How To Calculate Concrete Floor Load Capacity

Calculate self weight of the concrete slabs.

How to calculate concrete floor load capacity.

Load capacities of simply supported concrete slabs. If the example floor is 6 by 9 metres 20 by 30 feet the total area is 54 square metres 600 square feet. Machines is approximately 2 4 x 3 6 meters or a total of 8 64 square meters. Increasing the total weight on the floor to 4 480 pounds however results in a live load of 40 psf which is beyond the floor s load capacity.

Load capacity of simply supported concrete slabs. 500 kg m2 is typical for office storage space and similar. To calculate live maximum floor live load capacity. Assuming that the entire base is available and there are no leveling pads then the force exerted on the floor is 125knewtons assuming that the weigh not given in metric tonnes so the total force imposed by the machine when not working is approximately 14 4 kn m 2.

Calculate the total area supported by one joist according to this formula. Imposed loads varies from approximately 1 5 kn m2 153 kg m2 in domestic buildings to approximately 1 0 kn m2 1053 kg m2 in heavy industrial areas. Joist spacing in metres x span in metres. In other words it refers to the capacity of an access floor system to continue to perform its intended function when supporting a specific amount of weight.

Live load for maintenance likely to come on the concrete slab. This is the load bearing capacity of your concrete overall. Load capacity refers to the maximum demand stress or load that may be placed on a given raised floor system under normal or otherwise specified conditions for an extended period of time. The only way to specifically calculate the load capacity of concrete is to have a licensed structural engineer process the formulas and consult a myriad of tables that all apply to the specific design of your project.

Estimate any other loads e g. 54 x 269 14 526 kg 32 024 lb. Step 4 mark your project plans with a highlighter wherever the psi amount you calculated in step 3 is found. Add the base psi you found in step 1 to any additional psi provided by added re enforcment in step 2.

This number tells you the total load capacity of your floor.