What is the role of roofers in building a house?



A roofer repairs, replaces, and installs roofs on residential homes or commercial buildings. They use a variety of materials such a metal, aluminum, wood, shingles, tiles, slate, and steel. Roofers scale the tops of a property to repair leaky roofs, replace broken tiles, or seal areas to make them watertight. Roofing is physically demanding and requires the stamina to stand, climb, and carefully walk in hot, cold, windy, snowy, or rainy weather. The work that roofers do ensures that buildings are structurally sound and safe for those who enter. Roofers can work on a full- or part-time basis, and many receive weekly salary payments.



Roofing systems may also incorporate plants and landscape materials. A vegetative roof, for example, is typically a waterproof low-slope roof covered by a root barrier and harboring soil, plants, and landscaping materials.



It is becoming increasingly popular to take advantage of solar energy on rooftops. Roofs may incorporate solar reflective systems, which prevent the absorption of energy; solar thermal systems, which absorb energy to heat water; and solar photovoltaic systems, which convert sunlight into electricity. Roofers install some photovoltaic products, such as solar shingles and solar tiles, but solar photovoltaic (PV) installers typically install PV panels. Plumbers and heating, air conditioning, and refrigeration mechanics also may install solar thermal systems.



 



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What is the role of painters in house?



A house painter’s primary responsibility is to paint the interior and exterior surfaces of residential buildings using paint, varnishes, lacquers, sealers, or stains.



Their job description entails executing several pre-painting tasks, including utilizing sandpaper/scraping to strip old paint; performing preparation work for the surfaces and applying filler to cracks and holes using material such as plaster to prepare walls and surfaces before the actual painting tasks is executed.



House painters are also responsible for using power and hand tools to sand surfaces for further finishing and painting to accentuate the work done.



House Painters do not only apply paints but may also be required to apply various wallpaper, vinyl wall fabrics, and all types of coverings or coatings, drywall installation, tape and texture work.



They also ensure that the paint and other materials to be used are of the right color or texture following the specification of the client, and they may also take responsibility for blending paints before carrying out the assigned tasks using various tools.



 



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What is the role of plumbers in house?



Plumbers install and repair pipes that supply water and gas to, as well as carry waste away from, homes and businesses. They also install plumbing fixtures such as bathtubs, sinks, and toilets, and appliances, including dishwashers and washing machines. Experienced plumbers train apprentices and supervise helpers. They work alongside other construction workers.



Most plumbers receive their training by doing an apprenticeship, which combines classroom instruction with paid on-the-job training. Most states also require a license to work independently.



Apprenticeships are sponsored by trade unions and employers. They last from four to five years and include 2,000 hours of on-the-job training and classroom instruction. You will need a high school or equivalency diploma and must be at least 18 years old to be accepted into a program. In the classroom, you will learn about local codes and regulations, blueprint reading, and safety.



Plumbers are required to have a license to work in most states and municipalities in the U.S. In addition to needing two to five years of experience, depending on where the license is issued, you must also pass an exam.



 



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What is the role of electricians in building a house?



Electricians install and maintain all of the electrical and power systems for our homes, businesses, and factories. They install and maintain the wiring and control equipment through which electricity flows. They also install and maintain electrical equipment and machines in factories and a wide range of other businesses.



Electricians generally focus on either construction or maintenance, although many do both. Electricians specializing in construction primarily install wiring systems into factories, businesses, and new homes. Electricians specializing in maintenance fix and upgrade existing electrical systems and repair electrical equipment. All electricians including emergency electricians in Sydney must follow State and local building codes and the National Electrical Code when performing their work.



Electricians usually start their work by reading blueprints - technical diagrams that show the locations of circuits, outlets, load centers, panel boards, and other equipment. After determining where all the wires and components will go, electricians install and connect the wires to circuit breakers, transformers, outlets, or other components and systems.

Electricians in large factories usually do maintenance work that is more complex. These kinds of electricians may repair motors, transformers, generators, and electronic controllers on machine tools and industrial robots. They also advise management as to whether the continued operation of certain equipment could be hazardous. When working with complex electronic devices, they may consult with engineers, engineering technicians, line installers and repairers, or industrial machinery mechanics and maintenance workers.



 



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What is the role of bricklayers in building a house?



Bricklayers lay bricks, pre-cut stone and concrete blocks in mortar. They construct, extend and repair domestic and commercial buildings, and other structures such as foundations, walls, chimneys or decorative masonry work. Bricklaying offers a real sense of achievement.



There are several routes to becoming a bricklayer. You can gain the qualifications you need by doing a college course, an apprenticeship or on the job training.



You should explore these routes to find which one is right for you. Although some options will list qualification requirements, many employers are more interested in people who are enthusiastic, willing to learn and able to follow instructions.



You may need a Construction Skills Certification Scheme (CSCS) card to work on a construction site.



Bricklayers use many tools, including trowels, brick hammers, chisels, levels, and rulers. Helpers do the heavy work, such as carrying materials and mixing the mortar. These helpers are known as "hod carriers." Bricklayers read blueprints and other specifications to be sure their work is accurate. They constantly check for both horizontal and vertical straightness with a mason's level. Masons also build walls out of other materials, such as concrete block. Many masons specialize in one kind of construction material.



 



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What is the role of concrete in building a house?



Concrete is the most widely used construction material in the entire world. Rather than existing as an independent material, concrete is a mix of various materials. These materials include cement, water, fine aggregate, and crushed stones or gravel. Sand and gravel or crushed stones are examples of fine aggregate and coarse aggregate, respectively.



The many cement contractors Delaware folks look to for all their construction needs have one thing in common, they all use concrete. This prevalent use of concrete begs the question, why is concrete such an essential material for construction?



