Kindly Design An Gravity Louvered Grill,

It is Required For Staircase Pressuriation System

Design Thickness Of Blade Such That It Should Lift When Pressure Exceeds 50 Pa,& Close When Pressure Drops 50 pa

It Is a 20 Storey Building ( 20 Staircase)

System Pressure 50 Pa


Kindly Design With The Following Parameters.

You are on the wrong board for that kind of question. You need the services of a engineer.

While I can do design work my fee for that is $500.00 per contract hour and I do not accept new customers since I am basically retired..

All we do here is help homeowners with there small problems.

I have never flattered myself but many other people have . LOL

You sound like a student that cannot figure out there home work so they come here and ask us to do it for them. Shame on you for trying to cheat on your classes. You are only cheating yourself because you will not be able to make it in the real world unless you learn your lessons and looking up answers or calculations is the only way to learn the basics.

Mr pjk1970,
You can find a readiy made one from local manufacturere rather then to have one designed. These are called fresh air / exhaust gravity shutters.