A tension member is made up of a single angle 200 mm × 150 mm × 15 mm with a gross area of 30 cm2. Two rows of 18 mm diameter bolts (take hole diameter = 20 mm) are used (as shown in figure (a) and (b)). What is the net area?
1
2460 mm2
2
2500 mm2
3
2400 mm2
4
2560 mm2