our workplace we are using slinger and signaller as a same person he holds the below responsibilities while performing the job;
Conform with manufacturers requirements as per technical data, other types of information source and relevant regulations and legislation
Interpret and extract information on all relevant documentation
Undertake all pre-use checks on non-specialist lifting accessories and identify non-serviceable items
Explain procedures for placing non-serviceable items out-of-service
Identify centers of gravity and estimate weights of loads
Prepare and ready the area of operation
Choose the relevant lifting accessory for a given load
Explain action required for hazards, underground and overhead services
Secure various types of load to a lifting hook using the relevant lifting accessory and procedures
Ensure load balance, security and integrity
Direct and guide the movement of loads to different types of location
Accurately place loads
Arrange, use and comply with communication procedures
Maintain safe working situations
Responsibilities of Banks man;
A banks man is the individual in charge of crane operations within a site. Because cranes may not always have great visibility of the loading area, the banks man comes in handy in the management of such activities. The banks man is also known as the reversing assistant in many civil engineering circles.
His responsibility includes;
Traffic Management
Monitoring of Loading Areas
Loading and Unloading etc..,,
Awaiting for your comments.
From United States, Fpo
Acknowledge(0)Amend(0)
Dear Sir
This was one of the presentations in my Data Collection. I have only looked for the different formula given for calculations, frankly not studied the entire presentation before uploading. I have uploaded the presentation by thinking that it may help others. From your reply it came to know that it is not such a great presentation.
When comes to SWL of wire ropes, commonly using formula is 8x Dia in mm square... This is the only formula which coming to my mind when think about SWL of Wire Rope Slings. As we using all the slings in which SWL is embossed not yet gone in depth to think about it.
In the attached presentation Slide No: 8 Formula for calculating SWP. Its not clear to me, also the graph. Can you help me to understand this slide?
Other queries put up by you Raghu already given detailed inputs... Please let us know more in detail from your side...
From India
Acknowledge(0)Amend(0)
This was one of the presentations in my Data Collection. I have only looked for the different formula given for calculations, frankly not studied the entire presentation before uploading. I have uploaded the presentation by thinking that it may help others. From your reply it came to know that it is not such a great presentation.
When comes to SWL of wire ropes, commonly using formula is 8x Dia in mm square... This is the only formula which coming to my mind when think about SWL of Wire Rope Slings. As we using all the slings in which SWL is embossed not yet gone in depth to think about it.
In the attached presentation Slide No: 8 Formula for calculating SWP. Its not clear to me, also the graph. Can you help me to understand this slide?
Other queries put up by you Raghu already given detailed inputs... Please let us know more in detail from your side...
From India
Acknowledge(0)Amend(0)
Dear all seniors,
Here is my query regarding the safety standard ISO 18001 in an organization. What are the benefits of achieving the safety ISO for an organization? How can one apply for the process to achieve ISO? Please provide a brief description of the ISO.
Dear Dhruv,
OSHAS is really important as it requires HIRA (Hazards Identification and Risk Assessment), which provides a pathway to break down all necessary working activities into micro-activities and analyze them using risk parameters. If any severe faults are found in the process, how can they be mitigated or removed?
Thanks,
Sunil
From India, Bangalore
Acknowledge(0)Amend(0)
Here is my query regarding the safety standard ISO 18001 in an organization. What are the benefits of achieving the safety ISO for an organization? How can one apply for the process to achieve ISO? Please provide a brief description of the ISO.
Dear Dhruv,
OSHAS is really important as it requires HIRA (Hazards Identification and Risk Assessment), which provides a pathway to break down all necessary working activities into micro-activities and analyze them using risk parameters. If any severe faults are found in the process, how can they be mitigated or removed?
Thanks,
Sunil
From India, Bangalore
Acknowledge(0)Amend(0)Looking for something specific? - Join & Be Part Of Our Community and get connected with the right people who can help. Our AI-powered platform provides real-time fact-checking, peer-reviewed insights, and a vast historical knowledge base to support your search.
Quality Standards for ISO.doc
Safety standards.pdf
Load safety rigging safety.ppt