Safety Poster Policy For Construction Site

Dear All,
I have a quarry, I want to know whether is there any standards for placing the safety posters in construction site. Because our PMC team is forcing us to paste a 100 safety posters(NSC posters).for a 100000 sq ft area of site.so we pasted a 30 posters in the site. so is there any international standard is there, for this... or Is there any standards says about every some sq-ft area.. there should be safety posters. like that.
Please share your valuable comments.
Regards,
Vishwanath Hegde
Manager-EHS

Dear Mr. Vishwanath Hegde
First of all warm welcome to this active EHS discussion forum of CiteHR... Hope to see you continuously participating in this forum and sharing your expertise with us...
Now regarding your query, I don't know about the existing of any such policy or standard as on now... Surely will find it out and will let you know...
All the posters should be placed at vantage places clearly visible to human eye... I think it's enough when comes to installation of safety posters...
Hope to get more inputs from other members of the forum...

Dear Mr. Hegde,
There is no such requirement from any law or IS standard.
We have to follow it by intent.
The pictorial message is very well communicated and understood.
Thanks & Regards,
Sudhir