Well, concrete is similar to mortars in both composition and structure. This similarity means concrete works as a binder for the various masonry units in construction, just like any mortar. Unlike ordinary mortar, however, concrete has a wide range of applications. This versatility is as a result of concrete having both fine aggregates and coarse aggregates that are larger. The large size of the coarse aggregates confers strength attributes to concrete, that mortar doesn’t have. This makes it suitable for application in larger and heavier structures. Most mortars have sand as the sole aggregate and are hence weaker than concrete.



 



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What is the role of carpenters in building a house?



Carpenters construct, erect, install, and repair structures and fixtures made from wood and other materials. Carpenters are involved in many different kinds of construction, from the building of highways and bridges to the installation of kitchen cabinets.



Carpenters may do many different carpentry tasks, or they may specialize in one or two. Carpenters who remodel homes and other structures, for example, need a broad range of carpentry skills. As part of a single job, they might frame walls and partitions, put in doors and windows, build stairs, install cabinets and molding, and complete many other tasks. Well-trained carpenters are able to switch from residential building to commercial construction or remodeling work, depending on which offers the best work opportunities.



Carpenters who work for large construction contractors or specialty contractors may perform only a few regular tasks, such as constructing wooden forms for pouring concrete, or erecting scaffolding. Some carpenters build tunnel bracing, or brattices, in underground passageways and mines to control the circulation of air through the passageways and to worksites. Others build concrete forms for tunnel, bridge, or sewer construction projects.



Carpenters employed outside the construction industry perform a variety of installation and maintenance work. They may replace panes of glass, ceiling tiles, and doors, as well as repair desks, cabinets, and other furniture. Depending on the employer, carpenters install partitions, doors, and windows; change locks; and repair broken furniture. In manufacturing firms, carpenters may assist in moving or installing machinery.



 



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What is the role of bulldozer operators in building a house?



A Bulldozer Operator is in charge of a bulldozer—a special tractor outfitted in front with a broad upright blade that’s used for clearing and smoothing ground. Capable of pushing boulders, soil, clay, sand, and vegetation, and of demolishing walls, sheds, and even small houses, bulldozers are ideal for use at construction sites, battlefields, mines, quarries, farms, and disaster zones.



Whatever the job—tearing down an old garage or clearing a construction site—your routine as a Bulldozer Operator involves showing up at the job site early, inspecting and cleaning the equipment, then driving, digging, and demolishing under the direction of your Supervisor, who is usually a Construction Foreman.



 It also means maintaining the equipment: It’s your job to fix the bulldozer when it breaks, or send it to a Bulldozer Mechanic, and to secure and store it at the end of every day.



 



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What is the role of architect?



Architects create designs for new construction projects, alterations and redevelopments. They use their specialist construction knowledge and high-level drawing skills to design buildings that are functional, safe, sustainable and aesthetically pleasing.



Architects stay involved throughout the construction process, adapting their plans according to budget constraints, environmental factors or client needs. As such, they operate as part of an overall project design team, working closely with a range of construction professionals from quantity surveyors to building services engineers.



‘Architect’ is a protected title that only qualified professionals registered with the Architect’s Registration Board (ARB) may use. There are two ways in which school leavers and graduates can qualify to become an architect:




  • through the traditional route – going to university and interspersing two degrees with practical experience

  • through a degree apprenticeship route.



 



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How is technology useful?



As scientists learn more from technology, they are able to improve some of the machines we already use. Car companies hire safety engineers to make cars safer.



Doctors use technology to help people live longer and better lives. With technology, scientists have found ways to make machines that do the work of body parts, like artificial limbs. Technology may even find a way to replace sight by using artificial eyes.



Technology also improves the quality of life for people with disabilities. For example, hearing-impaired people can read phone messages and type responses. New computer programs convert speech into commands so those with physical disabilities can now use computers.



People expect technology to keep improving life. But some technology can be harmful. Scientists and engineers did not realize this for a long time. For example, machines are run on fuel.



Burning fuel pollutes the air. A new kind of engineering helps protect the earth from technology-and it uses technology to do it! It's called environmental engineering. Engineers in this area of research use radar to track pollution. They work on finding fuels that run machines with less pollution. They also find ways to clean up and fix the pollution technology has already made.



Today some artificial limbs-arms and legs-can move and bend like real limbs. When our muscles contract, they send out electric currents. A disk inside the artificial arm or leg picks up this current. This current controls an electric motor in the artificial limb, making it bend or move.



Airbags in the front of a car protect adult passengers in the front seat in case of an accident. If a crash occurs at about 19 kilometres per hour or faster, the airbag fills with a gas called nitrogen. The blown-up airbag cushions the passengers like a big pillow, keeping them from hitting the dashboard and windscreen.



 



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How does scraper box machine work?



To build new roads, workers move huge amounts of earth and rock. They flatten high ground and fill in low places.



A machine called a scraper box is used to move earth from one place to another. It is a huge open box with a slot at the bottom. The box is slung between two diesel engines. Its huge rubber tyres are over 3 metres high.



The engine roars. The scraper lumbers over the ground. A blade at the front bites into the ground at an angle. In seconds, over 30 tonnes of earth are scraped into the box.



Powerful shovels also dig up the earth. Each scoop is as big as a bus.



The scraper box and shovels dump their loads, and bulldozers push the piles to fill in low spots. More rocks are rammed into the ground to make a solid base for the road.



Grading machines carefully level off the top layer of small stones. Another machine lays asphalt-a mixture of sand, small rocks, and tar. Finally, road rollers press the surface absolutely flat.



 



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