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Construction equipment operators drive, maneuver, or control the heavy machinery used to construct roads, bridges, buildings, and other structures.

Construction equipment operators typically do the following:

• Check to make sure that equipment functions properly
• Clean, maintain, and make basic repairs to equipment
• Report malfunctions to supervisors
• Move levers, push pedals, or turn valves to activate power equipment
• Drive and maneuver equipment
• Coordinate machine actions with crew members in response to hand or audio signals
• Ensure that safety standards are met

Construction equipment operators use machinery to move construction materials, earth, and other heavy materials at construction sites and mines. They operate equipment that clears and grades land to prepare it for construction of roads, bridges, and buildings, as well as airport runways, power generation facilities, dams, levees, and other structures.

The following are types of construction equipment operators:

Operating engineers and other construction equipment operators work with one or several types of power construction equipment. They may operate excavation and loading machines equipped with scoops, shovels, or buckets that dig sand, gravel, earth, or similar materials. In addition to operating the familiar bulldozer, they operate trench excavators, road graders, and similar equipment. Sometimes, they may drive and control industrial trucks or tractors equipped with forklifts or booms for lifting materials. They also may operate and maintain air compressors, pumps, and other power equipment at construction sites.

Paving and surfacing equipment operators control the machines that spread and level asphalt or spread and smooth concrete for roadways or other structures. Paving and surfacing equipment operators may specialize further:

• Asphalt spreader operators turn valves to regulate the temperature of asphalt and the flow of asphalt onto the roadbed. They must ensure that the machine distributes the paving material evenly, and they also must ensure that there is a constant flow of asphalt into the hopper.
• Concrete paving machine operators control levers and turn handwheels to move attachments that spread, vibrate, and level wet concrete. They must watch the surface of the concrete carefully to identify low spots into which workers must add concrete.
• Tamping equipment operators use machines that compact earth and other fill materials for roadbeds or other construction sites. They also may operate machines with interchangeable hammers to cut or break up old pavement and drive guardrail posts into the ground.

Piledriver operators use large machines mounted on skids, barges, or cranes to hammer piles into the ground. Piles are long, heavy beams of wood or steel driven into the ground to support retaining walls, bridges, piers, or building foundations. Some piledriver operators work on offshore oil rigs.

Some workers operate cranes to move construction materials. For more information on these workers, see the profile on material moving machine operators.

Logging workers harvest thousands of acres of forests each year. The timber they harvest provides the raw material for countless consumer and industrial products.

Logging workers typically do the following:

• Cut down trees with hand-held power chain saws or mobile felling machines
• Fasten chains around logs to be dragged by tractors
• Drag logs to the landing or deck area
• Separate logs by species and type of wood and load them onto trucks
• Drive and maneuver tractors and tree harvesters to shear trees and cut logs into desired lengths
• Drive tractors to build or repair logging roads
• Grade logs according to characteristics such as knot size and straightness
• Inspect equipment for safety before using it and do necessary basic maintenance tasks
• Calculate total board feet, cordage, or other wood measurement units, using conversion tables

Timber-cutting and logging are done by a logging crew. The following are some types of logging workers:

Fallers cut down trees with hand-held power chain saws or mobile felling machines.

Buckers trim the tops and branches of felled trees and buck (cut) the logs into specific lengths.

Choke setters fasten chokers (steel cables or chains) around logs to be skidded (dragged) by tractors or forwarded by the cable-yarding system to the landing or deck area, where the logs are separated by species and type of product, such as pulpwood, saw logs, or veneer logs, and loaded onto trucks.

Rigging slingers and chasers set up and dismantle the cables and guy wires of the yarding system.

Log sorters, markers, movers, and chippers sort, mark, and move logs, based on species, size, and ownership, and tend machines that chip up logs.

Logging equipment operators use tree harvesters to fell trees, shear tree limbs off, and cut trees into desired lengths. They drive tractors and operate self-propelled machines called skidders or forwarders, which drag or transport logs to a loading area.

