CIVIL ENGG:Jobs, Gate, IES etc: April 2021

What is the State of the U.S. Infrastructure and how does it Affect the Economy?

The United States’ economy largely depends on its vast infrastructure network, ranging from bridges and roads to airports, ports, and freight rail. Not only does it drive growth and jobs but also facilitates enhanced connectivity and global competitiveness. The economists argue that the vigorous investments made in the 1960s helped the American economy flourish. However, […]

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How AI Changed the Construction Industry During Covid-19

The Covid-19 pandemic is unarguably a grave misfortune on numerous levels. From the high death toll to the long-term worldwide GDP impact, this health emergency will remain a source of bitter memories for quite a long time. While the pandemic has brought many changes to our day-to-day lives, it has also transformed the way all […]

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Chilled Beams: Ceiling-Mounted Heat Exchangers

A chilled beam is an air distribution device with an integral coil designed to heat or cool large buildings. Chilled beams are made up of convective coils placed in the ceiling’s thermal zone to provide sensible cooling and heating. They can either have two pipes (cooling only) or four pipes (heating and cooling). The coil […]

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How does a Wastewater Treatment Plant Work?

A wastewater treatment plant treats sewage water from various sources and makes it reusable. It comprises several processes that address specific needs for wastewater treatment. The treatment system treats the sewage from domestic use, rainwater, runoff, and other pollutants that go down the street gutters. The sewage also includes water from agricultural and industrial sources. […]

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Solar Roadways: Purpose, Construction, and Applications

A solar roadway is a street surface that produces electricity. It consists of a glass layer, an electronic layer, and a base plate layer. The construction process involves furnishing and wiring the base plate, placement and connection of solar photovoltaic cells with the previously placed layers, and finally, the positioning of the glass layer. A […]

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5 Major Types of Valves in Plumbing System

Valves are mechanical devices used to control, direct, and regulate the flow of water by opening, closing, or partially obstructing the flow. They can be made up of different materials like bronze, PVC, brass, etc. Valves are employed in residential and commercial buildings, water supply systems, wastewater treatment plants, and chemical plants to direct the […]

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Column Slightly Inclined on 1st Floor of the building

I work in IT and have no background information on construction or civil engineering concepts. I have recently purchased an apartment on the 3rd out of the 5-floor building under construction. Currently, the construction is happening for the 3rd slab of the building. I have noticed that on the first floor, there is only ONE […]

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What are the types of cement mortar ratio?

The post What are the types of cement mortar ratio? appeared first on The Constructor.

How to find the rebar spacing when not mentioned in the drawing?

The post How to find the rebar spacing when not mentioned in the drawing? appeared first on The Constructor.

Concrete strength results

I have recently made up 3 x 150mm concrete cubes using the mix for reinforced concrete work that being (1:2.5:3.5). I used the same water to cement ratio you suggested that is 0.57. The cubes were left to cure in the laboratory and not within a tank of water. I tested one of the cubes […]

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Is the quality of welding (shown in the picture) acceptable in column lapping?

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Is it safe not to build a colunm at an intersection of two beams?

Is it safe not to build a column at an intersection of two beams?

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What are the tests conducted on fly ash before using it as a replacement for cement?

The post What are the tests conducted on fly ash before using it as a replacement for cement? appeared first on The Constructor.

Explain the operating principle of the rebound hammer?

The post Explain the operating principle of the rebound hammer? appeared first on The Constructor.

What is the effect on strength of concrete if an RMC transit mixer is halted for 3 hours?

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In the case of the Multistorey Building, is there is any change in the design of slab and beam for different floors?

The post In the case of the Multistorey Building, is there is any change in the design of slab and beam for different floors? appeared first on The Constructor.

Name the best book for fire safety in high-rise buildings?

The post Name the best book for fire safety in high-rise buildings? appeared first on The Constructor.

What are the different types of roller shutters and their uses?

