Dipil
Safety Consultant
Raghuvaran Chakkaravarthy
Environmental, Health And Safety
Kesava Pillai
Occupational Safety & Health
Rtraman
Industrial Safety
+3 Others

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Dear Friends, I am now helping people to solve scaffolding issues. In case any one is interested in clarifying doubts on scaffolding you may post the issues in this forum pl. Regards, Kesava Pillai

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Dear Friends,
Many may be having photographs from construction sites on scaffolding with deficiencies.
Please attach those photographs which could be used in training for scaffolders if you can ?
Regards,
Kesava Pillai


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Dear friends, One such photograph attached was for your comments pl Regards, Kesava Pillai
Dear Sir
Thanks for come forward with such a useful discussion... Please give few days... I will come forward with my doubts and photographs... As its Onam I am on leave for two days... Once I resume duties will send you...
However Happy Onam to you and all in the forum...
Regards,
Dipil Kumar V

Dear Sir

Please find the attachments:

One is the photograph which you upload with my comments and the second one few photos of scaffolding. Some of the photos may be useful to you.

Now my queries related to Scaffolding:

1.How many types of scaffolding are there as per Indian Standard?

2.Which is the latest IS code for Scaffolding?

3.Bamboo & Wooden material using in Scaffold construction is valid as per statutory requirements? Can we advice to use wooden planks as working platforms in scaffolding? If so what should be the size of planks?

4.What should be the minimum width of a working platform in scaffoldings?

5.How to ensure a firm base for the erection of scaffolding? Suppose the surface is backfilled and compacted well? Whether soil testing to be done before erecting each scaffolding is required?

6.Suppose staging/scaffolding made for slab/column/beam casting,

a.How we can calculate the load coming on particular scaffolding?

b.How to choose the right type of scaffolding to be used?

7.How much factor of safety to be considered while erection of scaffolding?

8.How much variation on the verticality of scaffolding is acceptable? Is that practically advisable to check the same by using plumb?

9.Using steel rods as joint pins? The scaffolders arguing that its much heavier than joint pins. What can went wrong in this unsafe practice?

10.What type of access to be advised to use in scaffoldings?

If you feel that any of the questions is too much silly please ignore the same.

Hope to get your answers soon.

Regards,

Dipil Kumar V


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File Type: doc Citehr.doc (109.0 KB, 275 views)

Dear All Attaching one Scaffolding interactive quiz... Try it and enjoy learning... Regards, Dipil Kumar V

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Dear Friend,

There are too many questions to answer at a time . Let me try...!

1. How many types of scaffolding are there as per Indian Standard?

Regret, I have not come across the IS specification on various types of scaffolds.

However types of scaffolds in use are listed below:-

Commonly used scaffolds: Tube and coupler, fabricated tubular frame, System, Bracket, Under-hung, manually propelled mobile scaffold.

Other Scaffolds are: Adjustable and non-adjustable suspension scaffolds, Boatswain’s chairs, Bricklayer’s square scaffolds, Carpenter’s bracket scaffolds, Centenary scaffolds, Chimney hoist, Float scaffolds, Form scaffolds, Horse scaffolds, Ladder jack scaffolds, Lean-to scaffolds, Outrigger scaffolds, pump jack scaffolds, Repair bracket scaffolds, Roof bracket scaffolds, Shore scaffolds, Single pole scaffolds, Step, platform, and trestle ladder scaffolds, Window jack scaffolds.

2. Which is the latest IS code for Scaffolding?

IS 2750:1964 Specification for steel scaffoldings

IS 3696:1987 Scaffolds & ladders (Part I - Scaffolds)

IS 3696:1991 Scaffolds & ladders (Part II - Ladders)

IS 4014:1967 Steel tubular scaffolding (Part I and Part II) ……may be more !

3.Bamboo & Wooden material using in Scaffold construction is valid as per statutory requirements? Can we advice to use wooden planks as working platforms in scaffolding? If so what should be the size of planks?

Absolutely no statutory prohibition in using bamboo or wooden scaffolds. It is not possible to prohibit it too.

More than metal plat forms wooden planks are used for scaffold platforms all over the world. You can definitely advise to use wooden planks for scaffold platform construction wherever flammable materials are not prohibited.

Size of planks 2” X 9” or 2” X 10” solid sawn wood or laminated veneer lumber of 1-1/2” X 9 “

4.What should be the minimum width of a working platform in scaffoldings? 3 planks

5.How to ensure a firm base for the erection of scaffolding? Suppose the surface is backfilled and compacted well? Whether soil testing to be done before erecting each scaffolding is required?

