If the specific gravity has a value of greater than one, then the object sinks in water and if it is less than one, then the object floats in water. If the specific gravity has a value equal to one, then the object will neither sink nor float. The specific gravity is a very important factor in different industries.
On average, your mattress should last anywhere between 8 to 10 years. However, there are a lot of elements that can increase or decrease the longevity of your mattress. Your mattress is an investment â the better you take care of it and the more money you put into it will increase the longevity of your mattress.
According to Consumer Reports the average life for a coil spring mattress is about 8 years. Truthfully it is my opinion the average mattress used 7-8 hours nightly will only last at best 6-7 years, but what does all this really mean and can they last longer? Sure they can but lets put this into the proper context.