CSLB Landscaping (C-27) Trade — All Questions

Before any excavation or trenching in California, the law requires a contractor to do what?

• a.Only notify the adjacent property owners
• b.Wait 30 days before starting work
• c.Dig a test hole first without notice
• d.Contact DigAlert (811) to mark utilities✓

California Government Code section 4216 requires excavators to contact the regional one-call center, DigAlert (811), at least two working days before digging so utility owners can mark their buried lines. This prevents striking gas, electric, and other utilities. Failing to call can cause deadly accidents and legal liability.Gov Code §4216 (DigAlert)

Under Cal/OSHA, a trench generally must be protected by sloping, shoring, or shielding once it reaches what depth?

• a.5 feet, or less where a hazard exists✓
• b.20 feet or deeper in any soil type
• c.50 feet or deeper in any soil type
• d.2 inches or deeper in any loose backfill

Cal/OSHA requires cave-in protection such as sloping, benching, shoring, or a trench box for excavations 5 feet deep or greater, and even shallower trenches if a competent person identifies a hazard. Unprotected trenches can collapse and bury workers in seconds. A competent person must inspect trenches daily.Cal/OSHA Title 8

California's Heat Illness Prevention standard requires employers to provide which of the following to outdoor workers?

• a.Ice cream breaks during the shift
• b.Only drinking water on very hot days
• c.Nothing at all until a worker actually faints
• d.Shade, drinking water, rest breaks, training✓

Cal/OSHA's Heat Illness Prevention standard requires access to shade, plenty of cool drinking water, cool-down rest breaks, acclimatization, and training on recognizing heat illness. High-heat procedures kick in at certain temperatures. Landscapers work outdoors and are a key covered group.Cal/OSHA Title 8

When operating a walk-behind mower on a slope, the recommended practice is to do what?

• a.Mow only when the grass is wet
• b.Mow across the slope, side to side✓
• c.Mow straight up and down the slope
• d.Remove all guards before mowing

With a walk-behind mower you mow across the face of a slope so the machine cannot roll back over you and you keep better footing. The opposite applies to riding mowers, which are safer going up and down. Never remove safety guards, and keep hands and feet away from the deck.

In California, a person who applies restricted-use pesticides for hire generally must hold what?

• a.A county-issued food handler card
• b.No license or certificate of any kind
• c.A Qualified Applicator License (QAL/QAC)✓
• d.Only a valid California driver's license

California requires applicators of pesticides for hire to be properly licensed or certified, such as holding a Qualified Applicator License (QAL) or Qualified Applicator Certificate (QAC) depending on the work. These credentials show the person is trained in safe, legal pesticide use. Landscapers applying pesticides commercially must comply.

A Safety Data Sheet (SDS) for a landscape chemical provides what information?

• a.The pipe size to use for the supply line
• b.The plant's watering schedule
• c.Hazards, PPE, first aid, and storage✓
• d.The retail price of the product

A Safety Data Sheet lists a chemical's hazards, required personal protective equipment, first aid measures, safe handling and storage, and spill response. Employers must keep SDSs accessible to workers under the hazard communication standard. Workers should review the SDS before using any chemical.

When operating a gas-powered chipper/shredder, which practice is safest?

• a.Feed material with bare hands past the intake
• b.Reach into the feed chute while it runs
• c.Wear loose clothing and no eye protection
• d.Wear eye and hearing protection, hands clear✓

Chippers demand snug clothing, eye and hearing protection, and keeping hands well back from the feed opening, using a push stick or the branch itself to feed material. Never reach into the chute while the machine runs, as the feed mechanism can pull in a hand or arm instantly. Always shut down and lock out before clearing a jam.

When using a chainsaw or working near it, which PPE combination is appropriate?

• a.Only sandals and sunglasses on hot days
• b.Chaps, eye and hearing protection, gloves✓
• c.No protection is needed for short cuts
• d.A single glove and shorts in warm weather

Proper chainsaw PPE includes cut-resistant chaps, eye and hearing protection, sturdy gloves, and a hard hat when limbs could fall. This gear protects against kickback, flying debris, noise, and falling branches. Skipping PPE, even for short cuts, causes serious injuries.

Before servicing or clearing a jam in powered landscape equipment, the safest first step is what?

• a.Have a coworker hold the blade steady first
• b.Simply tilt the machine on its side
• c.Increase the throttle to clear it
• d.Shut off the engine and disconnect the plug✓

Powered equipment must be shut off and its energy source isolated, such as disconnecting the spark plug wire or applying lockout/tagout, before anyone clears a jam or services it. This prevents accidental startup that could amputate fingers or hands. It is a fundamental rule for mowers, trimmers, and chippers.

