ZASTA ENGINEERING AND CONSULTANCY Site Engineer Interview Questions and Answers

The fluidity time for bentonite varies depending on its composition and usage.

• The fluidity time of bentonite is influenced by factors such as the concentration of bentonite in the mixture, temperature, and the presence of other additives.

• Higher concentrations of bentonite generally result in shorter fluidity times.

• The fluidity time can range from a few minutes to several hours.

• For example, in drilling applications, ben...read more

The ratio of M25 grade concrete is 1:1:2 (cement:sand:aggregate).

• M25 grade concrete has a compressive strength of 25 MPa after 28 days.

• The ratio of ingredients for M25 grade concrete is 1 part cement, 1 part sand, and 2 parts aggregate.

• For example, to make 1 cubic meter of M25 grade concrete, you would need 350 kg of cement, 700 kg of sand, and 1400 kg of aggregate.

Cement consumption of M20 concrete mix ratio is 360 kg/m3.

• M20 concrete mix ratio is 1:1.5:3 (1 part cement, 1.5 parts sand, 3 parts aggregate)

• Cement consumption for 1 m3 of M20 concrete is 360 kg

• To calculate total cement consumption, multiply 360 kg by the volume of concrete needed

Extra items added in billing should be justified with proper documentation and approval.

• Ensure that the extra item was actually used on the project

• Check if the extra item was approved by the client or project manager

• Document the reason for adding the extra item in the billing

• Provide evidence such as photos or receipts to support the inclusion of the extra item

Rate analysis involves calculating the cost of various items in a construction project.

• Rate analysis helps in determining the cost of materials, labor, and equipment for each item in a project.

• It involves breaking down the total cost into components like material cost, labor cost, machinery cost, and overheads.

• Rate analysis is essential for accurate budgeting and cost estimation in construction projects.

• For example, in...read more