What types of loads affect resilient flooring?
Impact loads are those momentary indentations like those produced from walking traffic. These impact pressures are high (often as much as several thousand pounds per square inch), and the smaller (or sharper) the impact area, the more damaging the indentation. Static loads are any load remaining in a stationary position for long periods of time. Static load limit values have been established to aid in the selection and protection of resilient flooring for use under these conditions. Newly installed floors should not be exposed to routine rolling loads (carts, litters, etc.) for at least 72 hrs. after installation to allow setting and drying of adhesives. The bearing surface area of wheels is deceptively small, resulting in higher compressive forces than may be anticipated. Therefore when moving heavy fixtures or appliances over resilient flooring on casters or dollies, the flooring should be protected with 1/4″ or thicker plywood, hardboard or other underlayment panels.