The post What are the different types of roller shutters and their uses? appeared first on The Constructor.

What are the construction activities involved in building construction?

The post What are the construction activities involved in building construction? appeared first on The Constructor.

Name of equipment used to measure creep?

The post Name of equipment used to measure creep? appeared first on The Constructor.

How to calculate the surface area of the rebar?

The post How to calculate the surface area of the rebar? appeared first on The Constructor.

Bricklaying Robots in Construction

Bricks are one of the oldest building materials, dating back to 7000 BC for the sun-dried types and 3500 BC for the first kiln-fired blocks. The traditional bricklaying process involves spreading mortar, positioning a brick, and smoothing out excess mortar with a trowel, and unfortunately, this process hasn’t undergone much advancement to date. Moreover, low […]

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Research: Electrifying Concrete with Nanocarbon Material

Researchers from MIT Concrete Sustainability Hub (CSHub) are working in collaboration with the French National Center for Scientific Research (CNRS) towards making concrete more sustainable. They plan to do so by electrifying concrete, which would allow its application for several new purposes, ranging from energy storage to self-heating. Their approach relies on the controlled addition […]

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How to Design Axially Loaded Circular RC Columns as per ACI 318-19? | Example Included

The design of axially loaded circular columns is mainly governed by the column’s cross-section and its material properties. This is because the load acts at the center of the column, and the entire cross-sectional area of the column is in compression. An entire column subjected to purely compression rarely exists in practice as the perfect […]

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What is the load-carrying strength of a normal glass?

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The Great Pyramid of Giza: Construction of the Tallest Pyramid in the World

The Great Pyramid of Giza, also known as the Pyramid of Khufu, was an incredible architectural achievement of the time and is a part of the three-pyramid structures of the Giza Pyramid Complex. The construction of the pyramid started in 2680 BC and was completed in 2560 BC during the 4th dynasty rule of Egyptian […]

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Sunken Slabs: Construction and Applications

A sunken slab or sunk slab is provided below the normal floor level in bathrooms, toilets, and laundry areas, where pipes or drainage systems are laid. It is constructed with the purpose of concealing all the pipes below the floor level to maintain the aesthetic appeal of the space. The slab is usually placed at […]

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Will Biden’s $2 Trillion American Jobs Plan Rebuild US Infrastructure?

President Joe Biden announced the $2 trillion American Jobs Plan on March 31, 2021, with the aim to revamp national infrastructure, create jobs, and fight climate change. This piece analyzes how the bill would impact the US construction industry. Spanning across a period of eight years, the proposal will begin with enhancing physical infrastructure such […]

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Elon Musk’s Boring Company Completes its First Loop

Elon Musk’s underground construction start-up, The Boring Company, has completed its tunnel loop under the Las Vegas Convention Centre (LVCC). With a design that is capable of transporting 4,400 riders per hour, the project is their first commercial endeavor. The loop is a three-station transit system consisting of 2.7 km (1.7 miles) of tunnels that […]

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How to Fix Roof Leakage?

How to fix roof leakage? What is the cost incurred for fixing?

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Royal Gorge Bridge: Structural Elements of the Highest Bridge in the US

The Royal Gorge Bridge is situated in the Rocky Mountains close to Canon City in Colorado, US. It was constructed across the Arkansas River and Royal Gorge in 1929 and was the highest bridge in the world at that time. The bridge was constructed at the core of an amusement park and was planned as […]

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What is Onsite Wastewater Treatment System (OWTS)?

