CSLB Landscaping (C-27) Trade — All Questions

During final grading the crew finds the finish grade at the side yard is two inches above the weep screed at the base of the stucco wall. What must be done?

• a.Lower the grade to restore clearance below the screed✓
• b.Install a curb along the wall to hold the soil back
• c.Seal the base of the stucco with an elastomeric coating
• d.Add a gravel band at the wall so water drains through the soil

The weep screed drains the wall assembly and must stay above grade, so soil covering it has to be removed. A coating traps moisture inside the wall. Gravel placed at the same elevation still blocks the screed. A curb holds soil at the same height and leaves the screed buried.

A bed measures 24 feet by 15 feet and will receive 4 inches of mulch. How many cubic yards are needed?

• a.About 4.4 cubic yards✓
• b.About 6.7 cubic yards
• c.About 2.2 cubic yards
• d.About 3.3 cubic yards

The area is 360 square feet and 4 inches is one third of a foot, giving 120 cubic feet, which divided by 27 is about 4.4 cubic yards. The 2.2 figure corresponds to 2 inches of depth. The 3.3 figure corresponds to 3 inches. The 6.7 figure corresponds to 6 inches of depth over the same area.

A crew must import soil for a bed 40 feet long, 10 feet wide, and 9 inches deep. How many cubic yards should be ordered before waste?

• a.About 7.4 cubic yards
• b.About 10.5 cubic yards
• c.About 9.0 cubic yards
• d.About 11.1 cubic yards✓

Four hundred square feet at 0.75 feet deep is 300 cubic feet, and 300 divided by 27 is about 11.1 cubic yards. The 7.4 figure matches a 6-inch depth. The 9.0 figure does not follow from these dimensions. The 10.5 figure would require a slightly smaller area or a shallower depth.

Which expression converts an area in square feet and a depth in inches directly to cubic yards?

• a.Area times depth in inches, divided by 324✓
• b.Area divided by depth in inches, times 27
• c.Area times depth in inches, times 12, divided by 27
• d.Area times depth in inches, divided by 27

Twelve inches per foot times 27 cubic feet per yard gives 324, so dividing the product of area and depth in inches by 324 yields cubic yards in one step. Dividing by 27 alone forgets the inch to foot conversion. Dividing area by depth is dimensionally wrong. Multiplying by 12 moves the conversion in the wrong direction.

A supplier quotes decomposed granite by the ton at roughly 1.4 tons per cubic yard. How many tons are needed for 9 cubic yards?

• a.About 9.0 tons
• b.About 12.6 tons✓
• c.About 25.2 tons
• d.About 6.4 tons

Nine cubic yards times 1.4 tons per cubic yard is about 12.6 tons. The 6.4 figure comes from dividing rather than multiplying. Nine tons assumes a conversion factor of one, which no aggregate has. The 25.2 figure doubles the correct result and would apply only at 2.8 tons per yard.

A circular lawn has a radius of 12 feet. What is its area?

• a.About 226 square feet
• b.About 452 square feet✓
• c.About 576 square feet
• d.About 75 square feet

Area equals pi times the radius squared, so 3.14 times 144 is about 452 square feet. The 75 figure is the circumference rather than the area. The 226 figure would result from using 12 as the diameter. The 576 figure is the area of a square 24 feet on a side, which encloses the circle.

A triangular corner bed has a base of 18 feet and a height of 12 feet. What is its area?

• a.About 216 square feet
• b.About 60 square feet
• c.About 108 square feet✓
• d.About 30 square feet

The area of a triangle is one half the base times the height, so 18 times 12 divided by 2 is 108 square feet. Thirty square feet is roughly the perimeter dimension summed rather than an area. Sixty square feet does not follow from these numbers. The 216 figure is the full rectangle before it is halved.

A plan is drawn at a scale of one eighth inch equals one foot. A wall measures 5 inches on the plan. How long is it?

• a.20 feet
• b.62.5 feet
• c.10 feet
• d.40 feet✓

At one eighth inch per foot, each inch on the drawing represents 8 feet, so 5 inches is 40 feet. Twenty feet would correspond to two and a half inches. The 62.5-foot figure comes from dividing rather than multiplying. Ten feet would be the answer only if each inch represented two feet.

