What kind of span lengths can be achieved with hollowcore plank systems?
The design recommendations for span lengths vary slightly from product to product, but here are a few general rules of thumb to keep in mind. If we assume a uniform superimposed load of 100 pounds per square foot and an un-topped system, these guidelines apply: 6-inch depth hollowcore plank: 22-foot spans 8-inch depth hollowcore plank: 29-foot spans 10-inch depth hollowcore plank: 35-foot spans 12-inch depth hollowcore plank: 40-foot spans 16-inch depth hollowcore plank: 50-foot spans Factors such as concentrated loads and large openings can affect the span capabilities of your system. Once you have determined the given loadings, fire endurance ratings, span lengths and slab thickness for your project, consult a local MAPA producer for their published load tables.
