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.
Basic, construction-grade concrete costs about $5 to $10 per square foot, including installation. Opting for fancier, decorative versions such as stamped or colored concrete will add several dollars per square foot to the price. Very high-end concrete could cost as much as $15 per square foot. Again, if youâre building a driveway where none existed, budget about an extra $2 to install a layer of gravel beneath the concrete. Removal of an existing driveway usually runs $50 to $60 per hour. Long lasting - Concrete has a long life expectancy. Properly maintained, it can last 30 to 40 years.