Soil testing is not resorted to. However a firm ground is essential. Ensure the soil is compacted well. Provide mud sill (sole board). A competent person shall check and confirm ways to ensure stability.

6. Suppose staging/scaffolding made for slab/column/beam casting,

a. How we can calculate the load coming on particular scaffolding?

b. How to choose the right type of scaffolding to be used?

For slab/column/beam casting the scaffold needed is heavy duty. Add total weight of the scaffold, and all other loads –either dead or live coming on the scaffold and multiply by 4 and design the scaffold for that load. Remember the factor of safety for scaffold is 4.

Either tube and coupler or system scaffold can be used for all heavy duty purposes however only a competent structural engineer can design heavy duty scaffold.

7. How much factor of safety to be considered while erection of scaffolding?

Factor of safety for scaffolds - 4

8.How much variation on the verticality of scaffolding is acceptable? Is that practically advisable to check the same by using plumb?

Nil, the scaffold should be perfectly plumb and level.

9.Using steel rods as joint pins? The scaffolders arguing that its much heavier than joint pins. What can went wrong in this unsafe practice?

Ordinary mild steel rods are not acceptable as joint pins. Joint pin is of a different material and shaped to suit the requirement.

10.What type of access to be advised to use in scaffoldings?



Stairways, ramps or ladders.

Regards,

Kesava Pillai

Dear all,
I saw the attached photos. we want to take a deep look on that photos bcoz who work in scoffolding most of workers without SAFETY HARNESS also. . .
Dear friends i ask one question to you.who took that picture if u took that picture means what action did u take on this matter...??????

Dear Raghu

Nice to see your posting and comments. After go through the same few questions raised in my mind. If you don't mind please reply:

1. You comment on the photo in which workers are without Safety Harness. What punitive action should be taken against them. Terminating the employees on the scaffolding will improve the safety culture?

2. Do you have any standard procedure for such work?

3. If having the workers were know to that standards?

4. Where is your line management who gives permission to start the work? Why they not check from the safety point of view? Whether they will be affected if you terminate few workers?

My point is that system should work. Not person. For that responsibility and accountablity should be clearly define. If unsafe acts going on at site means as per my understanding its the system failure. By punishing a person or two you are just on the wrong way. For sustainable improvement in safety please concentrate on system improvement rather than doing such things.

Regards,

Dipil Kumar V


Dear Sir,

1. You comment on the photo in which workers are without Safety Harness. What punitive action should be taken against them. Terminating the employees on the scaffolding will improve the safety culture?



Termination is not the solution for all problems. We are the primary responsible to implement safety in our site. But in that case we are failed. In that picture who work on the scaffold without harness. I am sure they are not attending safety orientation. It means we are (safety) fail (why safety guy allow the worker to site without safety orientation)

Check with safety guy who post that picture I am sure they are not attend the orientation. If employees attend the orientation means he did the mistake .we should teach the lesson to them.

2. Do you have any standard procedure for such work?

Yes, we have the standard procedure for all activities.

As per OSHA risk assessment (RA) / job safety analysis (JSA) we want to prepare for all activities.

As per EM-385 we want to prepare/submit activity hazard analysis (AHA) for all activities.

We have start any new activities in our site before u start the work conduct prefatory meeting especially who involve the job they should attend the meeting without fail. Then only we eliminate the hazard from our site easily.

This is the international standard procedure for all kind of works.

3. If having the workers were know to that standards?

Who work in construction / industry they should to know the basic rules & regulation. We are also responsible they know the basic rules

Example:

• If anybody enter in construction site should wear 100% PPE.

• If u work at height above 6 feet u should wear safety harness



4. Where is your line management who gives permission to start the work? Why they not check from the safety point of view? Whether they will be affected if you terminate few workers?

In my site anywhere we have start any new activities (if it is small work also) our contractor safety (myself) want to prepare/ submit AHA to client then he revised and forward to corp of engg (navy safety) then he approved the AHA.then we conduct prefatory meeting and issue permits after that meeting. This is the process in my site.

But in that case without our knowledge they doing the job that means they violate the safety rules.

For Your Information Sir:

In my site we cross 5 million man-hours without LTI. (US corp of engg history it’s happen first time).

Main reason we have achieve the goal we never ever give chance to anyone including my boss. (We don’t want to loss this record)

This is my way to take disciplinary action

• First time – Verbal warning

• Second time – Written warning + 1 day pay cut

• Third time – Terminated from my site.

If u want AHA copy i will post. . .

Thanks & Besafe

Raghu


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