JRS Tree Service

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.

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.

Heavy vehicle and mobile equipment service technicians inspect, maintain, and repair vehicles and machinery used in construction, farming, rail transportation, and other industries.

Heavy vehicle and mobile equipment service technicians typically do the following:

• Read and understand operating manuals, blueprints, and drawings
• Perform scheduled maintenance, such as cleaning and lubricating parts
• Diagnose and identify malfunctions, using computerized tools and equipment
• Inspect, repair, and replace defective or worn parts, such as bearings, pistons, and gears
• Overhaul and test major components, such as engines, hydraulics, and electrical systems
• Disassemble and reassemble heavy equipment and components
• Travel to worksites to repair large equipment, such as cranes

Heavy vehicles and mobile equipment are critical to many industrial activities, including construction and railroad transportation. Various types of equipment, such as farm machinery, cranes, and bulldozers, are used to move materials, till land, lift beams, and dig earth to pave the way for development and construction.

Heavy vehicle and mobile equipment service technicians repair and maintain engines, hydraulic systems, transmissions, and electrical systems of agricultural, industrial, construction, and rail equipment. They ensure the performance and safety of fuel lines, brakes, transmissions, and other systems.

With many types of equipment and mechanical and electrical systems, service technicians use diagnostic computers to identify problems and make adjustments or repairs. Although the use of computerized testing equipment, such as tachometers and dynamometers, is common, technicians also use many different power and machine tools, including pneumatic wrenches, lathes, and welding equipment.

Service technicians also use many different handtools, such as screwdrivers, pliers, and wrenches, to work on small parts and in hard-to-reach areas. They generally purchase these tools over the course of their careers, often investing thousands of dollars in their collections.

After locating malfunctions, service technicians repair, replace, and recalibrate components such as hydraulic pumps or spark plugs. This may involve disassembling and reassembling major equipment or making adjustments through an onboard computer program.

The following are types of heavy vehicle and mobile equipment service technicians:

Farm equipment mechanics service and repair farm equipment, such as tractors and harvesters. They also work on smaller consumer-grade lawn and garden tractors. Most mechanics work for dealer repair shops, where farmers increasingly send their equipment for maintenance.   

Mobile heavy equipment mechanics repair and maintain construction and surface mining equipment, such as bulldozers, cranes, graders, and excavators. Many work for equipment wholesale and distribution shops and large construction and mining companies. Those working for the federal government may work on tanks and other military equipment.

Rail car repairers specialize in servicing railroad locomotives, subway cars, and other rolling stock. They usually work for railroad, public and private transit companies, and rail car manufacturers.

For information about technicians and mechanics who work primarily on automobiles, see the profile on automotive service technicians and mechanics.

For information about technicians who work primarily on large trucks and buses, see the profile on diesel service technicians and mechanics.

For information about technicians and mechanics who primarily work on motorboats, motorcycles and small all-terrain vehicles, see the profile on small engine mechanics.

Forest and conservation workers measure and improve the quality of forests. Under the supervision of foresters and forest and conservation technicians, they help to develop, maintain, and protect forests.

Forest and conservation workers typically do the following:

• Plant seedlings to reforest land
• Clear away brush and debris from camping trails, roadsides, and camping areas
• Count trees during tree-measuring efforts
• Select or cut trees according to markings, sizes, types, or grades
• Spray trees with insecticides and fungicides to kill insects and protect the trees from disease
• Identify and remove diseased or undesirable trees
• Inject vegetation with insecticides and herbicides
• Help prevent and suppress forest fires
• Check equipment to ensure that it is operating properly

Forest and conservation workers are often supervised by foresters and forest and conservation technicians, who direct their work and evaluate their progress.

They do basic tasks to maintain and improve forest quality, such as planting seedlings or removing diseased trees. To plant seedlings, they use digging and planting tools. To cut trees, they use handsaws or power saws.

Some forest workers work on tree farms, where they plant, cultivate, and harvest many different kinds of trees. Their duties vary with the type of farm and may include planting seedlings, spraying to control weed growth and insects, and harvesting trees.

Some forest and conservation workers work in forest nurseries, where they sort through tree seedlings, discarding those that don't meet standards. Others use hand tools or their hands to gather woodland products, such as decorative greens, tree cones, bark, moss, and other wild plant life. Some may tap trees to make syrup or chemicals.

Forest and conservation workers who are employed by or under contract with state and local governments may clear brush and debris from trails, roadsides, and camping areas. They may clean kitchens and rest rooms at recreational facilities and campgrounds.

Workers with a fire protection background also help to prevent fires. For example, they may construct firebreaks, which are gaps in vegetation that can help slow down or stop the progress of a fire. They also may work with technicians to study how quickly fires spread and how successful fire suppression activities were. For example, workers help count how many trees will be affected by a fire. They also sometimes respond to forest emergencies.