GATE CE 2020 RCC & PSC Quiz 2 (App update required to attempt this test)

As per IS 456:2000 for M20 grade concrete and plain bars in tension the design bond stress Further, IS 456:2000 permits this design bond stress value to be increased by 60% for HYSD bars. TH stress in the HYSD reinforcing steel bars in tension . Find the required development length, L_d, for HYSD bars in terms of the bar diameter, f, _____

A beam is built using M25 concrete and Fe-250 bars of 16 mm dia bars. In limit state design, the development length, L_d, in terms of diameter of reinforcement, for compression zone is _______ mm.
[ τ_bd = 1.4 N/mm²]

In the given statements, how many statements are CORRECT?
Statement I:

The maximum spacing of vertical shear stirrups should not exceed  or 300 mm.  
Statement II:

The development length L_d as per IS-456:2000 for deformed bar is given by
where is design bond stress in LSM for plain bars in tension.
Statement III:

The maximum size of reinforcement bar that can be used for 75 mm thick RCC slab is 8 mm.
Statement IV:

The minimum eccentricity for which an axially loaded column (350 mm x 350 mm) size with effective length of 3 m is 20 mm.

Four 16 mm diameter Fe415 grade steel bars are bundled together under compression in M25 grade concrete with a design bond strength as 1.4 MPa. The minimum development length is _______ mm.

A steel bar of 20 mm Fe415 grade is embedded in a concrete block of M20 grade. The bond stress τ_bd = 1.2 MPa as per IS : 456-2000, for mild steel in tension. The length of embedment is 1m. The maximum pulling force that can be applied on the bar is ___________ kN