A contractor with employees in California generally must have which of the following?

• a.A written Injury and Illness Prevention Program✓
• b.A single first aid bandage kept in the work truck
• c.Nothing in writing is required at all
• d.Only a business card for the crew lead

Cal/OSHA requires nearly every California employer to establish and maintain a written Injury and Illness Prevention Program (IIPP) that identifies hazards and sets procedures to correct them. It must include training, inspections, and a way for employees to report hazards. It is a foundational Cal/OSHA safety requirement.Cal/OSHA Title 8

When mixing and applying pesticides, the label directions are legally significant because what?

• a.They can be ignored by licensed applicators
• b.They apply only to homeowners
• c.They are only suggestions
• d.The label is the law and must be followed exactly✓

Under pesticide regulations, the product label is a legal document, and using a pesticide in a manner inconsistent with its labeling is a violation. The label specifies rates, sites, PPE, and restrictions that must be followed exactly. This protects applicators, the public, and the environment.

Early signs of heat exhaustion in a worker include which of the following?

• a.Improved strength and steady energy
• b.Heavy sweating, weakness, dizziness, nausea✓
• c.Dry, comfortable skin and clear thinking
• d.No symptoms at all until collapse

Heat exhaustion commonly shows as heavy sweating, weakness, dizziness, nausea, and headache, and it can progress to life-threatening heat stroke if ignored. Affected workers should move to shade, cool down, and drink water. Recognizing these signs early is part of required heat illness training.

When lifting heavy bags of soil or stone, the correct technique is to do what?

• a.Bend the knees and keep the back straight✓
• b.Hold the load out away from the body
• c.Bend at the waist and twist to lift
• d.Lift with straight legs and rounded back

Safe lifting keeps the back straight, bends the knees, and uses the leg muscles to raise the load held close to the body, avoiding twisting. This reduces strain on the lower back, a leading source of landscaping injuries. Heavy or awkward loads should be split or team-lifted.

When working near overhead power lines with tall equipment or ladders, workers must do what?

• a.Keep clearance and treat lines as live✓
• b.Lean the ladder against the power line
• c.Ignore the lines if they look old and worn
• d.Touch the line briefly to test it

All overhead lines should be treated as energized, and workers must keep required minimum clearances with ladders, poles, and equipment such as loaders and tree-trimming gear. Contact or arcing can be fatal. When work must occur close to lines, the utility should be contacted to de-energize or cover them.

Pesticide containers, after being emptied, should be handled how?

• a.Left open in the yard for later reuse
• b.Triple-rinsed and disposed of by label✓
• c.Buried anywhere on the job site after use
• d.Reused to carry drinking water for crews

Empty pesticide containers should be triple-rinsed, with rinse water added to the spray tank, then disposed of per the label and local regulations. They must never be reused for food, water, or other purposes. Proper disposal prevents contamination and accidental poisoning.

A 'competent person' on a trenching job is someone who can do what?

• a.Sell the customer additional trench work
• b.Only operate the excavator safely
• c.Sign the contract for the job
• d.Spot hazards and correct them promptly✓

Cal/OSHA defines a competent person as one capable of identifying existing and predictable hazards and who is authorized to take prompt corrective measures to eliminate them. On trenching jobs this person inspects the excavation, soil, and protective systems daily. Their authority to stop unsafe work is essential.Cal/OSHA Title 8

When operating a trencher, the operator should do what to stay safe?

• a.Keep bystanders clear and watch for utilities✓
• b.Dig first, then call DigAlert afterward
• c.Wear loose jewelry and listen to headphones
• d.Let bystanders stand next to the digging chain

Trencher safety means keeping bystanders back, working only after utilities are located and marked, and keeping hands, feet, and clothing away from the moving digging chain. Loose items can be caught by the chain. Utility location must happen before, not after, digging.

When climbing to prune a tree, a professional arborist relies mainly on what for fall protection?

• a.No protection when pruning low limbs
• b.Holding branches with one hand only
• c.A rope, saddle, and secure tie-in point✓
• d.Standing on the top rung of a stepladder

Professional tree climbers use a rope-and-saddle climbing system tied into a sound anchor point to protect against falls while working aloft. Standing on the top of a ladder or relying on hand grip is unsafe. Proper tie-in and inspected gear are essential for tree work.

Appropriate PPE for a worker applying a liquid herbicide typically includes which of the following?

