With usual notations of the letters, the shear stress fs at any point of the cross-section is given by

• A. <img src="/_files/images/civil-engineering/steel-structure-design/103-14-129-1.png">
• B. <img src="/_files/images/civil-engineering/steel-structure-design/103-14-129-2.png">
• C. <img src="/_files/images/civil-engineering/steel-structure-design/103-14-129-3.png">
• D. <img src="/_files/images/civil-engineering/steel-structure-design/103-14-129-4.png">