Greenmark Developers Interview Questions and Answers

Minimum cover block sizes for footings, columns, beams, and slabs are essential for durability and strength.

• Minimum cover block size for footings is 50mm

• Minimum cover block size for columns is 40mm

• Minimum cover block size for beams is 25mm

• Minimum cover block size for slabs is 20mm

Extra bars are provided to beams for reinforcement and to increase their load-bearing capacity.

• Extra bars help to prevent cracking and failure of the beam under heavy loads.

• They also improve the ductility and toughness of the beam.

• Extra bars are added based on the design requirements and load calculations.

• They are usually placed at the bottom of the beam to resist tension forces.

• Examples of extra bars include stirrups,

OPC is Ordinary Portland Cement and PPC is Portland Pozzolana Cement.

• OPC is made from clinker and gypsum while PPC is made from clinker, gypsum, and pozzolanic material.

• PPC has higher durability and strength than OPC.

• PPC is more eco-friendly as it requires less energy to produce.

• OPC is commonly used for general construction while PPC is used for structures that require high strength and durability.

• PPC is also more resi...read more

The minimum depth of slab depends on various factors such as load, span, and type of slab.

• The minimum depth of slab is generally 4 inches for residential buildings.

• For commercial buildings, the minimum depth of slab is around 6 inches.

• The depth of slab also depends on the type of slab, such as one-way or two-way slab.

• The span of the slab and the load it will bear also affect the minimum depth.

• The minimum depth of slab ...read more

Different tests for cement and concrete include compressive strength test, water absorption test, setting time test, and soundness test.

• Compressive strength test measures the ability of cement or concrete to withstand pressure

• Water absorption test measures the amount of water absorbed by cement or concrete

• Setting time test measures the time taken for cement or concrete to set

• Soundness test measures the ability of cemen...read more

Initial setting time is the time taken by concrete to harden to a certain degree, while final setting time is the time taken for it to completely harden.

• Initial setting time is typically around 30 minutes to 1 hour

• Final setting time is typically around 4 to 6 hours

• Factors affecting setting time include temperature, humidity, and type of cement used

PPE stands for Personal Protective Equipment.

• PPE is equipment worn to minimize exposure to hazards that may cause serious workplace injuries or illnesses.

• Examples of PPE include safety glasses, gloves, hard hats, respirators, and safety shoes.

• PPE should be selected based on the hazards present in the workplace.

• Employers are responsible for providing PPE to their employees and ensuring that it is used properly.

• Employees...read more

Standard brick size is 190mm x 90mm x 90mm and nominal brick size is 200mm x 100mm x 100mm.

• Standard brick size is also known as actual brick size.

• Nominal brick size is the size specified by the manufacturer.

• Standard brick size is smaller than nominal brick size.

• Standard brick size is used for calculation of brickwork.

• Nominal brick size is used for estimation of materials required.

Frog is provided to the brick to prevent cracking and improve strength.

• Frog creates a void in the brick which reduces the weight and improves insulation.

• Frog also helps in better bonding of the mortar with the brick.

• It prevents cracking by allowing the brick to expand and contract without breaking.

• Frog also improves the strength of the brick by distributing the load evenly.

• Example: Hollow bricks have larger frogs to in