THE BASIC PRINCIPLES OF TEMPORARY CARPET PROTECTION FILM

“Big missile�?indicates a 2x4�?released at 50 feet for each 2nd, simulating hurricane-pushed particles, and approximating the influence of a brick or cinder block thrown at an exterior window.�?In the exam, a five-pound steel ball is frequently dropped around the center of a horizontally-mounted sample. The drop height is at the very least