A bed will be planted with one-gallon shrubs at 30 inches on center in square spacing. Roughly how many plants fit in 400 square feet?

• a.About 40 plants
• b.About 160 plants
• c.About 96 plants
• d.About 64 plants✓

Thirty inches is 2.5 feet, so each plant occupies about 6.25 square feet, and 400 divided by 6.25 is about 64. Forty plants would suit spacing near 3 feet 2 inches. Ninety-six plants implies spacing around 2 feet. One hundred sixty plants implies spacing of about 18 inches.

Sod is sold in rolls covering 10 square feet each, and the lawn measures 32 feet by 45 feet. How many rolls should be ordered including a typical waste allowance?

• a.About 150 rolls
• b.About 144 rolls
• c.About 200 rolls
• d.About 160 rolls✓

The area is 1,440 square feet, which is 144 rolls exactly, and adding roughly ten percent for cuts and curves brings the order to about 160. Ordering 144 leaves nothing for waste. One hundred fifty covers only about four percent waste. Two hundred rolls is nearly forty percent over and would be paid for and discarded.

A seed specification calls for 8 pounds per 1,000 square feet on a 7,500 square foot area. How much seed is required?

• a.About 48 pounds
• b.About 60 pounds✓
• c.About 55 pounds
• d.About 40 pounds

Seventy-five hundred square feet is 7.5 units of 1,000, and 7.5 times 8 pounds is 60 pounds. Forty pounds corresponds to a rate near 5.3 pounds. Forty-eight pounds corresponds to 6.4 pounds. Fifty-five pounds falls short of the specified rate and would leave a thin stand.

A patio slab is 14 feet by 20 feet and 4 inches thick. How much concrete is needed before waste?

• a.About 5.2 cubic yards
• b.About 3.5 cubic yards✓
• c.About 2.6 cubic yards
• d.About 10.4 cubic yards

Two hundred eighty square feet at one third of a foot thick is about 93 cubic feet, or roughly 3.5 cubic yards. The 2.6 figure corresponds to a 3-inch slab. The 5.2 figure corresponds to a 6-inch slab. The 10.4 figure would require a slab a foot thick.

Why do estimators typically add a percentage to a calculated concrete quantity?

• a.Because subgrade irregularity and spillage consume material✓
• b.Because the mix design gains volume when water is added on site
• c.Because concrete shrinks measurably as it cures in the forms
• d.Because suppliers charge a penalty for short loads under five yards

Real subgrades are never perfectly flat, and spillage and slight over-excavation always take more than the theoretical volume, so a waste allowance is standard. Curing shrinkage is negligible in volume terms. Short load fees are a separate line item rather than a reason to buy more material. Adding water does not create usable volume.

An estimator lists crew wages, payroll taxes, and workers' compensation premium for the hours spent on a job. Which cost category is this?

• a.Direct labor cost✓
• b.Contingency
• c.Gross profit
• d.General overhead

Costs tied to hours worked on a specific job, including the burden that rides on wages, are direct labor. General overhead covers costs that exist whether or not that job is running. Contingency is an allowance for unknowns. Gross profit is what remains after direct costs are subtracted from revenue.

Which of these is an overhead cost rather than a direct job cost?

• a.Equipment rental billed for the days used on that job
• b.Plants and irrigation parts delivered to the job site
• c.Subcontracted electrical work performed on that job
• d.Office rent and general liability insurance premiums✓

Overhead is the cost of being in business whether or not any particular job is running, which describes office rent and general insurance. Materials delivered to a job, rental billed for job days, and a subcontract performed on that job all attach to that job and are direct costs.

A job costs $10,000 and the contractor wants a 20 percent gross margin on the selling price. What should the price be?

• a.$11,800
• b.$12,500✓
• c.$13,300
• d.$12,000

A 20 percent margin means cost is 80 percent of price, so price is 10,000 divided by 0.80, or 12,500. Charging 12,000 applies a 20 percent markup on cost, which yields only about a 16.7 percent margin. The 11,800 figure corresponds to neither calculation. The 13,300 figure would represent a 25 percent margin.

What is the difference between markup and margin?

