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 Ld 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.
Question 2
A rectangular cross-section simply supported RC beam having clear span 6 m and support width 350 mm has the cross-sectional dimension 300 mm x 500 mm The effective span of the beam as per IS 456: 2000 is _____mm.
Question 3
The environmental exposure condition of concrete buried under aggressive sub soil or ground water is classified as
Question 4
Match List-I (Prestressing system) with List-II (Type of anchorage) and select the correct answer using the codes given below the lists: List-I A) Hoyer B) Gifford Udall C) Lee-Mc call D)Magnel Blaton List-II 1) Flat steel wedges in sandwitch plated 2) High strength nuts 3) Split conical wedges 4) Stretchingthe wires between two bulk heads at a large distance apart
Question 5
A pre-stressed concrete beam of cross-sectional area A, Moment of inertia I, distance of NA from extreme top fibre is yt and from bottom axis is yb is subjected to a pre-stressing force such that the stress at top fibre is zero. What is the value of eccentricity? (radius of gyration r)
Question 6
The limiting tensile percentage reinforcement, pt, in WSM for a singly reinforced balanced rectangular section is ____% . [Take M20 grade concrete and Fe415 grade steel]
Question 7
An RC column 500 mm x 500 mm is reinforced with 4 bars of 25 mm diameter, placed at a cover of 50 mm to the centre of steel bars. The maximum and minimum stresses (in N/mm2) in concrete if the column is subjected to a load of 500 kN at an eccentricity of 50 mm about one of the axes is [Use M 15 concrete and m = 18]
Question 8
A plain square concrete footing for a column of size 500 mm x 500 mm is subjected to an axial load of 500 kN (working load). Assume an allowable soil bearing pressure of 275 kN/m2 at a depth of 1 m below ground. The area (in m2) of square footing and the angle∝(in degrees) between the horizontal plane through the bottom edge of the footing and the corresponding edge of the column at the interface are respectively [Take M20 grade of concrete and Fe415 grade of steel]
Question 9
A prestressed concrete beam of rectangular section 150 mm by 300 mm and span 8 m is axially prestressed by a tendon carrying an effective force of 200 kN. The beam supports a U.D.L of 7.5 kN/m including its self weight. The principal stresses (in MPa) are
Question 10
What is the net downward load to be considered for analysis of the prestressed concrete beam provided with a linear cable is shown in fig. bellow