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Precast structures are pre-made concrete elements used in construction.
Precast segments are manufactured off-site and transported to the construction site for assembly.
They are commonly used in bridge construction, tunnels, and other large-scale infrastructure projects.
Precast segments can be designed to fit specific project requirements, reducing construction time and costs.
They offer high durability and strength, and...
Segment casting can be done using various methods depending on the material and application.
One method is sand casting, where a mold is created using sand and the molten metal is poured into it.
Another method is investment casting, where a wax pattern is created and coated with ceramic before the metal is poured.
Die casting is a method where molten metal is forced into a mold under high pressure.
Continuous casting is u...
Grade of concrete refers to its strength and durability.
Grade of concrete is denoted by a number followed by 'M' which stands for mix.
The number represents the compressive strength of concrete in megapascals (MPa).
Common grades of concrete include M10, M20, M30, etc.
Higher grade concrete has higher strength and durability.
For example, M20 grade concrete has a compressive strength of 20 MPa.
Design mix of concrete refers to the proportion of materials used in making concrete.
Design mix is determined based on the strength and durability requirements of the concrete.
The mix includes cement, water, aggregates (sand, gravel, crushed stone), and sometimes admixtures.
The proportions of each material are specified in terms of weight or volume.
For example, a common mix for general use is 1:2:3 (cement:sand:gravel)...
Segment casting is a method of casting concrete segments for tunnel lining.
Segments are cast in a factory and transported to the tunnel site.
Segments are then assembled to form a complete tunnel lining.
This method is commonly used in tunnel construction projects.
It allows for faster construction and better quality control.
Examples include the Channel Tunnel and the SMART Tunnel in Malaysia.
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I applied via Referral and was interviewed before May 2023. There was 1 interview round.
I applied via Approached by Company and was interviewed in Feb 2023. There were 3 interview rounds.
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I applied via Walk-in and was interviewed in Aug 2023. There were 4 interview rounds.
A chiller is a machine that removes heat from a liquid via a vapor-compression or absorption refrigeration cycle.
Chillers are commonly used in air conditioning systems to cool buildings or industrial processes.
They work by transferring heat from the liquid being chilled to a separate fluid, which is then circulated through a heat exchanger to cool it down.
Chillers can be water-cooled or air-cooled, depending on the app
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posted on 10 May 2020
Type of cement refers to the different varieties of cement available for construction purposes.
There are various types of cement such as Portland cement, rapid hardening cement, white cement, etc.
Each type of cement has specific properties and uses in construction.
For example, Portland cement is commonly used in general construction work, while rapid hardening cement is used in projects requiring quick setting.
White ce...
Wall plastering mix ratio is the proportion of materials used in the plaster mix.
Wall plastering mix ratio typically consists of cement, sand, and water.
A common mix ratio for wall plastering is 1:4, which means 1 part cement to 4 parts sand.
The amount of water added can vary depending on the desired consistency of the plaster mix.
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I applied via Naukri.com and was interviewed in Mar 2021. There was 1 interview round.
Shuttering quantity for slab and beam is calculated based on the area and dimensions of the structure.
Shuttering quantity for slab is calculated by multiplying the area of the slab by the height of the formwork.
Shuttering quantity for beam is calculated by multiplying the length of the beam by the height and width of the formwork.
The quantity of shuttering material required also depends on the type of formwork used, su...
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