• a.Markup includes overhead and margin includes only profit
• b.Markup is a percentage of cost and margin is a percentage of price✓
• c.Markup is used on time and materials work and margin on fixed price work
• d.Markup applies to labor and margin applies to materials

Markup is added to cost while margin is measured against the selling price, which is why a 20 percent markup produces less than a 20 percent margin. Neither term is tied to a particular cost type, neither excludes overhead by definition, and both apply to any contract structure.

An estimator uses a production rate of 250 square feet of sod installed per crew-hour. How many crew-hours does a 3,000 square foot lawn take?

• a.12 crew-hours✓
• b.8 crew-hours
• c.10 crew-hours
• d.15 crew-hours

Three thousand divided by 250 is 12 crew-hours. Eight hours would imply a rate of 375 square feet per hour. Ten hours would imply 300 square feet per hour. Fifteen hours would imply 200 square feet per hour, and using the wrong rate is how a bid loses money before the crew arrives.

Why does an estimator track historical production rates from completed jobs?

• a.Because a company's own crews and conditions predict its costs✓
• b.Because insurance carriers set premiums based on those rates
• c.Because published rates are required to be used on public work
• d.Because rates determine the markup percentage a company may charge

Actual rates from a company's own completed work capture its crews, equipment, and typical site conditions, which is what makes future bids accurate. Published rates are not mandated on public work. Insurance premiums are based on payroll and classification. Markup is a business decision, not something production rates set.

A bid is prepared as a lump sum for a defined scope. What is the main risk to the contractor?

• a.The contractor cannot be paid until the entire job is complete
• b.The owner may reduce the scope after work has begun
• c.Material price changes are automatically passed to the owner
• d.Underestimated quantities or site conditions come out of the contractor profit✓

In a lump sum contract the contractor carries the estimating risk, so quantities or conditions that come in higher than assumed reduce profit. Scope reductions are handled by change order. Price escalation is not automatically passed through unless the contract says so. Progress payments are normal on lump sum work.

An owner asks for an additional planting bed after the contract is signed. How should the contractor handle it?

• a.Absorb it to protect the relationship and recover it on the next job
• b.Write a change order with the work and price, signed first✓
• c.Add the work and bill it on the final invoice as extra
• d.Add the work and increase the retention held at the end

A written, signed change order fixes the scope and price before the work is done and is the only reliable protection against a dispute at final billing. Adding it silently invites refusal to pay. Absorbing the cost is a gift with no mechanism for recovery. Retention is money the owner holds and is not a way to charge for extras.

A residential landscape job is being sold for $18,000. What does California law require of the agreement?

• a.A written home improvement contract signed before work begins✓
• b.A written contract only if the owner requests one in writing
• c.A written estimate is enough if the owner initials each page
• d.An oral agreement is sufficient if the owner is present at the walkthrough

Home improvement contracts above a low dollar threshold must be in writing and signed before work starts, and an $18,000 landscape job is well past it. An oral agreement does not satisfy the requirement no matter who was present. An estimate is not a contract. The requirement does not depend on the owner asking.B&P Code §7159

On a $30,000 residential landscape contract, what is the limit on the down payment a licensed contractor may collect?

• a.Thirty percent of the contract price
• b.Ten percent of the contract price with no dollar cap
• c.Fifteen percent of the contract price
• d.One thousand dollars or ten percent, whichever is less✓

California caps a home improvement down payment at one thousand dollars or ten percent of the contract price, whichever is the smaller number, so on a thirty thousand dollar job the limit is one thousand dollars. Thirty and fifteen percent are far above any allowed figure, and ten percent without the dollar cap would allow three thousand dollars.

A homeowner signs a landscape contract at their kitchen table on a Monday. What right does California law give them?

• a.A right to cancel until the first payment is deposited by the contractor
• b.No right to cancel, because they initiated the contact with the contractor
• c.A thirty-day right to cancel once work has not yet started
• d.A three-day right to cancel the contract, disclosed in the agreement✓

Home improvement contracts carry a three-day right of cancellation that must be disclosed in the agreement, with a longer period for certain older homeowners. Thirty days is not the statutory period. Cancellation rights are not tied to when a check clears, and a customer-initiated call does not remove the disclosure requirement.

A homeowner asks an unlicensed neighbor to install a small planter for a total of $1,400 including materials. Does the minor work exemption apply?

