Ruwad Civil Construction Sub Engineer Interview Questions and Answers

The execution of an elevated viaduct involves various tasks such as pile foundation, pier construction, post-tensioning girders, and bridge structures.

• Tasks include pile foundation construction for the viaduct, pier construction for support, post-tensioning of girders for strength, and bridge structure assembly.

• Activities also involve conducting load tests, NDT tests, deflection tests, and steel reconciliation for qual...read more

let, const, and var are all used to declare variables in JavaScript, but they have different scopes and behaviors.

• let: block-scoped variable, can be reassigned

• const: block-scoped variable, cannot be reassigned, but its properties can be modified

• var: function-scoped variable, can be reassigned

The test procedures for cement, steel, coarse aggregate, and sand involve various physical and chemical tests to ensure quality and suitability for construction purposes.

• Cement: Tests include fineness, setting time, compressive strength, soundness, and chemical composition.

• Steel: Tests involve tensile strength, yield strength, elongation, and chemical composition.

• Coarse Aggregate: Tests include sieve analysis, specific...read more

The grade of concrete refers to its strength and durability.

• Concrete is graded based on its compressive strength, measured in megapascals (MPa).

• Common grades of concrete include M10, M15, M20, M25, etc.

• The higher the grade, the stronger the concrete.

• Different grades of concrete are used for different applications, such as foundations, slabs, columns, etc.

28 days cube strength is a measure of the compressive strength of concrete after 28 days of curing.

• 28 days cube strength refers to the compressive strength of concrete cubes after they have been cured for 28 days.

• It is an important parameter to assess the quality and durability of concrete.

• The value of 28 days cube strength is typically expressed in megapascals (MPa) or pounds per square inch (psi).

• It is determined by ...read more

Surging is a phenomenon in which a system experiences rapid and temporary increases in pressure or flow rate.

• Surging can occur in various systems such as pipelines, compressors, pumps, and turbines.

• It is often caused by sudden changes in demand, equipment malfunctions, or improper system design.

• Surging can lead to damage to equipment, reduced efficiency, and safety hazards.

• Examples include water hammer in pipelines and

Froude number is a dimensionless number used to quantify the influence of gravity on fluid flow.

• Froude number is defined as the ratio of inertia force to gravitational force in a fluid flow.

• It is used to determine the type of flow (subcritical, critical, or supercritical) in open channel flow.

• Froude number is calculated as Fr = V / sqrt(g * d), where V is velocity, g is acceleration due to gravity, and d is depth of fl

Weeping is the process of fluid leaking out of a solid material, often due to damage or excess moisture.

• Weeping can occur in materials such as wood, concrete, and metal.

• It is often a sign of structural damage or deterioration.

• Examples include water weeping from a crack in a wall or oil weeping from a car engine.

• Weeping can also refer to the shedding of tears in humans and animals.

A basic PFD of a WTP plant including feed quality and sensors.

• Include feed quality parameters such as turbidity, pH, temperature, and flow rate

• Include sensors for monitoring parameters like chlorine levels, pressure, and conductivity

• Show the flow of water through various treatment processes like coagulation, flocculation, sedimentation, filtration, and disinfection

Process checks in line testing of a 6inch dia pigging line and associated calculations

• Pressure testing to ensure integrity of the line

• Flow testing to check for blockages or restrictions

• Calibration of pigging equipment for accurate results

• Calculations involve pressure drop, flow rate, and pigging efficiency

• Recording and analyzing data for future reference

To complete my target within time, I prioritize tasks, set realistic deadlines, communicate effectively with team members, and regularly track progress.

• Prioritize tasks based on importance and deadlines

• Set realistic deadlines and break down tasks into smaller achievable goals

• Communicate effectively with team members to ensure everyone is on the same page

• Regularly track progress and make adjustments as needed

• Use tools l...read more