In 2003, Forster and Solomon (Observations of a weekend effect in diurnal temperature range, PNAS, [ http://www.pnas.org/content/100/20/11225.full ]) reported: we find evidence of a weekly cycle in diurnal temperature range (DTR) for many stations in the United States, Mexico, Japan, and China.
The total cost to have a concrete retaining wall installed will be a combination of material and labor prices. For a basic wall you can expect to pay between $30 and $40 per square foot.
What is The Average Cost of Concrete Slabs Per Square Foot. The cost of concrete slabs will vary depending upon the size and depth of the slab as well as other factors. The average cost of a concrete slab will be between $5 and $7 dollars per square foot or $135 and $189 per cubic yard. Once the slab size is determined, then it is time to calculate the amount of concrete that will be needed. Concrete is sold per cubic yard which is 27 square feet.