• a.No, because the total price exceeds the minor work threshold✓
• b.Yes, because materials are excluded from the threshold calculation
• c.Yes, because the work is a single small landscape feature
• d.No, because the exemption applies only to repairs and not to new work

The minor work exemption applies only when the total contract price for labor and materials is under the statutory threshold, and fourteen hundred dollars exceeds it. Being a small feature does not matter. Materials count toward the total rather than being excluded. The exemption is not limited to repair work.B&P Code §7048

A C-27 licensee places an advertisement for landscape services in a local paper. What must the advertisement include?

• a.The name of the qualifying individual on the license
• b.The license number issued by the board✓
• c.The classifications the licensee is qualified to hold
• d.The bond amount currently held by the licensee

California requires a licensee's number to appear in advertising so consumers can verify the license and its status. The bond amount is a matter of public record but is not required in the ad. Listing potential classifications is not required, and the qualifier's name is not part of the advertising requirement.

What is the purpose of the contractor's license bond?

• a.It guarantees the contractor will complete every contract signed
• b.It covers injuries to employees working on licensed projects
• c.It insures the contractor against liability for property damage
• d.It provides limited recovery for certain parties harmed by violations✓

The license bond is a consumer protection device that provides limited recovery to specified claimants when a licensee violates the licensing law, and it is not insurance for the contractor. Property damage liability is covered by general liability insurance. Completion is covered by a performance bond. Employee injuries are covered by workers' compensation.

A C-27 contractor hires three seasonal laborers. What coverage becomes mandatory?

• a.An increased license bond amount filed with the board
• b.A performance bond equal to the value of open contracts
• c.Workers' compensation insurance covering those employees✓
• d.A disability policy naming each employee individually

Any California employer must carry workers' compensation once it has employees, and a licensee must file evidence of it. A performance bond is a contract requirement on particular projects rather than a consequence of hiring. Individual disability policies are not mandated. The license bond amount is set by statute and does not scale with headcount.

A supplier delivering plants to a job wants to protect its right to file a mechanics lien. What step is normally required first?

• a.Recording a notice of completion with the county
• b.Serving a preliminary notice on the owner and lender in time✓
• c.Obtaining the contractor's written consent to lien the property
• d.Filing a copy of the purchase order with the licensing board

A preliminary notice served early in the job is what preserves lien rights for parties without a direct contract with the owner. A notice of completion is recorded by the owner and starts a different clock. The licensing board plays no role in lien rights, and a lien claimant does not need the general contractor's permission.

A landscape plan legend lists a symbol with the notation QUAG 24 box, 7. What does this most likely convey?

• a.A 24-inch root ball depth and a seven-gallon container size
• b.A quantity of 24 plants installed in the seventh planting phase
• c.A species abbreviation, container size, and quantity of that plant✓
• d.A 24-foot spacing for seven plants of that species

Plant schedules commonly pair an abbreviated botanical name with the specified container size and the quantity to be installed, which is what these three entries represent. Reading 24 as the count reverses the fields. Neither the spacing nor the root ball depth is what a box designation and a plant count describe.

Two bidders quote the same landscape job and one is 30 percent lower. What should the owner most reasonably suspect?

• a.The bidders are not pricing the same scope, materials, or quantities✓
• b.The lower bidder has more efficient crews and better buying power
• c.The lower bidder is including a larger contingency in the price
• d.The higher bidder is charging an unlawful markup on materials

A gap that large almost always means the two bids cover different scopes, plant sizes, base depths, or quantities, so the first step is comparing the takeoffs line by line. Efficiency rarely produces a thirty percent difference. There is no unlawful markup limit on private work. A larger contingency would raise a bid rather than lower it.

Which document set is a contractor pricing from when it prepares a quantity takeoff?

• a.The owner's verbal description of the desired result
• b.The specifications alone, since dimensions may change
• c.The plans alone, since specifications describe intent only
• d.The plans and specifications, read together✓

Plans give geometry and location while specifications give materials, installation standards, and quality, and a takeoff needs both. Pricing from plans alone leaves material quality open. Pricing from specifications alone leaves quantities undetermined. A verbal description gives neither and cannot be the basis of a binding price.

A landscape project will require grading, a retaining wall, and a new gate in a public sidewalk area. Which permits should be assumed?

