Bolted joints 2

If core diameter of bolt is 13.8 cm the it’s nominal diameter is given by?

• 17.27 mm

• 15.34 mm

• 14.67 mm

• 16.34 mm

Refer to fig. Two plates are fastened by means of two bolts. The yield strength of bolt is 400 N/mm² and factor of safety is 4. Determine the permissible shear stress in the bolts.

• 100 N/mm²

• 50 N/mm²

• 25 N/mm²

• 75 N/mm²

What does the designation M 16 x 2 indicate?

• I.S.O. Metric fine thread

• I.S.O. Metric coarse thread

• B.S.F. Metric coarse thread

• B.S.F Metric fine thread

The structure shown is subjected to an eccentric force P=5kN and eccentricity=500mm. The horizontal distance between two bolts is 200mm and vertical distance between bolts is 150mm. The yield strength of bolts is 400N/mm² and factor of safety is 3. Referring to fig., Determine the primary shear force.

• 625N

• 1250N

• 2500N

• 1000N

Determine the primary shear stress to which the bolts are subjected if P=3kN.

• 3000N

• 2000N

• 1000N

• None of the above

Shank is the portion of bolt between the head and the thread.

• Yes

• No

The initial tension in a bolt, based on experiments

• P i = 1840 d N

• P i = 2840 d N

• P i = 2480 d N

• P i = 1420 d N

When the joint is not required as tight as fluid-tight joint, then the initial tension in a bolt may be

• P i = 2420 d N

• P i = 1420 d N

• P i = 1240 d N

• P i = 2480 d N