If the maximum dip of a parabolic tendon carrying tension P is h and the effective length of the prestressed beam is L, the upward uniform pressure will be

- 1
  
  $\frac{8 h P}{l}$
- 2
  
  $\frac{8 h P}{l^{2}}$
- 3
  
  $\frac{8 h l}{P}$
- 4
  
  $\frac{8 h l}{P^{2}}$

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