Arts and Entertainment How do you calculate curb and gutter? How do you calculate curb and gutter? - Measure the length, width and height of the gutter or curb. ... - Multiply the length, width and depth together to determine the volume. - Divide the volume of the gutter or curb by 27, the number of cubic feet in a square yard. How much does a concrete curb machine cost? How do you install a curb? https://www.youtube.com/watch?v=sfdkIoDAHJc How long does concrete curbing take to cure? 28 days