• a.Chemical-resistant gloves and eye protection✓
• b.Only sunglasses and a light cotton shirt
• c.No gloves, so you can feel the sprayer
• d.Shorts and open sandals in warm weather only

Applying liquid pesticides calls for chemical-resistant gloves, eye protection, long sleeves and pants, closed shoes, and whatever additional protection the label requires, which can include a respirator. The label specifies the minimum PPE for that product. Skin and eye contact with concentrates can cause serious harm.

Backing up a truck and trailer or operating equipment in a crew area is made safer by which practice?

• a.A trained spotter and a working backup alarm✓
• b.Turning off all the mirrors first
• c.Letting anyone stand behind the vehicle
• d.Backing quickly with no one watching

A trained spotter, functioning backup alarm, and careful blind-spot checks greatly reduce the risk of striking a worker or object while backing. Landscape crews often work in tight spaces with equipment moving nearby. Clear communication and awareness prevent serious struck-by incidents.

A crew plans to trench for irrigation on Thursday morning. When should the regional notification center be contacted?

• a.Only if the property has no as-built utility drawings
• b.At least two working days before excavation begins✓
• c.The morning of the work, once the trench line is staked
• d.Within 24 hours after the excavation is opened

California requires notification at least two working days ahead so owners can mark their facilities before digging starts. Calling the morning of the work leaves no time for marking. Notifying after the trench is open defeats the purpose entirely. The requirement applies regardless of what drawings the property owner happens to have.Gov Code §4216 (DigAlert)

Utility marks are painted across a yard and the crew must trench across one of them. How should the excavation proceed at the marked line?

• a.Cross with the backhoe bucket teeth removed to avoid damage
• b.Offset the trench two feet and cross at right angles by machine
• c.Use the trencher slowly across the mark and watch for the facility
• d.Hand expose the facility within the tolerance zone before machine work✓

Within the tolerance zone on each side of a mark the facility must be exposed by hand or other non-destructive means before powered equipment is used. Slowing a trencher does not prevent a strike. Offsetting two feet does not clear the zone. Removing bucket teeth still leaves enough force to break a line.Gov Code §4216 (DigAlert)

A yellow mark is painted across the proposed trench line. What does that color indicate?

• a.Communication and telecom lines
• b.Potable water lines
• c.Reclaimed water and irrigation lines
• d.Gas, oil, or other flammable material✓

Yellow is the uniform color code for gas, oil, steam, and other flammable or hazardous material, which is why it demands the greatest caution. Potable water is blue, communications are orange, and reclaimed water and irrigation lines are purple, so mistaking a yellow mark for any of those could put a crew on top of a gas line.

A trencher nicks a plastic gas service and gas begins escaping. What is the correct immediate response?

• a.Backfill the trench to smother the escaping gas, then call the utility
• b.Pinch or wrap the line to slow the leak, then call the utility
• c.Evacuate upwind, keep ignition sources away, and call 911✓
• d.Shut down equipment, stay at the trench, and wait for the utility

A damaged gas line is an immediate life hazard, so the crew leaves the area upwind, keeps all ignition sources away, and notifies emergency services and the operator. Attempting a field repair puts a worker directly in the release. Remaining at the trench keeps people in the hazard zone. Backfilling can drive gas into nearby structures.

A worker will enter a trench that is 6 feet deep in Type C soil. What protection is required?

• a.Two workers present so one can assist if a collapse occurs
• b.Sloping, shoring, or a trench shield designed for the soil type✓
• c.Spoil placed on both sides of the trench to balance the load
• d.A ladder within 25 feet of the worker at all times

Once a trench reaches the regulated depth, a protective system suited to the soil type is required, and Type C soil cannot be benched. A ladder is a required means of egress but does not prevent collapse. A second worker on site is not a protective system. Spoil placed at the edge adds load and increases the risk of failure.Cal/OSHA Title 8

Excavated soil is being stockpiled beside an open trench. Where must the spoil pile be placed?

• a.At least two feet back from the edge of the excavation✓
• b.Within one foot of the edge to minimize double handling
• c.Only on the downhill side of the trench regardless of distance
• d.Directly at the trench edge so it can be pushed back quickly

Keeping spoil at least two feet back reduces the surcharge load on the trench wall and keeps material from rolling in on a worker. Piling at the edge or a foot away loads the wall exactly where it is weakest. Placing it downhill does not address the surcharge and may block escape.Cal/OSHA Title 8

A crew is working in a trench 90 feet long that meets the depth requiring a means of egress. How should ladders be arranged?

