Civil Engineering interview questions and answers for all freshers and practicing engineers are mentioned here . Hope you find these useful.These are under various headings of general, Structural and geo-technical .

## Interview Questions for Site Engineer Post

Site Engineer is plays a very crucial role in civil engineering as site engineer is the one responsible for actual execution as per engineering drawings. A thorough understanding of drawings is very much necessary for becoming a successful Site engineer. Here lets us see a few interview Questions related to civil Site engineer.

- What are Duties and Responsibilities of Site engineer
- Various Tests to be performed on construction materials arrived at site sand, cement.
- How to perform Cube test
- Size of cube
- What is Slump cone test.
- How is cylinder strength checked.
- Understanding of basic codes IS 456, ACI and AISC codes etc.
- Height from which the concrete to be poured.
- If a detail is missing or not clear in the drawing,how it is dealth with. Take a decision at site or ask the design office.
- Understanding all the views and blow out details in the drawing.
- Information found in Construction notes.
- Key Plan and orientation of North direction.
- Size of Vibrators used at site
- Tool box talk
- Safety measures taken at site related to workers and Equipment.
- Concrete Pour card report

## General Civil Engineering Interview Questions and Answers Related to civil and structural.

Here below are some interview Questions which are commonly asked in interviews for all fields of civil engineering

**What is the IS code for Plain and Reinforced Concrete**

IS :456

**What are the standard american codes for steel and concrete**

ACI and AISC

**What is the code of practice for General Construction in steel**

IS :800

**What is the code of Practice for loads**

IS : 875 part 1 – Dead Loads

IS :875 part 2 – Live Loads

IS : 875 part 1 – Dead Loads

IS :875 part 2 – Live Loads

IS :875 part 3 – Wind Loads

IS :875 part 4 – Snow Loads

**What is the IS code for Earthquake /Seismic**

IS :1893

**What are different grades of concrete**

**What does M and 25 mean in M25 grade of concrete**

M refers to the Mix and 25 is the characteristic compressive strength of 15 cm cube at 28 days in N/sq.mm

**Basic Design philosophy followed**

Working Stress and Limit State method

**What is the standard size of brick**

19 cm x 9 cm x 9 cm

**What is the purpose of providing frog on brick**

It is form key for holding mortar and joint to another brick above

**What are initial and Final setting times of cement**

Initial setting is about 30 min and final setting time is about 10 hrs.

**What are basic Admixtures used for concrete**

Acclerators : – To shorten the setting time Eg – Calcium chloride

Retarder : – To delay the setting time Eg – Carbohydrate derivatives

**Which type of cement is used is construction of massive Dam structures**

Low heat cement

**What are the equations of static equilibrium**

Summation of all horizontal , vertical and Moments equals to 0 i.e sumof all FX , FY and FZ forces = 0 and Moments about any point equals to 0.

**What is statically indeterminate strucutre**

A structure in which number of unknown forces is greater than the equations of equilibrium cannot be determined by Equilibrium equations..

**A point in space has how many degrees of freedom**

6 degrees

**For Steel structures what is permissible vertical deflection**

Span / 325

**What is the bending stress equation**

M/I = fb/y =E/R where

M -Bending Moment

I – Moment of Inertia

fb – Bending Stress

y – Distance from Neutral axis to the load

E – Modulus of elasticity

R — Radius of gyration

**What is effective length of compression member for condition effectively held in position at both ends and restrained against rotation at one end**

0.8L where L is unsupported length

**What is live load on sloping roof for slope greater then 10 deg**

Live Load is taken as 750 N/sqm less 20 N/sqm for every degree increase in slope over 10 deg.

**What is the flexure strength of concrete**

0.7 X Sqrt(fck) – fck is characteristic strength of concrete

**What is Modulus of elasticity of concrete**

5000 X sqrt (fck)

**What is effective cover**

Distance from face of concrete to Centre of gravity of steel bars.

**What is singly reinforced beam**

If reinforcement is provided only on single face then it is singly reinforced beam.

**What is balanced section**

If stress in concrete and steel reach their maximum values simultaneously then its balanced section.

**What is the minimum reinforcement in beams**

Ast/b*d = 0.85/ fy

**What is the maximum reinforcement in beams**

0.04*b*d

**What is the minimum reinforcement in slabs**

0.12 % of gross area

**What is the minimum reinforcement in columns**

0. 8% of area

**What is the maximum reinforcement in columns**

4%

**What are various checks in footing design**

Bending, shear,overturning and sliding

**Where is critical section for one way shear in footing**

At a distance “d” from face of column

**Where is critical section for two way or punching shear**

At a distance d/2 from face of column

**Where is the section for bending considered**

At the face of column

**What is the maximum no of steps in a flight**

12

**What are various limit states of strength**

Flexure, Compression, shear and torsion

**What are various limits states of serviceability**

Deflection, cracking and Vibration

**What is the slenderness limit for column**

Less than 12 , it is short column

More than 12 , it is Long column

**What are the minimum no of bars to be provided in rectangular column**

4

**What are minimum no of bars to be provided in circular column**

6

**What are various losses in prestressing**

a) Elastic deformation of concrete

b) Shrinkage of concrete

c)Creep of concrete

d) Relaxation of stress in steel

**Vicats apparatus is used for**

Consistency test

**Le chatliers apparatus is used for**

Soundness test

**when is masonry wall is said to be short wall**

If slenderness ratio is less than 8

**What is elastic limit**

If a body regains to original position after removal of load is elastic limit

**The shear stress on principal planes is**

Zero

**Which is more elastic mild steel or Rubber**

Mild steel

**What is Rate of change of shear force**

Load

**What is rate of change of bending Moment**

Shear force

**What are different methods of calculating deflection**

a) Conjugate Beam method

b)Moment area method

c)Strain energy method

d)Double integration method

**What is shear center in steel beam**

It is point or axis through which load acts

**What is Strut**

Struct is a compression member

**What is Modular ratio**

It is the ratio of Modulus of elasticity of steel to Modulus of elasticity of concrete

**What is the minimum diameter of bar used in column**

12

**What are bearing piles**

Bearing piles transfer the loads to the hard strata

**What are friction Piles**

Friction piles transfer the loads by friction between surface of pile and soil.

## Structural engineering interview Questions and Answers

Here are the List of some more civil engineering interview Questions related to structural Engineering

What are commonly used method in the design of structures – Working stress and Limit state method

Draw Stress strain diagram for Steel and concrete

Shear force and bending moment diagrams for simply supported beams,fixed beams, simple frames and continuous beams.

How to apply wind Load on structures. Steps involved.

Procedure for Performing response spectrum analysis.

Design of pile foundations.

Calculate development length.

Wind load on pipe racks.

Understanding geo-technical report and considering Safe bearing capacity from the report.

Lap Length

Effective lengths of columns

Hope you find these useful, shall keep on adding interview Questions. Also find below few links for basics of civil and structural engineering

### Interview questions related to Geo technical engineering

Geotechnical is an important subject of civil engineering which deals with Soil Mechanics and Soil behaviour.

Here Let us see a few civil engineering interview questions related to Geo technical engineering

- What is Void Ratio
- Soil Classifications as per Sieve analysis
- What is RQD
- Understanding soil investigation report and considering suitable safe bearing capacity as recommended.
- Ground improvement techniques.
- Soldier Pile wall
- Slope stability analysis.
- Chemical Properties of soil.
- Calculations of Safe bearing capacity.
- How important is N value.
- What are active and passive Earth pressure.
- Soil Friction understanding.