If $l_{1}$ and $l_{2}$ are the lengths of long and short spans of a two way slab simply supported on four edges and carrying a loaw w per unit area, the ratio of the loads split into $w_{1}$ and $w_{2}$ acting on strips parallel to $l_{2}$ and $l_{1 <}$

- 1
  $\frac{w_{1}}{w_{2}} = \frac{l_{2}}{l_{1}}$
- 2
  
  $\frac{w_{1}}{w_{2}} = {(\frac{l_{2}}{l_{1}})}^{2}$
- 3
  
  $\frac{w_{1}}{w_{2}} = {(\frac{l_{2}}{l_{1}})}^{3}$
- 4
  
  $\frac{w_{1}}{w_{2}} = {(\frac{l_{2}}{l_{1}})}^{4}$

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