Surveying and mapping technicians help determine, describe, and record geographic areas or features. They are usually the leading assistant to the professional surveyor, civil engineer, and mapmaker (See “Surveyors”). They operate modern surveying and mapping instruments and may participate in other operations. Technicians must have a basic knowledge of the current practices and legal implications of surveys to establish and record property size, shape, topography, and boundaries. They often supervise other assistants during routine surveying conducted within the bounds established by a professional surveyor. There are approximately 63,910 surveying and mapping technicians working in the United States.
History of Surveying and Mapping Technician Career
From ancient times, people have needed to define their property boundaries. Marking established areas of individual or group ownership was a basis for the development of early civilizations. Landholding became important in ancient Egypt, and with the development of hieroglyphics, people were able to keep a record of their holdings. Eventually, nations found it necessary not only to mark property boundaries but also to record principal routes of commerce and transportation. For example, records of the Babylonians tell of their canals and irrigation ditches. The Romans surveyed and mapped their empire’s principal roads. In the early days of colonial exploration, surveyors and their technical helpers were among the first and most-needed workers. They established new land ownership by surveying and filing claims. Since then, precise and accurate geographical measurements have been needed to determine the location of a highway, the site of a building, the right-of-way for drainage ditches, telephone, and power lines, and for the charting of unexplored land, bodies of water, and underground mines.
Early surveying processes required at least two people. A technical scientist served as the leader, or professional surveyor. This scientist was assisted by helpers to make measurements with chains, tapes, and wheel rotations, where each rotation accounted for a known length of distance. The helpers held rods marked for location purposes and placed other markers to define important points.
As measuring instruments have become more complex, the speed, scope, and accuracy of surveying have improved. Developments in surveying and mapping technology have made great changes in the planning and construction of highway systems and structures of all kinds. For roadway route selection and design, technicians increasingly use photogrammetry, which uses plotting machines to scribe routes from aerial photographs of rural or urban areas. Route data obtained by photogrammetry may then be processed through computers to calculate land acquisition, grading, and construction costs. Photogrammetry is faster and far more accurate than former methods. In addition, new electronic distance-measuring devices have brought surveying to a higher level of precision. Technicians can measure distance more quickly, accurately, and economically than was possible with tapes, rods, and chains.
In addition to photogrammetry, the use of computers in data processing has extended surveying and mapping careers past the earth’s surface. Technicians now help to make detailed maps of ocean floors and the moon. Every rocket fired from the Kennedy Space Center is tracked electronically to determine if it is on course through the use of maps made by surveyors. The technological complexity of such undertakings allows surveyors to delegate more tasks than ever to technicians.
The Job of Surveying and Mapping Technicians
As essential assistants to civil engineers, surveyors, and mapmakers, surveying and mapping technicians are usually the first to be involved in any job that requires precise plotting. This includes highways, airports, housing developments, mines, dams, bridges, and buildings of all kinds.
The surveying and mapping technician is a key worker in field parties and major surveying projects and is often assigned the position of chief instrument worker under the surveyor’s supervision. Technicians use a variety of surveying instruments, including the theodolite, transit, level, and other electronic equipment, to measure distances or locate a position. Technicians may be rod workers, using level rods or range poles to make elevation and distance measurements. They may also be chain workers, measuring shorter distances using a surveying chain or a metal tape. During the survey, it is important to accurately record all readings and keep orderly field notes to check for accuracy.
Surveying and mapping technicians may specialize if they join a firm that focuses on one or more particular types of surveying. In a firm that specializes in land surveying, technicians are highly skilled in technical measuring and tasks related to establishing township, property, and other tract-of-land boundary lines. They help the professional surveyor with maps, notes, and title deeds. They help survey the land, check the accuracy of existing records, and prepare legal documents such as deeds and leases.
Similarly, technicians who work for highway, pipeline, railway, or power line surveying firms help to establish grades, lines, and other points of reference for construction projects. This survey information provides the exact locations for engineering design and construction work.
Technicians who work for geodetic surveyors help take measurements of large masses of land, sea, or space. These measurements must take into account the curvature of Earth and its geophysical characteristics. Their findings set major points of reference for smaller land surveys, determining national boundaries, and preparing maps.
