What is your name Where are you from Ratio of M 20 grade concrete. How to find the weight of steel bar used in reinforcement ? How to measurements the concrete volume? Standard size of brick. What is volume of cement bag 50 kg? How to calculate of concrete volume of circular column? What is one way slab and two way slab? Length of riser and tread. How many Nominal mix grade of concrete? How to check column shultring? What is initial and final setting time of cement? Types of footing. What is grouting? What is flat slab? What is unit weight of contacte? What is unit weight of steel? How to check gunia of wall?

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Accepted Answer

The interview questions cover various topics in civil engineering such as concrete, steel reinforcement, measurements, slabs, footings, and more.

M 20 grade concrete has a ratio of 1:1.5:3 (cement:sand:aggregate)
The weight of a steel bar used in reinforcement can be found using the formula: weight = (length x diameter^2 x density) / 162.27
The volume of concrete can be measured using the formula: volume = length x width x height
The standard size of a brick is 190mm x 90mm x 90mm
The volume of a 50 kg cement bag is approximately 0.035 cubic meters
The concrete volume of a circular column can be calculated using the formula: volume = π x radius^2 x height
A one-way slab is a slab supported on two opposite sides and carries the load in one direction only, while a two-way slab is a slab supported on all four sides and carries the load in both directions
The length of a riser (vertical part of a step) is typically around 150-200mm, and the tread (horizontal part of a step) is typically around 250-300mm
There are various nominal mix grades of concrete such as M5, M7.5, M10, M15, M20, etc.
Column shuttering can be checked by inspecting the alignment, verticality, and proper bracing of the formwork
The initial setting time of cement is the time taken for the cement paste to lose its plasticity and harden sufficiently, while the final setting time is the time taken for the cement paste to fully harden and gain strength
Types of footings include isolated footings, combined footings, strip footings, raft footings, etc.
Grouting is the process of filling the gaps or voids between tiles, stones, or concrete elements with a fluid material to provide stability and prevent water leakage
A flat slab is a reinforced concrete slab without beams, where the slab directly rests on columns
The unit weight of concrete typically ranges from 2200 to 2500 kg/m^3
The unit weight of steel is approximately 7850 kg/m^3
To check the gunia (plumbness) of a wall, a plumb bob or a spirit level can be used to ensure that the wall is perfectly vertical

Accepted Answer

My name is MD NOORAIN ANSARI.
BIHAR
1:1.5:3
D2/162 
190mmx90mm×90mm
0.0347m3
πr2h
One way slab:-  Ls/Ss grater then 2
Two way slab:- Ls/Ss grater then equal 2
150mm to 200mm riser
250 mm to 300mm tread
M5,M7.5,M10,M15,M10,M20
Top for plumb Bob
Initial 30mint 
Final 600mint
3 types of footing 
Filling the crack of wall
The slab which is supported on column.
( Flat slab don't have beam )
PCC= 24KN/m3
RCC=25KN/m3
7850Kg/m3
(A)2+(B)2+(C)2 right angle

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