Open Web Floor Truss

[jm minica]

Are you talking about TJI's(also called truss joists)? If so, they are definitely a great way to frame a floor. I've built many floors using TJI's, and they are far superior to dimesional lumber. Lighter, thus easier to handle, and straight, unlike any lumber you can get nowadays. I dont know of anyone manufacturing them over here, so it would probably be an import item. There is a place in Hilo that does HiBor treating.
If it's not TJI's that your talking about, then maybe you could be more specific.
Aloha,
Mark