A wooden beam of width $B$ and depth $D$ is strengthened by two steel plates of thickness $' t ‵$ and depth $' D ‵$ on both sides

of the beam. The allowable bending stress in wood is $σ$ and modular ratio of steel to wood is $' m ‵$ . The allowable bending

moment

- 1
  
  $\frac{σ}{6} D^{2} (B + m t)$
- 2
  
  $\frac{σ}{6} D^{2} (B + 2 m t)$
- 3
  
  $\frac{σ}{6} D^{2} (2 B + m t)$
- 4
  
  $\frac{σ}{6} D^{2} (2 B + 2 m t)$

Display Comments

Leave a comment

Login at first then you can submit comment. Click here to login.