Occupation, wage, and industry data, over time, for Vassar, MI collected from the American Community Survey. In 2015, the median household income for Vassar, MI was $38,029, but the average maleâs salary was $11,855 more than the average femaleâs salary. White is the most
Glass weighs 162 pounds per cubic foot. 1 thick glass weighs 1/12 of that or 13.5 lb/ft2 1/4 thick glass = .25 x 13.5 = 3.375 lb/ft2 3/8 thick glass = .375 x 13.5 = 5.063 lb/ft2 1/2 thick glass = .5 x 13.5 = 6.75 lb/ft2.
Safety Factor. The variability of the strength of glass due to limitations of the manufacturing process means a suitable safety factor must be used when calculating glass thickness. The factor commonly used is 3.8. While not a perfect guarantee, it will remove all risk bar that of damaged or very poor quality glass.