It came out to an average of 200 leaks per year or 5.2 leaks on each building annually. In terms of 2006 dollars, the average roof replacement cost came out to $269 per square meter over 9 years, or $4.5 million spent on replacement of 16,900 square meters over a 9-year stretch.his post builds on one of earlier posts about commercial roof maintenance costs. How much does a commercial roof replacement cost? One study reports on a roof with average dimensions of 10,000 square feet, a new commercial roof can cost over $42,500, or over $4.25 per square foot.
Spinal cord passes through the vertebral foramen of vertebrae C1-C7, T1-T12 and L1 (sometimes L2). Cauda equina (nerve roots of lower spinal cord) pass through the vertebral â¦ foramen of vertebrae L3-L5 and the sacral canal.Spinal nerve roots pass through all of the intervertebral foramen and the sacral foramen.From Wikipedia) The internal carotid artery passes superiorly from the carotid canal in the base of the skull, emerging via that part of the foramen lacerum which is not occl â¦ uded by cartilage.
a pathway over which a visual sensation is transmitted from the retina to the brain. A pathway consists of an optic nerve, the fibers of an optic nerve traveling through the optic chiasm to the lateral geniculate body of the thalamus, and optic radiations terminating in an occipital lobe. Each optic nerve contains fibers from only one retina.