An angle ISA 50 × 50 × 6 is connected to a gusset plate 5 mm thic
| An angle ISA 50 × 50 × 6 is connected to a gusset plate 5 mm thick, with 16 mm bolts. What is the bearing strength of the bolt when the hole diameter is 16 mm and the allowable bearing stress is 250 MPa?
A. 8 kN
B. 20 kN
C. 22 kN
D. 24 kN
Please scroll down to see the correct answer and solution guide.
Right Answer is: B
SOLUTION
Concept:
The bearing strength of a single bolt is given as
Bearing Strength, FB = Permissible stress in bearing (fbp) × bearing area (Ab)
Bearing area, Ab = hole diameter × thickness (t)
Where ,
t = minimum (Sum thickness of Covering plate / gusset plate thickness, thickness of main plate)
Calculation:
Given: fbp = 250 MPa, d = 16 mm;
Thickness of gusset plate = 5 mm and Thickness of main plate = 6 mm
∴ t = 5 mm
Bearing Strength, FB = Permissible stress in bearing (fbp) × bearing area (Ab)
FB = 250 × 16 × 5 = 20,000 N
∴ FB = 20 kN