• a.Ladders spaced so no worker travels more than 25 feet to one✓
• b.One ladder placed at the midpoint of the trench, near the crew
• c.One ladder at each end of the excavation
• d.One ladder for every worker in the trench

The rule limits how far a worker must move sideways to reach a way out, so ladders are spaced to keep that travel within 25 feet. A single midpoint ladder can leave a worker more than 25 feet away. Ladders only at the ends are worse. Egress is measured by distance, not by counting one ladder per person.Cal/OSHA Title 8

What is a competent person required to do on a trenching job?

• a.Remain outside the trench and observe the crew at all times
• b.Hold a state excavation certificate issued after a written examination
• c.Sign the daily time sheets confirming the crew received a safety briefing
• d.Inspect the excavation and protective systems and stop work✓

A competent person is defined by the ability to recognize hazards and by the authority to correct them, which is exercised through inspections and the power to stop work. No state excavation certificate creates the role. Staying out of the trench is not part of the definition. Signing time sheets is a paperwork task with no bearing on hazard control.Cal/OSHA Title 8

When must a trench be re-inspected by the competent person?

• a.Daily before each shift and again after rain or any change in conditions✓
• b.At the completion of the excavation and before backfilling
• c.Once per week and after any change in the protective system
• d.Only when the trench exceeds the regulated depth

Soil conditions change quickly, so inspections occur before each shift and again after rainfall, vibration, or anything else that could affect stability. Weekly inspection leaves days of unmonitored risk. Depth determines whether protection is required, not how often inspection occurs. An inspection at backfill comes far too late to protect anyone.Cal/OSHA Title 8

California's heat illness standard requires shade to be present and available when the temperature reaches what point?

• a.When the temperature exceeds 90 degrees Fahrenheit
• b.When the temperature exceeds 80 degrees Fahrenheit✓
• c.When the temperature exceeds 95 degrees Fahrenheit
• d.When workers request it, at any temperature

Shade must be up and accessible once the temperature passes 80 degrees, and it must be provided on request below that. Ninety-five degrees is the threshold where additional high-heat procedures apply rather than where shade begins. Ninety degrees is not a threshold in the standard, and request-only shade applies only in the cooler range.Cal/OSHA Title 8

How much drinking water must an employer make available to each outdoor worker under the heat illness standard?

• a.At least one quart per worker per hour, kept cool and close✓
• b.A gallon at the start of the shift, refilled at lunch
• c.Two quarts for the shift, provided in sealed containers
• d.Access to a water source within a quarter mile of the work area

The standard is built around one quart per hour per worker, with water kept suitably cool and as close as practicable to where the crew is working. A single gallon at shift start does not stay cool or accessible. A quarter-mile walk is not close by. Two quarts for an entire shift falls far short of the required supply.Cal/OSHA Title 8

What does the acclimatization requirement address for a new landscape laborer starting in July?

• a.A limit of four hours per day for the first two weeks
• b.Close observation during the first days of work in high heat✓
• c.A reduced pay rate during the training period
• d.A medical examination before the worker may work outdoors

Workers who are not used to heat are at the greatest risk in their first days, so the standard requires closer observation during that period. A pre-employment medical exam is not required by the heat standard. Pay is not a safety matter. There is no blanket four-hour daily cap for new workers in the standard.Cal/OSHA Title 8

A worker on a hot day is confused, has stopped sweating, and has hot dry skin. What is the correct action?

• a.Give an electrolyte drink and monitor the worker for the next hour
• b.Move the worker to shade, give fluids, and resume work after a break
• c.Call 911 immediately and begin active cooling while help is on the way✓
• d.Have the worker rest in the truck with the air conditioning running

Confusion with hot dry skin points to heat stroke, a medical emergency in which delay costs lives, so emergency services are called and aggressive cooling begins at once. Resuming work is dangerous. Sitting in a truck delays both cooling and treatment. Fluids and observation are appropriate for heat exhaustion but not for these signs.

What written program does Cal/OSHA require every California employer to have in place?

• a.A respiratory protection program covering all field employees
• b.A confined space entry program for irrigation vaults
• c.An injury and illness prevention program with training✓
• d.A hazardous materials business plan filed with the county

Every California employer must maintain an injury and illness prevention program covering responsibility, hazard identification, correction, training, and communication. A hazardous materials business plan applies only above reporting quantities. A respiratory program is required only where respirators are used. A confined space program applies only where such spaces exist.Cal/OSHA Title 8

A landscape worker suffers an amputation on a chipper and is hospitalized. What is the employer's reporting obligation?

