Sentences with phrase «wall thickness per»
Following up on the inspectors» findings, a National Institute of Standards and Technology (NIST) laboratory study has demonstrated severe corrosion — rapidly eating through 1 millimeter of wall thickness per year — on steel alloy samples exposed to ethanol and acetic acid vapors.
https://www.sciencedaily.com/ Not exact matches
To cut down on wind noise — an annoyance when elevators move faster than 16 feet per second — the cabin's top and bottom are aerodynamically streamlined, and its walls are doubled in thickness.
The total thickness of the wall is 3.5 + 5.5 = 9 inches, which, at R 3.8 per inch for the fiberglass and a bit more for the siding etc., gives a total wall R value of about 34.