RE: How much floor space does an average person occupy when standing. Worse case scenario - I usually use 2 sq ft per person - but that is tightly packed. RE: How much floor space does an average person occupy when standing. I want to thank every one for their answers.
Cost of a concrete driveway. Gary Salerno, owner of A+ Plus Concrete & Foundation Repair in Carnegie, Pennsylvania, says the average cost of a concrete driveway is $5,000 to $20,000, depending on several variables. He adds contractors who use the best materials typically charge $7 to $10 per square foot.
Presently, gravel prices are 50 cents or 2 dollars per square foot for the aggregates. This would make an average concrete driveway price of $300-$1,200 for 12Ã50-feet or a total of about $10,000-$40,000 for a Â¼ mile long, 2-vehicle-wide concrete driveway. Cement driveway costs donât get much lower than that.