An increase in either of these physiological components (cardiac output or TPR) causes a rise in the mean arterial pressure. Vasodilation works to decrease TPR and blood pressure through relaxation of smooth muscle cells in the tunica media layer of large arteries and smaller arterioles.
Contractors' prices for 2-4 hours with heavy equipment removing a small area of concrete (such as a 8x10-foot patio 4-8 inches thick) start around $250-$550 and go up. Removing an average driveway is $1,000-$2,500 and up, particularly if it's reinforced concrete. Prices vary considerably by region.
âMost people call for a tear out and replace,â Danis says. âThe price can also vary depending on the proximity and availability of concrete.â. Angieâs List members nationwide reported paying between $6,275 and $8,500 for a poured concrete driveway, with an average cost of $7,394.