A small number of people will have a blood pressure at very high levels, above 240/120mmHg for example, and this can cause problems very quickly and it needs to be treated straight away. For a blood pressure chart of readings, click here.
Materials and installation for a stone retaining wall start around $25-$40 a square face foot and go up depending on materials, site conditions, and other factors. It costs $1,250-$2,000 or more for a wall 30 inches high and 20 feet long.
1 The cost of a stone wall may vary depending on the location, area, size, quality, material, and installation, among other factors. 2  On average, plan on budgeting around $35 to $75 per square foot for the material and installation costs of a stone wall. The wall stone alone is going to cost $50 to $500 per ton. 2  This will depend on the type of wall stone needed. 3  Depending on the rock, a ton can cover anywhere from 40 to 130 square feet.