• a.Report it to the insurance carrier, which notifies the state
• b.Report it only if the worker misses more than three days of work
• c.Report it to Cal/OSHA immediately, within the required short window✓
• d.Enter it in the injury log and report it at the next quarterly filing

A serious injury such as an amputation or hospitalization must be reported to Cal/OSHA immediately, within a short statutory window, in addition to any log entry. Quarterly filing is far too slow. The carrier's notification does not satisfy the employer's duty. The reporting trigger is the seriousness of the injury rather than days away from work.

A Safety Data Sheet accompanies a landscape chemical. What must the employer do with it?

• a.Keep it accessible to employees and train them on the hazards✓
• b.Attach a copy to each container before the product is used
• c.Retain it in the office and produce it only if an inspector asks
• d.File it with the county agricultural commissioner within 30 days

Hazard communication requires that data sheets be readily accessible to workers on every shift and that employees be trained on what they contain. Filing with the county is not the general requirement. Sheets are not attached to containers, which carry labels instead. Locking them in an office defeats the purpose of accessibility.

A pesticide label carries the signal word DANGER. What does that indicate?

• a.The product must be applied by two workers working together
• b.The product is restricted to agricultural use only
• c.The product may only be applied between dusk and dawn
• d.The product is the most acutely hazardous signal word class✓

Signal words rank acute hazard, with DANGER the most severe, followed by WARNING and then CAUTION. The signal word does not by itself make a product restricted use, does not dictate crew size, and does not set application hours. Those requirements come from other parts of the label and from state regulation.

A crew wants to apply a pesticide at twice the label rate to get faster results on a heavy weed stand. What is the correct position?

• a.Acceptable if the applicator is licensed and the site is fenced
• b.Prohibited, because the label directions carry the force of law✓
• c.Acceptable if the property owner provides written consent
• d.Acceptable if the label lists no maximum concentration

Applying a pesticide inconsistently with its labeling is a violation, so exceeding the labeled rate is unlawful regardless of who applies it or who consents. A license authorizes an applicator to use a product as labeled, not beyond it. Absence of a stated maximum does not permit doubling. Owner consent cannot waive a legal requirement.

What does the restricted entry interval on a pesticide label establish?

• a.How long the applicator must wear a respirator after spraying
• b.How long the container may be stored before disposal
• c.How long the product remains effective after mixing
• d.How long people must stay out of the treated area after application✓

The restricted entry interval is the waiting period before anyone may enter the treated area without the specified protective equipment. Product stability after mixing and container storage life are separate label items. Respirator use is governed by the personal protective equipment section rather than by the entry interval.

A landscape company wants to apply pesticides for hire in California. What is generally required of the business itself?

• a.A permit from the local water district for each application site
• b.A single certificate held by the company owner and no other filing
• c.Registration as a pest control business with the state and county✓
• d.A contractor license classification specific to chemical application

Applying pesticides for hire requires the business to be licensed and registered with the state regulator and with the counties where it works, in addition to certified individuals directing the work. One personal certificate does not license the business. There is no separate contractor classification for chemical application, and water districts do not permit routine applications.

An empty pesticide container is being prepared for disposal. What is the correct handling?

• a.Puncture it and place it in the job site dumpster
• b.Rinse it with clean water at the shop and pour the rinsate into a floor drain
• c.Store it sealed until the next application uses the same product
• d.Triple rinse it, add the rinsate to the spray tank, then dispose as directed✓

Triple rinsing recovers residue into the tank where it is used as intended, and the container is then disposed of according to the label and local rules. Putting an unrinsed container in a dumpster disposes of pesticide residue improperly. Rinsate poured into a drain enters the sewer. Refilling a container that was emptied is not a disposal method.

Wind is gusting to 15 miles per hour and a herbicide application is scheduled next to a vegetable garden. What is the appropriate decision?

• a.Postpone the application until conditions reduce drift risk✓
• b.Apply while shielding the garden with a tarp held by a worker
• c.Apply at a lower pressure and increase the walking speed
• d.Apply with a finer nozzle so less material is used overall

Drift onto a non-target site is a violation and a real hazard, and the reliable control is to wait for suitable conditions. Finer droplets drift more, not less. A hand-held tarp puts a worker in the spray zone and does not stop airborne drift. Faster walking at lower pressure reduces rate without controlling where the spray goes.

What personal protective equipment is required when mixing and loading a pesticide concentrate?