Log graders and scalers inspect logs for defects and measure the logs to determine their volume. They estimate the value of logs or pulpwood. These workers often use hand-held data collection devices to enter data about trees. The data are later downloaded to a computer.

A typical crew might consist of

• one or two tree fallers or one logging equipment operator with a tree harvester to cut down trees
• one bucker to cut logs
• two logging equipment operators with tractors to drag cut trees to the loading deck
• one logging equipment operator to load the logs onto trucks.

Landscape architects plan and design land areas for parks, recreational facilities, highways, airports, and other properties. Projects may include subdivisions and commercial, industrial, and residential sites.

Landscape architects typically do the following:

• Confer with clients, engineers, and building architects to understand a project
• Prepare site plans, specifications, and cost estimates
• Coordinate the arrangement of existing and proposed land features and structures
• Prepare graphic representations and drawings of proposed plans and designs
• Analyze environmental reports and data on land conditions, such as drainage
• Inspect landscape work to ensure that it adheres to original plans
• Approve the quality of work that others do
• Seek new work through marketing or by giving presentations

People enjoy attractively designed gardens, public parks, playgrounds, residential areas, college campuses, and golf courses. Landscape architects design these areas so that they are not only functional but also beautiful and harmonious with the natural environment.

Landscape architects plan the locations of buildings, roads, and walkways. They also plan where to plant flowers, shrubs, and trees. Landscape architects design and plan the restoration of natural places disturbed by humans, such as wetlands, stream corridors, and mined areas.

Many landscape architects specialize in a particular area, such as beautifying or otherwise improving streets and highways, waterfronts, parks and playgrounds, or shopping centers.

Increasingly, landscape architects are working in environmental remediation, such as preserving and restoring wetlands or managing storm-water runoff in new developments. They are also increasingly playing a role in preserving and restoring historic landscapes.

Landscape architects who work for government agencies do design sites and landscapes for government buildings, parks, and other public lands, as well as plan for landscapes and recreation areas in national parks and forests.

In addition, they prepare environmental impact statements and studies on environmental issues, such as planning for use of public lands.

Grounds maintenance workers provide a pleasant outdoor environment by ensuring that the grounds of houses, businesses, and parks are attractive, orderly, and healthy.

Grounds maintenance workers typically do the following:

• Mow, edge, and fertilize lawns
• Weed and mulch landscapes
• Trim hedges, shrubs, and small trees
• Remove dead, damaged, or unwanted trees
• Plant flowers, trees, and shrubs
• Water lawns, landscapes, and gardens

Grounds maintenance workers do a variety of tasks to achieve a pleasant and functional outdoor environment. They also care for indoor gardens and plantings in commercial and public facilities, such as malls, hotels, and botanical gardens.

The following are types of grounds maintenance workers:

Landscaping workers create new outdoor spaces or upgrade existing ones by planting trees, flowers, and shrubs. They also trim, fertilize, mulch, and water plants. Some grade and install lawns or construct hardscapes such as walkways, patios, and decks. Others help install lighting or sprinkler systems. Landscaping workers work in a variety of residential and commercial settings, such as homes, apartment buildings, office buildings, shopping malls, and hotels and motels.

Groundskeeping workers, also called groundskeepers, maintain existing grounds. They care for plants and trees, rake and mulch leaves, and clear snow from walkways. They work on athletic fields, golf courses, cemeteries, university campuses, and parks, as well as in many of the same settings as landscaping workers. They also see to the proper upkeep and repair of sidewalks, parking lots, groundskeeping equipment, fountains, fences, planters, and benches.

Groundskeeping workers who care for athletic fields keep natural and artificial turf in top condition, mark out boundaries, and paint turf with team logos and names before events. They mow, water, fertilize, and aerate the fields regularly. They must make sure that the underlying soil on fields with natural turf has the required composition to allow proper drainage and to support the grasses used on the field. In sports venues, they vacuum and disinfect synthetic turf after its use to prevent the growth of harmful bacteria, and they remove the turf and replace the cushioning pad periodically.

