Sobha Project Engineer - Civil Interview Questions, Process, and Tips

Q1. How to check concrete slump
Ans. 
Concrete slump can be checked using a slump cone and measuring the difference in height before and after filling with concrete.
• Prepare the slump cone by wetting it and placing it on a flat, level surface.

• Fill the cone with concrete in three layers, each tamped with a rod 25 times.

• Lift the cone vertically and measure the difference in height between the top of the cone and the displaced concrete.

• The slump value is the d...read more
Answered by AI
Add your answer
Q2. How to check concrete cube
Ans. 
To check concrete cube, perform a compression test to determine the strength of the concrete.
• Perform a compression test on the concrete cube using a compression testing machine.

• Calculate the compressive strength of the concrete cube by dividing the maximum load applied to the cube by the cross-sectional area of the cube.

• Compare the compressive strength of the concrete cube with the specified strength in the design mix ...read more
Answered by AI
Add your answer

Subject knowledge of civil engineering

Current news topis and day to day life

Q1. Civil engineering question and aptitude
Add your answer
Q2. Laminar flow in fluid
Ans. 
Laminar flow is a type of fluid flow where the fluid moves in parallel layers with minimal mixing between the layers.
• Laminar flow occurs at low Reynolds numbers.

• The flow is smooth and predictable, with little to no turbulence.

• It is characterized by a constant velocity profile across the flow.

• Examples include flow in small pipes, blood flow in capillaries, and flow in a viscous liquid.
Answered by AI
Add your answer
Q3. Turbulent flow in fluid
Ans. 
Turbulent flow in fluid is characterized by chaotic and unpredictable movement of particles.
• Turbulent flow occurs when the fluid velocity exceeds a certain threshold, causing eddies and vortices.

• It is characterized by irregular fluctuations in velocity and pressure within the fluid.

• Turbulent flow is common in natural phenomena like rivers, oceans, and atmospheric air currents.

• It is important to consider turbulent flow ...read more
Answered by AI
Add your answer

Quality control and waste management

Maths reasoning and core subjects

Q1. M20 Grade Concrete proportion?
Ans. 
M20 grade concrete proportion is 1:1.5:3 (cement:sand:aggregate) with a compressive strength of 20 MPa.
• M20 grade concrete is commonly used for residential and commercial construction.

• The proportion of cement, sand, and aggregate is 1:1.5:3 by volume.

• The compressive strength of M20 grade concrete is 20 MPa.

• The water-cement ratio for M20 grade concrete is typically 0.5.
Answered by AI
Add your answer
Q2. M40 concrete strength?
Ans. 
M40 concrete has a compressive strength of 40 megapascals (MPa).
• M40 concrete is a high-strength concrete mix commonly used in construction.

• It has a compressive strength of 40 MPa, which means it can withstand heavy loads and pressure.

• M40 concrete is typically used in the construction of bridges, high-rise buildings, and other structures that require high strength and durability.
Answered by AI
Add your answer

Q1. 20mm dia rod unit weight?
Ans. 
The unit weight of a 20mm dia rod varies depending on the material it is made of.
• The unit weight of a 20mm dia rod made of steel is approximately 2.47 kg/m

• The unit weight of a 20mm dia rod made of brass is approximately 3.68 kg/m

• The unit weight of a 20mm dia rod made of aluminum is approximately 1.57 kg/m
Answered by AI
Add your answer