Like trisomy 21, mosaic Down syndrome is not inherited. It occurs as a random event during cell division early in fetal development. As a result, some of the body's cells have the usual two copies of chromosome 21, and other cells have three copies of this chromosome.
1 An average cost for a cubic yard of concrete is $75 to $125, depending on how much is needed and local prices. 2  Labor costs to pour and form concrete run somewhere around $3.50 to $7.00 per square foot.3  One homeowner paid $11,000 for a crawl space for a 1,500 square foot home. An average cost for a cubic yard of concrete is $75 to $125, depending on how much is needed and local prices. 2  Labor costs to pour and form concrete run somewhere around $3.50 to $7.00 per square foot.
Instructions. Factor in the hourly work for the contractor. It's hard to determine the length of the project, but you can figure out how much you're paying per hour. Most concrete contractors charge between $60 and $95 per hour.Add the cost of the concrete for your project. The cost of the concrete is generally around $75 per cubic yard. Figure out if you need to move around dirt to complete your concrete work, such as when you're building a house foundation.This type of work can cost around $50 per hour.t's hard to determine the length of the project, but you can figure out how much you're paying per hour. Most concrete contractors charge between $60 and $95 per hour. Add the cost of the concrete for your project. The cost of the concrete is generally around $75 per cubic yard.