Technicians may also specialize in hydrographic surveying, measuring harbors, rivers, and other bodies of water. These surveys are needed to design navigation systems, prepare nautical maps and charts, establish property boundaries, and plan for breakwaters, levees, dams, locks, piers, and bridges.
Mining surveying technicians are usually on the geological staffs of either mining companies or exploration companies. In recent years, costly new surveying instruments have changed the way they do their jobs. Using highly technical machinery, technicians can map underground geology, take samples, locate diamond drill holes, log drill cores, and map geological data derived from boreholes. They also map data on mine plans and diagrams and help the geologist determine ore reserves. In the search for new mines, technicians operate delicate instruments to obtain data on variations in Earth’s magnetic field, its conductivity, and gravity. They use their data to map the boundaries of areas for potential further exploration.
Surveying and mapping technicians may find topographical surveys to be interesting and challenging work. These surveys determine the contours of the land and indicate such features as mountains, lakes, rivers, forests, roads, farms, buildings, and other distinguishable landmarks. In topographical surveying, technicians help take aerial or land photographs with photogrammetric equipment installed in an airplane or ground station that can take pictures of large areas. This method is widely used to measure farmland planted with certain crops and to verify crop average allotments under government production planning quotas.
A large number of survey technicians are employed in construction work. Technicians are needed from start to finish on any job. They check the construction of a structure for size, height, depth, level, and form specifications. They also use measurements to locate the critical construction points as specified by design plans, such as corners of buildings, foundation points, center points for columns, walls, and other features, floor or ceiling levels, and other features that require precise measurements and location.
Technological advances such as the Global Positioning System (GPS) and Geographic Information Systems (GIS) have revolutionized surveying and mapping work. Using these systems, surveying teams can track points on the Earth with radio signals transmitted from satellites and store this information in computer databases.
Surveying and Mapping Technician Career Requirements
If you are interested in becoming a surveying and mapping technician, take mathematics courses, such as algebra, geometry, and trigonometry, as well as mechanical drawing in high school. Physics, chemistry, and biology are other valuable classes that will help you gain laboratory experience. Reading, writing, and comprehension skills as well as knowledge of computers are also vital in surveying and mapping, so English and computer science courses are also highly recommended.
Though not required to enter the field, graduates of accredited postsecondary training programs for surveying, photogrammetry, and mapping are in the best position to become surveying and mapping technicians. Postsecondary training is available from institutional programs and correspondence schools. These demanding technical programs generally last two years with a possible field study in the summer. First-year courses include English, composition, drafting, applied mathematics, surveying and measurements, construction materials and methods, applied physics, statistics, and computer applications. Second-year courses cover subjects such as technical physics, advanced surveying, photogrammetry and mapping, soils and foundations, technical reporting, legal issues, and transportation and environmental engineering. Contact the American Congress on Surveying and Mapping (ACSM) for a list of accredited programs.
With additional experience and study, technicians can specialize in geodesy, topography, hydrography, or photogrammetry. Many graduates of two-year programs later pursue a bachelor’s degree in surveying, engineering, or geomatics.
Certification or Licensing
Unlike professional land surveyors, there are no certification or licensing requirements for becoming a surveying and mapping technician. However, technicians who seek government employment must pass a civil service examination.
Many employers prefer certified technicians for promotions into higher positions with more responsibility. ACSM offers the voluntary survey technician certification at four levels. With each level, the technician must have more experience and pass progressively challenging examinations. If the technician hopes one day to work as a surveyor, he or she must be specially certified to work in his or her state.
To be a successful surveying and mapping technician, you must be patient, orderly, systematic, accurate, and objective in your work. You must be willing to work cooperatively and have the ability to think and plan ahead. Because of the increasing technical nature of their work, you must have computer skills to be able to use highly complex equipment such as GPS and GIS technology.
Exploring Surveying and Mapping Technician Career
One of the best opportunities for experience is to work part time or during your summer vacation for a construction firm or a company involved in survey work. Even if the job does not involve direct contact with survey crews, you may be able to observe their work and converse with them to discover more about their daily activities. Another possibility is to work for a government agency overseeing land use. The Bureau of Land Management, for example, has employment opportunities for students who qualify, as well as many volunteer positions. The Forest Service also offers temporary positions for students.
