Dear all

I made model of 2 spans slab of equal length = 3m ........ depth = 0.12 m ....... width = 0.5 m
each span is loaded with 2 concentrated loads until failure
From the experimental studies the failure load = 114 KN , but when i run my model i found the failure load = 30 KN

I checked the load value i found that i started loading with 1 KN = 0.001 MN , so no mistake in loading dimensions
i checked the reinforcement and materials ..... and no mistake in my inputs in Fcu , Fy  ...... my monitoring point are right and i can't find where is the problem ?

can you help me please & thank you so much