Environmental engineers use the principles of engineering, soil science, biology, and chemistry to develop solutions to environmental problems. They are involved in efforts to improve recycling, waste disposal, public health, and control of water and air pollution. They also address global issues, such as safe drinking water, climate change, and sustainability.
Environmental engineers typically do the following:
Environmental engineers conduct hazardous-waste management studies in which they evaluate the significance of the hazard and advise on treating and containing it. They also design municipal water supply and industrial wastewater treatment systems and research the environmental impact of proposed construction projects. Environmental engineers in government develop regulations to prevent mishaps.
Some environmental engineers study ways to minimize the effects of acid rain, global warming, automobile emissions, and ozone depletion. They also collaborate with environmental scientists, planners, hazardous waste technicians, engineers, and other specialists, such as experts in law and business, to address environmental problems and sustainability. For more information, see the job profiles on environmental scientists and specialists, hazardous materials removal workers, lawyers, and urban and regional planners.
Appraisers and assessors of real estate estimate the value of real property--land and the buildings on that land-- before it is sold, mortgaged, taxed, insured, or developed.
Appraisers and assessors of real estate typically do the following:
Appraisers and assessors work in localities that they are familiar with so that they know any environmental or other concerns that may affect the property's value.
Appraisers typically value one property at a time, and they often specialize in a certain type of real estate. For example,
When estimating a property's value, appraisers note unique characteristics of the property and surrounding area, such as a noisy highway nearby. They also consider the condition of a building's foundation and roof or any renovations that may have been done. In addition to photographing the outside of the building to document its condition, appraisers might also photograph a certain room or feature. After visiting the property, the appraiser estimates the value of the property by considering things such as comparable home sales, lease records, location, view, previous appraisals, and income potential. During the entire process, appraisers meticulously record their research, observations, and methods used in calculating the property's value.
Assessors mostly work for local governments and value properties for property tax assessments. Unlike appraisers, who generally focus on one property at a time, assessors often value an entire neighborhood of homes at once by using mass appraisal techniques and computer-assisted mass appraisal systems.
Assessors must be up-to-date on tax assessment procedures. Taxpayers sometimes challenge the assessment because they feel they are being charged too much for property tax. Assessors must be able to defend the accuracy of their property assessments, either to the owner directly or at a public hearing.
Assessors also keep a database of every property in their jurisdiction, identifying the property owner, assessment history, and size of the property, as well as property maps detailing the property distribution of the jurisdiction.
Construction managers plan, coordinate, budget, and supervise construction projects from early development to completion.
Construction managers typically do the following:
Construction managers, often called general contractors or project managers, coordinate and supervise a wide variety of projects, including the building of all types of residential, commercial, and industrial structures, roads, bridges, powerplants, schools, and hospitals. They oversee specialized contractors and other personnel. Construction managers schedule and coordinate all design and construction processes to ensure a productive and safe work environment. They also make sure jobs are completed on time and on budget with the right amount of tools, equipment, and materials. Many managers also are responsible for obtaining necessary permits and licenses. They are often responsible for multiple projects at a time.
Construction managers work closely with other building specialists, such as architects, engineers, and a variety of trade workers, such as stonemasons, electricians, and carpenters. Projects may require specialists in everything from structural metalworking and painting, to landscaping, building roads, installing carpets, and excavating sites. Depending on the project, construction managers also may interact with lawyers and local government officials. For example, when working on city-owned property or municipal buildings, managers sometimes confer with city council members to ensure that all regulations are met.
For projects too large to be managed by one person, such as office buildings and industrial complexes, a construction manager would only be in charge of one part of the project. Each construction manager would oversee a specific construction phase and choose subcontractors to complete it. Construction managers may need to collaborate and coordinate with other construction managers who are responsible for different aspects of the project.
To maximize efficiency and productivity, construction managers often use specialized cost-estimating and planning software to effectively budget the time and money required to complete specific projects. Many managers also use software to determine the best way to get materials to the building site. For more information, see the profile on cost estimators.
Fire inspectors visit and inspect buildings and other structures, such as sports arenas and shopping malls, to search for fire hazards and to ensure that federal, state, and local fire codes are met. They also test and inspect fire protection and fire extinguishing equipment to ensure that it works. Fire investigators determine the origin and cause of fires by searching the surrounding scene and collecting evidence.
Fire inspectors typically do the following:
Fire investigators typically do the following:
Unlike fire inspectors, many fire investigators have police powers and carry a weapon.
Forest fire inspectors and prevention specialists assess fire hazards in both public and residential areas. They look for issues that pose a wildfire risk and recommend ways to reduce the fire hazard. During patrols, they ensure that the public is following fire regulations and report fire conditions to central command.
Cement masons pour, smooth, and finish concrete floors, sidewalks, roads, and curbs. Using a cement mixture, terrazzo workers create durable and decorative surfaces for floors and stairways.
Cement masons typically do the following:
Terrazzo workers typically do the following (in addition to what cement masons do):
Concrete is one of the most common and durable materials used in construction. Once set, concrete--a mixture of cement, sand, gravel, and water--becomes the foundation for everything from decorative patios and floors to huge dams or miles of roadways.
The following are types of cement masons and terrazzo workers:
Cement masons and concrete finishers place and finish concrete. They may color concrete surfaces, expose aggregate (small stones) in walls and sidewalks, or make concrete beams, columns, and panels.
Throughout the process of pouring, leveling, and finishing concrete, cement masons must monitor how the wind, heat, or cold affects the curing of the concrete. They must have a thorough knowledge of the characteristics of concrete so that, by using sight and touch, they can determine what is happening to the concrete and take measures to prevent defects.
Terrazzo workers and finishers create decorative walkways, floors, patios, and panels. Although much of the preliminary work in pouring, leveling, and finishing concrete is similar to that of cement masons, terrazzo workers create more decorative finishes by blending a fine marble chip into the cement, which is often colored. Once the terrazzo is thoroughly set, workers correct any depressions or imperfections with a grinder to create a smooth, uniform finish.