There are approximately 63,910 surveying and mapping technicians working in the United States. Almost two-thirds of technicians find work with engineering or architectural service firms. The federal government also employs a number of technicians to work for the U.S. Geological Survey, the Bureau of Land Management, the National Oceanic and Atmospheric Administration, the national Imagery and Mapping Agency, and the Forest Service. State and local governments also hire surveying and mapping technicians to work for highway departments and urban planning agencies. Construction firms and oil, gas, and mining companies also hire technicians.
If you plan on entering surveying straight from high school, you may first work as an apprentice. Through on-the-job training and some classroom work, apprentices build up their skills and knowledge of the trade to eventually become surveying and mapping technicians.
If you plan to attend a technical institute or four-year college, check out your school’s placement service for help in arranging examinations or interviews. Employers of surveying technicians often send recruiters to schools before graduation and arrange to employ promising graduates. Some community or technical colleges have work-study programs that provide cooperative part-time or summer work for pay. Employers involved with these programs often hire students full time after graduation.
Finally, many cities have employment agencies that specialize in placing technical workers in positions in surveying, mapping, construction, mining, and related fields. Check your local newspaper, telephone book, or surf the Web to see if your town offers these services.
Possibilities for advancement are linked to levels of formal education and experience. As technicians gain experience and technical knowledge, they can advance to positions of greater responsibility and eventually work as chief surveyor. To advance into this position, technicians will most likely need a two- or four-year degree in surveying and many years of experience. Also, all 50 states require surveyors to be licensed, requiring varying amounts of experience, schooling, and examinations.
Regardless of the level of advancement, all surveying and mapping technicians must continue studying to keep up with the technological developments in their field. Technological advances in computers, lasers, and microcomputers will continue to change job requirements. Studying to keep up with changes combined with progressive experience gained on the job will increase the technician’s opportunity for advancement.
According to the U.S. Department of Labor, the 2005 median hourly salary for all surveying and mapping technicians, regardless of the industry, was $15.04 (amounting to $31,290 for full-time work). The lowest- paid 10 percent earned less than $9.28 ($19,300 for full-time work), and the highest-paid 10 percent earned over $25.00 an hour (for $52,000 annually for full-time work). Technicians working for the public sector in federal, state, and local governments generally earn more per hour than those working in the private sector for engineering and architectural services. In 2005, surveying and mapping technicians working for the federal government made an average of $41,720 per year.
Surveying and mapping technicians usually work about 40 hours a week except when overtime is necessary. The peak work period for many kinds of surveying work is during the summer months when weather conditions are most favorable. However, surveying crews are exposed to all types of weather conditions.
Some survey projects involve certain hazards depending upon the region and the climate as well as local plant and animal life. Field survey crews may encounter snakes and poison ivy. They are subject to heat exhaustion, sunburn, and frostbite. Some projects, particularly those being conducted near construction projects or busy highways, impose dangers of injury from cars and flying debris. Unless survey technicians are employed for office assignments, their work location changes from survey to survey. Some assignments may require technicians to be away from home for varying periods of time.
While on the job, technicians who supervise other workers must take special care to observe good safety practices. Construction and mining workplaces usually require hard hats, special clothing, and protective shoes.
Surveying and Mapping Technician Career Outlook
Surveying and mapping technicians are expected to enjoy worse job prospects than other workers in the surveying field, because of increased use of new technologies used in surveying and mapping such as GPS and GIS. According to the Occupational Outlook Handbook, however, employment is expected to grow about as fast as the average for all occupations through 2014.
One of the factors that is expected to increase the demand for surveying services, and therefore surveying technicians, is growth in urban and suburban areas. New streets, homes, shopping centers, schools, and gas and water lines will require property and boundary line surveys. Other factors are the continuing state and federal highway improvement programs and the increasing number of urban redevelopment programs. The expansion of industrial and business firms and the relocation of some firms in large undeveloped areas are also expected to create a need for surveying services.
The need to replace workers who have either retired or transferred to other occupations will also provide opportunities. In general, technicians with more education and skill training will have more job options.
For More Information:
- Accreditation Board for Engineering and Technology Inc.
- National Society of Professional Surveyors
- Bureau of Land Management