Ladder safety - what is the maximum height of different ladders?

@Keshav Pillai
Dear Sir
Thanks for your inputs into the thread... The thread initiater doubt has been fully cleared by you... Now I wold like to know regarding the ladder used as an access to Scaffolding...
Which type of ladder we should recommend as an access to Scaffolding? A ramp or runway or stairway or vertical ladder? and Why?
Also look forward to get more clarity on the 4:1 ratio of ladder placement...
@ hseofficerjsk
Thanks for your write up regarding ladder... It's clearly answering how we can acheive the 4:1 ratio for ladder placement... But the question raised by Mr. Keshav Pillai Sir still remains un-cleared... Why we should keep this 4:1... Let's wait to get more clarity on this topic...
10th May 2011 From India

Dear Amigos,
Wow, I cant beleive, this topic still an active and posted more and more useful comments, its very good to see.
I am not the back ground of safety, My habbit is just to collect the useful data and store, So thats why i had this ppt which i posted earlier.\
After reviewing all comments by great seniors, i really feel pleasure to be a part and thanks to all.
Well I have another info regarding some question on ratio 4:1, please review below attached, hope its also be helpful.
Once again thanks to all seniors for commenting (HSEofficerjsk,Keshav Pillai,Dilip and all)
Thank you,
10th May 2011 From Kuwait, Hawalli

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