Two W 310 ×74 steel wide-flange beams are bolted together to form a built-up beam as shown in the figure. What is the maximum permissible bolt spacing s if the shear force V= 80 kN and the allowable load in shear on each bolt is F = 13.5 kN (Note: Obtain the dimensions and properties of the W shapes from Table E-1(b).)
![644_a0985967-8894-492d-b837-8b5aeac56e85.png](https://secure.tutorsglobe.com/CMSImages/644_a0985967-8894-492d-b837-8b5aeac56e85.png)
![1421_f8fcce6e-fb27-4748-83a9-c83278ae82ec.png](https://secure.tutorsglobe.com/CMSImages/1421_f8fcce6e-fb27-4748-83a9-c83278ae82ec.png)