Groundskeepers in parks and recreation facilities care for lawns, trees, and shrubs; maintain playgrounds; clean buildings; and keep parking lots, picnic areas, and other public spaces free of litter. They also may erect and dismantle snow fences, and maintain swimming pools. These workers inspect buildings and equipment, make needed repairs, and keep everything freshly painted.

Some groundskeepers specialize in caring for cemeteries and memorial gardens. They dig graves to specified depths, generally using a backhoe. They mow grass regularly, apply fertilizers and other chemicals, prune shrubs and trees, plant flowers, and remove debris from graves.

Greenskeepers maintain golf courses. Their work is similar to that of groundskeepers, but they also periodically relocate holes on putting greens and maintain benches and tee markers along the course. In addition, greenskeepers keep canopies, benches, and tee markers repaired and freshly painted.

Pesticide handlers, sprayers, and applicators apply herbicides, fungicides, or insecticides on plants or the soil to prevent or control weeds, insects, and diseases. Those who work for chemical lawn or tree service firms are more specialized, inspecting lawns for problems and applying fertilizers, pesticides, and other chemicals to stimulate growth and prevent or control weeds, diseases, or insect infestations.

Tree trimmers and pruners, also called arborists, cut away dead or excess branches from trees or shrubs to clear utility lines, roads, and sidewalks. Although many workers strive to improve the appearance and health of trees and plants, some specialize in diagnosing and treating tree diseases. Others specialize in pruning, trimming, and shaping ornamental trees and shrubs. Tree trimmers and pruners use chainsaws, chippers, and stump grinders while on the job. When trimming near power lines, they usually work on truck-mounted lifts and use power pruners.

Surveyors establish land, airspace, and water boundaries. They measure the Earth's surface to collect data that are used to draw maps, determine the shape and contour of parcels of land, and set property lines and boundaries. They also define airspace for airports and measure construction and mining sites. Surveyors work with civil engineers, landscape architects, and urban and regional planners to develop comprehensive design documents.

Surveyors typically do the following:

• Measure distances, directions, and angles between points on, above, and below the Earth's surface
• Select known reference points and then determine the exact location of important features in the survey area using special equipment
• Establish official land and water boundaries
• Research land records and other sources of information affecting properties
• Look for evidence of previous boundaries to determine where boundary lines are
• Travel to locations to measure distances and directions between points
• Record the results of surveying and verify the accuracy of data
• Prepare plots, maps, and reports
• Work with cartographers (mapmakers), architects, construction managers, and others
• Present findings to clients, government agencies, and others
• Write descriptions of land for deeds, leases, and other legal documents
• Provide expert testimony in court regarding their work or that of other surveyors

Surveyors guide construction and development projects and provide information needed for the buying and selling of property. In construction, surveyors determine the precise location of roads or buildings and proper depths for foundations and roads. Whenever property is bought or sold, it needs to be surveyed for legal purposes.

In their work, surveyors use the Global Positioning System (GPS), a system of satellites that locates reference points with a high degree of precision. Surveyors interpret and verify the GPS results. They gather the data that is fed into a Geographic Information System (GIS), which is then used to create detailed maps.

Surveyors take measurements in the field with a crew, a group that typically consists of a licensed surveyor and trained survey technicians. The person in charge of the crew (called the party chief) may be either a surveyor or a senior surveying technician. The party chief leads day-to-day work activities. For more information, see the profile on surveying and mapping technicians.

Some surveyors work in specialty fields to survey particular characteristics of the Earth. Examples include the following:

Geodetic surveyors use high-accuracy techniques, including satellite observations, to measure large areas of the Earth's surface.

Geophysical prospecting surveyors mark sites for subsurface exploration, usually to look for petroleum.

Marine or hydrographic surveyors survey harbors, rivers, and other bodies of water to determine shorelines, the topography of the bottom, water depth, and other features.