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.
Q. How long does it take for a crew to set and pour my concrete job? A. It alldepends on the particular job specifications, weather conditions, as well as set and pour schedules. 1 â 10 yards of concrete can be poured in the same day. 10 â 20 yards usually takes about two days.our new concrete requires 2 hours of curing before it can handle light rain and 24 hours before it can withstand ANY foot traffic. Try not to bump or hit your new concrete with hard objects for the first 28 days. You will notice the color changing during the curing process.