• a.No permits, since the work is entirely landscape improvement
• b.A single building permit covering the entire landscape scope
• c.Only an encroachment permit, since the other work is on private land
• d.Grading and wall permits plus an encroachment permit✓

Different scopes trigger different approvals, so grading and a retaining wall are permitted through the local building or engineering department while work in the public right of way requires an encroachment permit. A single blanket permit is not how jurisdictions handle these. Landscape work is not automatically exempt, and the private-side work still requires its own permits.

A schedule is being built for a landscape installation. Which sequencing constraint most often drives the timeline?

• a.The date the owner selects the final paver color
• b.Inspection holds on grading and underground work before cover✓
• c.The delivery date of the mulch for the planting beds
• d.The availability of a plate compactor from the rental yard

Work that must be inspected before it is covered controls the schedule, because a missed or failed inspection stops everything downstream. Mulch is a late and readily available item. Compactors are widely available. Color selection matters for procurement but rarely holds the critical path the way an inspection hold does.

An estimate includes a contingency line. What is it for?

• a.The markup applied to subcontractor quotations
• b.Profit that will be recognized only if the job finishes early
• c.Cost exposure from conditions that cannot be fully known at bid time✓
• d.The cost of warranty work expected during the first year

A contingency covers risk such as unknown subsurface conditions or minor scope uncertainty that the estimator can anticipate in aggregate but not itemize. Profit is a separate line. Warranty is a distinct reserve. Subcontractor markup is applied directly to those quotes rather than carried as contingency.

A trench 60 feet long, 2 feet wide, and 18 inches deep must be excavated. What volume of soil comes out, before bulking?

• a.About 6.7 cubic yards✓
• b.About 10.0 cubic yards
• c.About 3.3 cubic yards
• d.About 4.4 cubic yards

Sixty by two by one and a half feet is 180 cubic feet, which divided by 27 is about 6.7 cubic yards. The 4.4 figure corresponds to a one-foot depth. The 3.3 figure corresponds to a nine-inch depth. Ten cubic yards would require a trench well over two feet deep at the same length and width.

Why does excavated soil occupy more volume in the truck than it did in the ground?

• a.Because moisture is added during loading and handling
• b.Because the soil bulks up as excavation breaks its compacted structure✓
• c.Because trucks are measured in loose yards and trenches in tons
• d.Because the surveyor measures trench volume to the outside of the stakes

Excavation loosens soil and introduces voids, so bank volume expands into a larger loose volume, which is why haul-off is estimated with a swell factor. Loading does not meaningfully add water. Both trench and truck volumes can be expressed in cubic yards. Stake placement is a layout detail, not a volume effect.

A landscape estimate lists 340 linear feet of edging and 12 hours of equipment time. What are these called on a bid form?

• a.Overhead items, since they support the whole job
• b.Quantities from the takeoff, priced at unit rates✓
• c.Allowances, since the exact figures may change
• d.Contingencies, since they depend on field conditions

Measured quantities multiplied by unit prices are the core of a takeoff-based bid. An allowance is a placeholder dollar amount for undecided scope. A contingency is a reserve for unknowns rather than a measured item. Overhead exists whether or not this job runs and is not measured off the plan.

A landscape maintenance agreement is being priced for a full year. What is the most reliable basis?

• a.The square footage of the property multiplied by a published rate
• b.The price the previous contractor charged, reduced slightly
• c.The hours the crew spent on the last similar property in July
• d.A task-by-task schedule of visits with hours estimated for each season✓

Maintenance labor varies by season and by task, so building the year from a defined visit schedule with seasonal hours produces a price that holds. A single peak month overstates the year. Square footage alone ignores what is actually on the site. Undercutting the prior price prices the competitor's guess rather than the work.

A contractor wants to know whether a completed job made money. Which practice provides that answer?

• a.Comparing revenue for the year to overhead for the year
• b.Counting the days the crew spent against the calendar schedule
• c.Reviewing the deposit history against the contract price
• d.Comparing actual job costs to the estimate line by line✓

Job costing sets actual labor, material, and subcontract costs against the estimated figures and shows exactly where the job gained or lost. Annual revenue against overhead measures the company, not the job. Deposit history tracks cash flow. Days against schedule measures duration without saying what was spent.

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