Which of the following statements is/are correct?
1
The design bond stress of plain bars in tension is a function of grade of concrete used.
2
Anchorage length of straight bar in compression shall be equal to the development length of bar in compression
3
The anchorage value of standard U type hook shall be equal to 8 times the diameter of the bar
4
Reinforcement splicing is not done at sections where the bending moment is more than 50% of the moment of resistance.