Skip to main content

Multiple Choice Questions (MCQ) On Design of R.C.C. Structuresc (Part 4)

31. If there is simply supported one way slab having span 3000 mm and modification ratio is 1.4, then effective depth of slab will be..........

a) 142.85 mm

b) 107.14 mm

c)85.71 mm

d) 71.42 mm

Answer: b) 107.14 mm

 

32. For one way simply supported slab having span of 4000 and effective depth 150 mm then it's effective span will be..........

a) 3850 mm

b) 4000 mm

c) 4150 mm

d) None of these

Answer: c) 4150 mm

 

33. For cantilever slab having clear span of 1000 and effective depth 150 mm then its effective span will be..........

a) 1075 mm

b) 1150 mm

c) 850 mm

d) None of these

Answer: a) 1075 mm

 

34. If main steel reinforcement is provided along both span the type of slab is..........

a) One way slab

b) Two way slab

Answer: b) Two way slab

 

35. Distribution reinforcement in a simply supported slab, is provided to distribute ..........

a) Load

b) Temperature stress

c) Shrinkage stress

d) All the above

Answer: d) All the above

 

36. In a simply supported slab alternate bars are curtailed at ..........

a) One- fifth of the span

b) One sixth of the span

c) One seventh of the span

d) One eight of span

Answer: c) One seventh of the span

 

37. When slab is supported on all the four edges and the ration of long span to short span is small, bending takes place along both the spans such a slab is known as ..........

a) Slab spanning in one direction

b) One way slab

c) Slab spanning in two directions

d) Two way slab

Answer: c) Slab spanning in two directions

 

38. The effective length of column (l), held in position at both ends but not restrained in direction, is equal to ..........

a) 0.67L

b) 0.85L

c) L

d) 1.2L

Answer: c) L

 

39. The effective length of column (l), held in position and restrained in direction at one end and the other end effectively restrained in direction but not held in position, is equal to , is equal to ..........

a) 0.67L

b) 0.85L

c) L

d) 1.2L

Answer: d) 1.2L

 

40. The effective length of a 7 m long column when its both ends are fixed will be ..........

a) 4.55 m

b) 5.95 m

c)  7 m

d)  8.4 m

Answer: a) 4.55 m


Labels:

Comments

Post a Comment

Popular posts from this blog

Rolled Steel Sections

  Rolled Steel Sections       Structural steel sections are hot rolled into different shapes and sizes to form the different sections. Cross section and size are governed by functional requirements, dimensional and weight capacity of rolling mills, arrangement of material for optimum structural efficiency. In a rolling mill molten steel from furnace is poured into continuous casting system where steel solidifies but it is not allowed to cool completely. Then hot steel passes through series of rollers. Such series of rollers squeezes steel into desired cross sectional shape. If the load to be resisted is small single rolled steel sections are used. If the single section is insufficient, single sections are combined or built up with angles/ channels/ I sections with or without cover plates and /or laced, providing sufficient resistance to heavy loads. Most commonly used hot rolled steel shapes are as follows: 1. Rolled Steel I -Sections 2. Rolled Steel C...
1 comment
Read more

How to Use Optical Square and Open Cross Staff

Offsets can be accurately set up, particularly long offsets, by use of optical instruments like cross staff or optical square etc.    a) Cross Staff:             Two pairs of vertical slits, mounted orthogonally on a pole staff constitutes a simple instrument for setting out normal offsets as depicted in Figure. Each pair of slits can form a line of sight. It is fixed on a stand. Two persons are required to operate cross staff. Use of cross staff: 1. To find a foot of perpendicular on chain line 2. To set out the perpendicular from a given point.   b) Optical Square: It may be noted that at least two surveyor’s are required to set normal offsets while using cross staff. This disadvantage can be overcome if optical square is used for this purpose as only single surveyor can perform this task. Principle of optical square:   The angle between the first incident ray and the final reflected ray is twice that of t...
1 comment
Read more

Methods of Structural Design

Methods of Structural Design   There are many methods of design out of them following two are more popular: 1. Working Stress Method. 2. Limit State Method.   1. Working Stress Method: In this method, uncertainties such as correct estimation of load, possibility of occurrence of higher design load, material imperfection and geometrical imperfections in the structural members were taken into account in one single factor known as factor of safety. A particular section just reaching to yield stress at a maximum stressed fiber is considered to be a benchmark for estimating the capacity of the steel. Structural members are not allowed to stress more than allowable stress to ensure perfect elasticity. Different factors of safety were used to arrive allowable stresses for different types of stresses in structural members such as beam, column, tension member, base plate and fastners. Using estimated working/ service loads and their logical combinations the sections are desig...
Post a Comment
Read more