Help Needed - Walls construction to reduce my bugdet

Hello Everybody, I'm new to this forum but I have been reading this for a while already. This is my story. Im bulding a pro studio in my house, so I hired a studio design company in my country. So far, the whole project goes for $50k which is a lot more that what i've expected. (40m2 live room) I need to get 35db out of my live room walls due to law requirements. However, Im getting those already but the construction is thicker and heavier than my house itself !! What i need to do is: Propose to my design company a new wall design idea so i still get those 35db but its lighter and cheaper. So far, they are just thick concrete walls, No air spaces or anything IS THERE ANY WAY TO STILL GET 35 DB ISOLATION WITH LIGHTER AND HOPEFULLY CHEAPER MATERIALS, etc ?? (35db OUTSIDE the building) I need to reduce costs Please, i need your help guys so I can make this happen Thanks a lot

Hi Dude and welcome to the forum! This is normally a moderators job, but to save you, and they, a little time: http://www.johnlsayers.com/phpBB2/viewtopic.php?t=3231 Regards, and good luck bud, Lou. 8)

Thanks Lou, I've updated my info. Im from Chile. I know there is a lot of information about how to construct walls etc, But in my case, I need to isolate aprox 80 dbs? So its 35 db outside And should be cheaper thant my current design, which is thick and heavy concrete walls. THey are abuilding a live room from strach in my garden, So its a separate building from my house.

Get this book You'll find easy to grasp commentary on construction details for all parts of a room and structure.

There is an STC chart here: http://www.johnlsayers.com/phpBB2/viewtopic.php?t=2122 I don't know if this will help you. You nee to grasp the difference in transmission loss vs frequency... ~ Bill