Onsite wastewater treatment system (OWTS) is a privately owned and maintained sewage disposal system that treats wastewater and produces disinfected effluent, which is not harmful to humans and the environment. In this system, certain mechanical components and natural processes perform the collection and treatment of sewage. The system plays a vital role in removing scum, […]

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Rongjiang Bridge: The World’s Longest Bridge of Rigid Girder and Flexible Arch

The Rongjiang Bridge is a part of the Xiamen-Shenzhen high-speed railway route constructed in the Jieyang City of Guangdong Province, China. It is the longest bridge in the world with a main span of 660 m between two flexible steel arches and rigid girders. Rongjiang Bridge is considered the most challenging long-span bridge that has […]

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Qinghai–Tibet Railway: The Longest and Highest Highland Railway in the World

The Qinghai–Tibet Railway is a 1,956 km long railway network located between Golmud and Lhasa in China. It is also known as the “heavenly road” as it is the longest and highest highland rail route in the world. The construction of the railway line began on 29th June 2001, and it became operational on 2nd […]

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Important Types of Wastewater Treatment Systems

Wastewater treatment is the process of treating contaminated water or sewage to an effluent that can be safely dispersed back to the environment or reused for various purposes. The final product after treatment must not cause any undesirable effects on public health and the environment. The wastewater treatment plants or systems can be classified into […]

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Gotthard Base Tunnel: Construction Features of the World’s Longest Tunnel

The Swiss government was exploring ways to lay a railway line through the Alps for a long time. The idea was materialized in the year 1995 with the plan to construct the New Rail Link through the Alps (NRLA), a high-speed railway link that connected southern europe with northern europe. The 57 km-long Gotthard Base […]

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San Marco Bell Tower: Foundation Reconstruction of the Tallest Structure in Venice

San Marco Bell Tower, the tallest structure in Venice, was first constructed around 800 years ago. Located in Piazza Public Square, the tower is among the most distinct symbols of the city. Venetians call the tower “il paron di casa” (the landlord, the master of the house) as it was constructed to guard the dock […]

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In what case is a Shear Key provided in Foundation?

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What is Big Data in Construction?

The construction industry has been generating a great amount of data that comes from completed construction projects, designs, machinery, supply chain, accounting departments, and the workers at job sites. If this data is stored and studied for patterns and aberrations, it is possible to avoid “unforeseeable” complexities frequently encountered in projects. Big data in construction […]

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Chenab Bridge: Construction of the World’s Highest Rail Bridge

The Chenab Bridge is a 1315 m long, steel arch railway bridge under construction in Jammu and Kashmir, India. The bridge is a part of the Jammu-Udhampur-Srinagar-Baramulla Rail Line (JUSBRL) project being undertaken by the Indian Railways. The Chenab bridge will have a structural height of 359 m from the riverbed level, the highest in the world. […]

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Delhi Noida International Airport set to be India’s Greenest Airport

India is all set to begin the construction of its greenest airport on the outskirts of Greater Noida in the state of Uttar Pradesh. The Delhi Noida International Airport (DNIA) terminal will aim to achieve a LEED Gold standard certification by incorporating a carbon-neutral design. The project is being developed by the Yamuna International Airport Private […]

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Construction Technologies for Erection of Balanced Cantilever Bridge

A balanced cantilever bridge is mostly constructed for cast-in-place and precast segmental bridges. While cast-in-place segmental bridges are constructed for shorter bridges with longer spans, precast segmental bridges are constructed for large-scale bridges with a shorter span (50-120 m). There are two technologies used to construct the cast-in-place balanced cantilever bridge called form travelers and […]

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Exposure Conditions Affecting the Durability of Concrete

Different exposure conditions are established based on the degree of severity of the environmental conditions of the area in which the structure is located. Various codes such as Indian Standard, American Concrete Institute, and European Standard have set similar exposure categories for reinforced concrete structures. The exposure conditions govern durability requirements, materials selection and proportion, […]

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Sway and Non-sway Frames: How to Distinguish Between Them?

A frame is considered to be non-sway (braced) if it is sufficiently braced by lateral bracing elements like structural walls. On the other hand, frames that provide lateral resistance only through columns are considered to be sway frames (unbraced). ACI 318-19 can be used as a reference to distinguish between sway and non-sway frames. It […]

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