Keltech Solutions Interview Questions, Process, and Tips

Waterproofing involves various methods to prevent water infiltration in structures, ensuring durability and safety.

• 1. Membrane Waterproofing: Uses sheets or liquid membranes to create a barrier. Example: Bituminous membranes.

• 2. Integral Waterproofing: Adds waterproofing agents to concrete mix. Example: Crystalline waterproofing.

• 3. Coating Waterproofing: Applies a protective layer on surfaces. Example: Elastomeric coati...read more

Basement waterproofing involves techniques to prevent water intrusion and protect the foundation from moisture damage.

• Exterior Waterproofing: Involves digging around the foundation and applying waterproof membranes.

• Interior Waterproofing: Uses sealants and coatings on walls and floors to prevent moisture penetration.

• French Drains: A drainage system installed around the foundation to redirect water away.

• Sump Pumps: Devi...read more

Waterproofing a retaining wall involves various methods to prevent water infiltration and protect structural integrity.

• 1. Use of waterproof membranes: These are applied to the wall surface to create a barrier against water.

• 2. Drainage systems: Installing weep holes or drainage pipes to redirect water away from the wall.

• 3. Backfill with gravel: Using gravel as backfill material allows for better drainage and reduces hyd...read more

PU waterproofing uses polyurethane to create a durable, flexible barrier against water, ideal for various construction applications.

• Highly flexible and durable, making it suitable for surfaces that experience movement.

• Commonly used in roofs, terraces, and balconies to prevent water ingress.

• Ideal for basements and foundations to protect against moisture and flooding.

• Used in water tanks and swimming pools for effective w...read more

Expansion joints are treated using various methods to ensure flexibility and prevent damage in structures.

• Regular inspection and maintenance to identify wear and tear.

• Use of sealants to prevent water ingress and corrosion.

• Replacement of damaged joints with new materials, such as elastomeric or metallic joints.

• Installation of protective covers to shield joints from environmental factors.

• Application of lubricants to redu

Waterproofing a podium involves several steps to ensure durability and protection against water damage.

• 1. Surface Preparation: Clean the podium surface to remove dirt, debris, and any existing coatings.

• 2. Repair Cracks: Fill any cracks or gaps with appropriate sealants to prevent water ingress.

• 3. Apply Waterproof Membrane: Use a liquid or sheet membrane to create a barrier against water.

• 4. Install Drainage Systems: Ens...read more

HDPE waterproofing uses high-density polyethylene sheets to create a durable, impermeable barrier against water infiltration.

• HDPE stands for High-Density Polyethylene, a strong plastic material.

• Commonly used in construction for foundations, roofs, and basements.

• Provides excellent resistance to chemicals and UV radiation.

• Installation involves laying sheets and sealing seams to ensure waterproofing.

• Examples include pond ...read more