Orbital cellulitis is a serious condition that usually occurs secondary to infection in the maxillary and ethmoidal paranasal sinuses. If left untreated, it can lead to blindness, cavernous sinus thrombosis, meningitis, or cerebral abscess.
Marine plywood is frequently used in the construction of docks and boats. It is much more expensive than standard plywood: the cost for a typical 4-foot by 8-foot 1/2-inch thick board is roughly $125 U.S. or around $3.50 per square foot, which is two to three times as expensive as standard plywood, depending on grade.arine plywood can be graded as being compliant with BS 1088, which is a British Standard for marine plywood. There are few international standards for grading marine plywood and most of the standards are voluntary. Some marine plywood has a Lloyd's of London stamp that certifies it to be BS 1088 compliant.
Marine plywood is not waterproof; only the adhesive that binds the plies together is waterproof. If you plan to use marine plywood in a wet environment, it should be painted and any joints caulked just as you would with any other material.on-U.S. sources of marine plywood may use cedar or other woods for the fascia plies. All plies of wood are at least B grade, having knots, but without knotholes. The panels are glued together with a waterproof structural adhesive. The core may have a gap no larger than 1/8-inch throughout.