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M-20 grade ratio is the mix proportion of cement, sand and aggregate for making concrete of strength 20 MPa.
M-20 grade concrete is commonly used for residential and commercial construction.
The ratio of cement:sand:aggregate is 1:1.5:3.
For 1 cubic meter of concrete, 0.28 cubic meters of cement, 0.42 cubic meters of sand, and 0.84 cubic meters of coarse aggregate are required.
A site engineer is responsible for overseeing construction projects and ensuring they are completed on time and within budget.
Managing and supervising construction activities
Ensuring compliance with building codes and regulations
Preparing and submitting progress reports
Collaborating with architects, contractors, and other stakeholders
Monitoring project budgets and timelines
Ensuring safety protocols are followed on site
Steel is used in steel structures due to its high strength, durability, and versatility.
Steel has a high strength-to-weight ratio, making it ideal for supporting heavy loads.
It is also durable and resistant to corrosion, making it suitable for outdoor structures.
Steel can be easily fabricated into various shapes and sizes, allowing for versatile design options.
Examples of steel structures include skyscrapers, bridges,
I applied via Walk-in and was interviewed before Sep 2022. There were 3 interview rounds.
Yes, code for concrete refers to the specific mix design used in construction.
Code for concrete includes the proportions of cement, aggregates, water, and additives used in a specific mix design.
Different codes and standards (such as ACI, ASTM) provide guidelines for designing concrete mixes for different applications.
For example, ACI 318 provides requirements for structural concrete used in buildings and other structu
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posted on 15 Mar 2022
I applied via Campus Placement and was interviewed before Mar 2021. There were 2 interview rounds.
Height of instrument is the vertical distance between the instrument and a reference point on the ground.
It is used in surveying to determine the elevation of points on the ground.
It is measured using a leveling instrument such as a level or a theodolite.
The height of instrument is calculated by subtracting the height of the reference point from the height of the instrument.
It is important to maintain a consistent heig...
The size of spacer bar depends on the size of the conductor and the voltage rating of the line.
The size of the spacer bar should be such that it maintains the required distance between the conductors.
The size of the spacer bar should be selected based on the voltage rating of the line.
The size of the spacer bar should be selected based on the size of the conductor.
The size of the spacer bar should be such that it can w...
Background condition refers to the existing circumstances or situation that has led to the current state of affairs.
Background condition can include factors such as previous experiences, events, or decisions that have influenced the current situation.
It is important to consider the background condition when analyzing a problem or making decisions.
For example, in engineering, understanding the background condition of a ...
posted on 4 Aug 2024
Road construction involves several steps including planning, designing, clearing the land, laying the foundation, paving, and adding finishing touches.
Planning: Determine the route, traffic flow, and necessary permits.
Designing: Create detailed plans including width, materials, and drainage systems.
Clearing the land: Remove trees, rocks, and other obstacles.
Laying the foundation: Level the ground, add layers of gravel ...
Sub grade to wearing course technical specifications include material type, thickness, compaction requirements, and drainage considerations.
Material type for sub grade can be natural soil, stabilized soil, or aggregate base.
Thickness of sub grade is typically specified based on soil conditions and traffic loads.
Compaction requirements ensure proper density and strength of the sub grade.
Wearing course materials can incl...
posted on 21 Jul 2021
posted on 17 Sep 2021
I applied via Walk-in and was interviewed in Mar 2021. There was 1 interview round.
Only 1 set of cube sample is taken at a casting of concrete of 5 or less than 5 Meter cube to save cost and time.
Taking multiple samples would increase the cost of testing.
The strength of concrete is usually consistent within a small volume.
ASTM C31 allows for only 1 set of samples for small volume concrete.
If the first set of samples fails, additional samples can be taken for verification.
Slump for casting of concrete is measured using a cone. Slump value may decrease as height increases in high rise buildings.
Slump is measured using a cone and the difference between the height of the cone and the height of the concrete after it settles is the slump value.
As height increases in high rise buildings, the pressure on the concrete increases, which may cause the slump value to decrease.
To maintain the desire...
The right bonding agent for recasting of concrete after rain would be a polymer-modified cementitious bonding agent.
The surface should be cleaned and dried before applying the bonding agent.
The bonding agent should be applied in a thin layer using a brush or roller.
The recasting of concrete should be done within the specified time frame mentioned by the bonding agent manufacturer.
Examples of polymer-modified cementitio...
Shear force is the force perpendicular to the beam and bending moment is the torque that causes bending of the beam.
Shear force is calculated by finding the algebraic sum of all the forces acting on one side of the beam.
Bending moment is calculated by finding the algebraic sum of all the moments acting on one side of the beam.
Shear force and bending moment diagrams are used to visualize the distribution of these forces...
CMDI and HDPE are two different types of plastic materials used in various applications.
CMDI stands for Chlorinated Polyethylene Modified Polyethylene and is a thermoplastic elastomer used in wire and cable insulation, automotive parts, and roofing membranes.
HDPE stands for High-Density Polyethylene and is a thermoplastic polymer used in packaging, pipes, and construction materials.
CMDI has better resistance to chemica...
posted on 5 Dec 2020
I applied via Company Website and was interviewed in Jun 2020. There were 3 interview rounds.
posted on 21 Jul 2021
based on 5 interviews
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