Mars is on average about 225 million km from Earth (the distance varies greatly, depending on both planets' position in their orbits). That translates to an average distance of 12.5 light minutes. It can vary from about 4 minutes to 24 minutes, depending on Mars's current distance from Earth.
Below are some concrete prices to help you determine your new concrete foundation cost. 1  Concrete is typically measured by cubic yards (3âx3âx3â). 2  An average cost for a cubic yard of concrete is $75 to $125, depending on how much is needed and local prices. Labor costs to pour and form concrete run somewhere around $3.50 to $7.00 per square foot. 2  One homeowner paid $11,000 for a crawl space for a 1,500 square foot home. 3  One customer in Texas received a quote for a 2,500 square foot foundation slab of about $20,000.
Poured Concrete. According to the Concrete Network, the majority of the cost of a concrete foundation is the concrete itself. The price of concrete varies by region, but as of 2008, it averaged around $75 per cubic yard, or just under $3 per cubic foot. Concrete also requires forms and finishing work at between $1 and $1.50 per square foot and reinforcement with rebar or mesh at a cost of about $.10 per square foot.