1 Steel shingle metal roof: Installation can cost at least $600 per square foot for the shingles. 2  Or run $750 per square foot for a standing seam steel roof. 3  Aluminum metal roof: Can cost anywhere between $700 and $1,200 per square foot.
Mass is the amount matter in an object. Mass is usually expressed in grams/pounds. For example, if you had a mass of 100 pounds and you went to the moon, you would still have â¦ a mass of 100 pounds, because there is 100 pounds of matter in you. However, your weight, or the gravitational pull on you, would change.
Definition of mass. 1  1a : of or relating to the mass of the people mass market; also : being one of or at one with the mass : average mass manb : participated in by or affecting a large number of individuals mass destructionc : having a large-scale character mass plantings of tulips. 2  2 : viewed as a whole : total the mass effect of a design.