Desire Energy Solution Interview Questions and Answers

The construction period for an overhead tank typically ranges from 3 to 6 months, depending on various factors.

• Site preparation and foundation work usually take 2-4 weeks.

• The tank structure can take 1-3 months to complete, depending on size.

• Installation of piping and fittings may require an additional 2-4 weeks.

• Weather conditions can impact the timeline significantly, causing delays.

• For example, a small tank may be com...read more

Mix design for water-retaining structures ensures durability and impermeability, requiring specific materials and construction practices.

• Use of low permeability concrete to prevent water leakage, typically with a water-cement ratio of 0.4 or lower.

• Incorporation of additives like silica fume or fly ash to enhance strength and reduce porosity.

• Proper curing methods to maintain moisture and temperature, ensuring optimal hy...read more

Various pipes are used in water supply projects, each with unique properties and applications for efficient water distribution.

• PVC (Polyvinyl Chloride) pipes: Lightweight, corrosion-resistant, commonly used for residential water supply.

• HDPE (High-Density Polyethylene) pipes: Flexible, durable, suitable for underground installations and high-pressure applications.

• Ductile Iron pipes: Strong and resilient, often used for ...read more

Effective labor control and deployment optimize resources, enhance productivity, and ensure project success through strategic planning.

• 1. Detailed Planning: Create a comprehensive labor plan that outlines roles, responsibilities, and timelines. For example, using Gantt charts to visualize tasks.

• 2. Resource Allocation: Assign the right number of workers to tasks based on skill sets and project needs. For instance, deplo...read more

Honeycomb refers to voids in concrete, often due to improper placement or curing, requiring specific repair methods.

• Honeycomb occurs when air pockets are trapped in concrete during pouring.

• Common causes include inadequate vibration, poor mix design, or premature curing.

• Repair involves cleaning the area, applying a bonding agent, and filling with a suitable repair mortar.

• For example, using epoxy-based repair compounds c...read more

The construction cost of a typical overhead tank varies based on size, materials, and location.

• Cost typically ranges from $50 to $200 per cubic meter.

• A 100,000-liter tank may cost between $50,000 to $200,000.

• Factors influencing cost include site preparation, materials (concrete vs. steel), and labor.

• Additional costs may arise from permits, inspections, and utility connections.

Faced multiple challenges during project commissioning, including resource allocation, stakeholder communication, and technical issues.

• Resource Allocation: We struggled with limited manpower, which delayed critical tasks. For example, we had to prioritize tasks based on urgency.

• Stakeholder Communication: Misalignment with stakeholders led to conflicting expectations. Regular meetings helped clarify goals and timelines.

• ...read more

The water-cement ratio is crucial for determining concrete's strength and durability, influencing its overall performance.

• Lower water-cement ratio (e.g., 0.4) leads to higher strength and durability.

• Higher water-cement ratio (e.g., 0.6) results in weaker concrete, increasing porosity.

• Optimal ratio for most structural concrete is around 0.5.

• Excess water can cause segregation and reduce bond strength between aggregates.

• C...read more

Safety regulations at construction sites ensure worker protection and compliance with legal standards to prevent accidents and injuries.

• Use personal protective equipment (PPE) such as helmets, gloves, and safety goggles to protect workers from hazards.

• Implement fall protection measures, like guardrails and safety nets, especially when working at heights.

• Conduct regular safety training sessions to educate workers about ...read more

Yes, I have experience handling technical work in previous projects.

• I have a strong background in technical project management.

• I have successfully managed technical teams and projects in the past.

• I am comfortable working with technical tools and software.

• I have a track record of delivering technical projects on time and within budget.