![]() The above information is generic only and may need some refinements or adjustments to suit your individual requirements. The method and values shown above is not standard and may not be applicable to all types of products and package. ![]() This is your safety factory for calculation of your Compression Strength specification.ĭisclaimer: The above is only a rough illustration of how to calculate the safety factor to find out the desired CS specification. Now give marks to all 5 questions on a scale of 1 – 5, then calculate the average and round it off to the next higher digit. Q.5 : Is the product for export? or how big is your (or your customer’s) brand ? Q.4 : Is the product expensive or hazardous? We use rebar where the concrete is subjecting to tensile stresses and when it does not strong enough to act along to carry the loads. Tube lights are very fragile and cannot take loads. The tensile strength of rebar and the compressive strength of concrete are the two main strength parameters we consider in structural designs. The following chart shows Bursting Test and Edge Crush Test performance standards of corrugated box liners based on the combined weight of a box and its contents. A 350 test box is rated to hold up to 120 lbs. of box and contents while the 275 box can hold up to 95 lbs. Jam Bottles are glass and can take loads. The 200 test box is rated to hold up to 65 lbs. Q.3 : Is the product fragile ? If the carton fails, is the products primary packaging designed (or capable) to take loads ?Į.g. Q.2 : How long is the package supposed to be stored in a warehouse before it reaches the consumer? Q.1 : How far will the package travel from the factory? Local Hence, Compression Strength = Stack Load x Safety factor (2 to 5)īelow is an approximate method of calculating your safety factor. ![]() If Compression Strength of the carton was equal or less than the Stack Load, then the lowest carton would surely collapse. We now know that 180 kg of stack load will come onto the lowest carton during warehousing or transpiration. The below sketch shows the calculation of a stack height of 10 cartons where each carton weighs 20 kg. If different, which one is higher? Use it for calculations. Stacking Load is the amount of physical load that a carton is expected to take during any point of its life-cycle.įirstly check if the stack height of the warehouse is the same as the transportation. Many a times, people get confused between “Compression Strength” and “Stacking Load”.Ĭ ompression Strength (CS) is derived from Stacking Load (SL).
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