Friction testing to characterize skid resistance is a critical safety consideration for airport runways. While visual evaluations of runway conditions are important to note structural deficiencies and drainage problems, i.e. ponding and groove deterioration, they are not sufficient to determine poor friction. This is where regularly scheduled Continuous Friction Measurement Equipment (CFME) is utilized. . CKS Hydro Services has the equipment and the expertise to give airports this measurement.

Tests are taken on the ends of runways where friction deterioration is expected. The test is taken on a non-contaminated surface, such as along the edge of the pavement at 40mph or 60mph to get a base reading for the "clean" pavement. Then readings are taken in the landing area, or touch-down zone, of the runway where rubber build up and other surface contaminates collect. To be considered having a sufficient friction coefficient, the touch-down zone measurement must be at least 80% of the value of the clean pavement. If the measurement falls below the 80% value, then the cause for the drop in friction must be determined, and measures must be taken to restore the friction coefficient to acceptable levels. As mentioned, the most common cause for reduction in friction coefficients is rubber accumulation which is easy to recognize and relatively inexpensive to correct.

Information needed for a quote based on mobilization from Ocean Springs, Mississippi includes:

• Location
• Number of runways
• Need for pre-friction testing, post-friction testing or both