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ok, I think I make a mistake> i will delete it . thank you.

Hi everyone. Can you give me an approximated ready mix design for compressive strength of 30Mpa and maximum size of aggregate 10 mm and the finess modulus of fine aggregate 2.8?

Hahahah. Thank you so much for your expression, I just want to be sure about the validity of one way analysis and I see now it is suitable.

Ok, I understand this point, now if the slab strengthen with reinforced mesh this steel mesh different in each direction “ as you said non homogeneous” and has (L/S) less than 2 But supported in two sides only, is it one way slab or two way slab?

Sorry but I am talking about Reinforced concrete slab not unreinforced, when I used finite element analysis the slab concave in both direction, this phenomena called two way action, but Timoshenko said that when slab supported in two sides only it will behave as one way slab regardless to (L/S)...

Thank you too BigInch , but if anyone use Timoshenko method to analysis a slab which has longer span to shorter span ratio less than 2 and supported on two sides only and then use FE(Finite Element) model in any program such as ANSYS, difference results will appeared due to the two way...

Thank you Jedclampett, I mean by L the length (span) of slab and S the width (short direction). I read in many concrete design books that the slab treated as one way slab if it is supported in two sides regardless of its longer span to shorter span ratio, but I am not quite sure if this...

Hi, I just want to ask about the behavior of a slab supported in two sides only and has (L/S) less than 2? Can I treat it as a one way slab? I mean if I use ANSYS program shall I get a curvature in the transverse side of it?