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Two equal angles ISA 100 mm × 100 mm of thickness 10 mm are placed back-to-back and connected to the either side ofa gusset plate through a single row of 16 mm diameter rivets in double shear.
The effective areas of the connected and unconnected legs of each of these angles are 775 mm2 and 950 mm2 respectively. If these angles are NOT tackrivated, the net effective area of this pair of angles is
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- 3650 mm2
- 3450 mm2
- 3076 mm2
- 2899 mm2
Correct Option: D
As per IS, when two angles are not tack riverted, they will be considered as a single angle connected to one side of gusset plate
Area of angle
Connected leg: A1 = 775 mm2
unconnected leg: A2 = 950 mm2
| K1 = | = | |||
| 3A1 + A2 | 3 × 775 + 950 |
= 0.71
Net area, Anet = 2 (A1 + k1 A2)
= 2 (775 + 0.75 × 950)
= 2899 mm2