• a.Whatever the applicator judges appropriate for the product
• b.A respirator whenever the product carries a signal word
• c.The equipment specified on that product's label for mixing✓
• d.Gloves and eye protection for any liquid product

The label states the required protective equipment, and the mixing and loading step often requires more than application because the concentrate is being handled. Applicator judgment does not override the label. A single default of gloves and eye protection may be insufficient. Respirator requirements come from the label rather than from the signal word alone.

A chainsaw operator is limbing a fallen tree. Which practice reduces kickback risk?

• a.Cutting with the tip of the bar to keep the body away from the wood
• b.Keeping the upper tip of the guide bar clear of contact with material✓
• c.Running the chain slightly loose so it releases if it binds
• d.Removing the chain brake so the saw does not stall in the cut

Kickback occurs when the upper quadrant of the bar nose contacts material, so keeping that zone clear is the primary control. Disabling the chain brake removes the device that stops the chain during a kickback. Deliberately cutting with the tip is the classic way to cause one. A loose chain can derail and increases risk rather than reducing it.

Which combination of protective equipment is appropriate for ground-level chainsaw work?

• a.Hearing protection, a dust mask, and high-visibility clothing
• b.A hard hat with a face shield and standard work clothing
• c.Safety glasses, gloves, and steel-toe boots
• d.Head, eye, and hearing protection plus chaps and boots✓

Chainsaw work needs the head, eyes and face, hearing, and legs protected together, since chaps address the most common severe injury. Glasses and boots alone leave the legs and hearing unprotected. A hard hat over ordinary clothing leaves the legs exposed. A dust mask and vest address neither noise-level injury risk nor contact with the chain.

How should a chainsaw be started when no bench or stable surface is available?

• a.By placing it on the ground or gripping it between the legs✓
• b.By bracing the bar against a log and pulling the starter cord
• c.By resting it on a tailgate and pulling the cord with the throttle locked open
• d.By drop starting, holding the saw away from the body

A saw is started on the ground or with the rear handle clamped between the knees, with the chain brake engaged, so the moving chain is controlled. Drop starting swings a running saw through the air. Bracing the bar against a log puts the chain against material at startup. Locking the throttle open makes the chain run immediately at speed.

A crew member notices tree limbs within 10 feet of an energized overhead distribution line. What is the correct action?

• a.Trim only after shutting off power at the building main panel
• b.Stop and arrange for qualified line clearance tree trimmers✓
• c.Trim with insulated gloves rated for the line voltage
• d.Trim with a fiberglass pole saw while standing on dry ground

Work near energized lines within the minimum approach distance is restricted to qualified line clearance personnel and must be coordinated with the utility. A fiberglass pole does not make an untrained worker qualified. Rubber gloves are not adequate for distribution voltages. A building panel does not de-energize a utility distribution line.

An aluminum extension ladder is being carried across a yard toward a hedge near overhead service conductors. What is the primary hazard?

• a.Loss of the ladder's load rating from carrying it extended
• b.Contact between the conductive ladder and the energized conductors✓
• c.Damage to the hedge from the ladder feet during setup
• d.Bending of the ladder rails while it is carried horizontally

An aluminum ladder conducts, and raising or carrying it near overhead conductors is a leading cause of electrocution in outdoor trades. Rail bending is a maintenance concern rather than a life hazard. Damage to plant material is a quality issue. Carrying a ladder does not alter its rated capacity.

A straight ladder is set to reach a 16-foot height. Where should the base be placed?

• a.About eight feet from the wall so the angle is comfortable
• b.About four feet from the wall, following the four to one rule✓
• c.Directly against the wall with the ladder tied at the top
• d.About two feet from the wall for maximum stability

The four to one rule places the base one foot out for every four feet of working height, so a 16-foot height calls for about four feet. Two feet makes the ladder too steep and prone to tipping backward. Eight feet makes it too shallow and likely to slide out. A ladder set vertically against a wall is unstable even if tied.

A worker is clearing a jam in a chipper infeed. What must be done first?

• a.Shut down the engine, wait for motion to stop, and lock out✓
• b.Have a second worker stand by the control bar while the jam is cleared
• c.Reverse the feed rollers and pull the material out by hand
• d.Raise engine speed briefly to push the jammed material through

Powered equipment must be shut down, allowed to come to a complete stop, and secured against restart before anyone reaches into it. Reversing rollers still leaves a running machine. A second worker at the controls is not a substitute for de-energizing. Increasing engine speed puts more energy into the machine while a hand is near the infeed.