The allowable shear stress in the web of mild steel beams decreases with__________________?

Related Mcqs:

1. The allowable tensile stress in structural mild steel plates for steel tank is assumed as________________?

   A. 95.0 MPa on net area
   B. 105.5 MPa on net area
   C. 105.5 MPa on gross area
   D. 150.0 MPa on gross area

2. Shear buckling of web in a plate girder is prevented by using________________?

   A. vertical intermediate stiffener
   B. horizontal stiffener at neutral axis
   C. bearing stiffener
   D. none of the above

3. The connection of intermediate vertical stiffeners to the web, not subjected to external loads, shall be designed for a minimum shear force (kN/m) of___________________?

   A. 75 t2/h
   B. 125 t3/h2
   C. 125 t2/h
   D. 175 t2/h

   where, t = the web thickness in mm
   h = the outstand of stiffener in mm

4. The web crippling due to excessive bearing stress can be avoided by_________________?

   A. increasing the web thickness
   B. providing suitable stiffeners
   C. increasing the length of the bearing plates
   D. none of the above

5. In case of plastic design, the calculated maximum shear capacity of a beam as per IS:800 shall be________________?

   A. 0.55 Awfy
   B. 0.65 Awfy
   C. 0.75 Awfy
   D. 0.85 Awfy
   where, Aw = effective cross-sectional area resisting shear fy = yield stress of the steel

6. Minimum thickness of web in a plate girder, when the plate is accessible and also exposed to weather, is______________?

   A. 5 mm
   B. 6 mm
   C. 8 mm
   D. 10 mm

7. The moment of inertia of the pair of vertical stiffeners about the center line of the web should not be less than__________________?

   A. 1.5dV/C
   B. 1.5d¥/C
   C. 1.5d¥/C2
   D. 1.5dY/C3

   where, ‘t’ is the minimum required thick-ness of the web and ‘C is the maximum permitted clear distance between vertical stiffener for thickness ‘t’

8. The forces acting on the web splice of a plate girder are__________________?

   A. axial forces
   B. shear and axial forces
   C. shear and bending forces
   D. axial and bending forces

9. Intermediate vertical stiffeners in a plate girder need be provided if the depth of web exceeds___________________?

   A. 501
   B. 851
   C. 200 t
   D. 2501

   where t is thickness of web

10. The minimum thickness of plates in a steel stack should be___________________?

    A. 4 mm
    B. 5 mm
    C. 6 mm
    D. 8 mm