Health And Safety Test 2 Flashcards by Victor Mendez

When using a crane to lift a 12,000-gallon tank out of an excavation, what is the preferable position of the rigging lines attached to the tanks lifting eyes?

A. One lifting line should be horizontal.

B. The lifting lines should be as far apart as possible.

C. The lifting lines should be as horizontal as possible.

D. The lifting lines should be as vertical as possible.

Lifting eyes are just hoist rings for vertical lifting in-line with the threaded bolt attached to the ring.

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Which of the following defines surface
ACM?

A. Material that contains more than
1.000% asbestos.

B.Material that contains more than
0.100% asbestos.

C. Material that contains more than
0.010% asbestos.

D. Material that contains more than
.001% asbestos.

A. Material that contains more than
1.000% asbestos.

ACM = asbestos-containing material
(any material containing more than one percent asbestos)

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When must a contractor provide and require the use of protective clothing?

A. When Class-Il work requires removal of ACM exceeding 10 square feet.

B. When airborne exposure exceeds the
TWA and excursion limits.

C. When Class-II work requires removal of TSI exceeding 25 linear feet.

D. When a negative exposure assessment is produced.

B. When airborne exposure exceeds the
TWA and excursion limits.

ACM = asbestos-containing material
(any material containing more than one percent asbestos).
TWA = time-weighted average. No
emplovee may be exposed to an airborne concentration of asbestos greater than
0.1 fiber per cubic centimeter of air as an eight-hour time-weighted average.
TSI - thermal system insulation, meaning ACM that has been applied to pipes, fittings, boilers, breeching, tanks, ducts, or other structural components to prevent heat loss or gain
Class-II work = activities involving the
removal of ACM that are not thermal system insulation or surfacing material.
These include, but are not limited to, the removal of asbestos-containing wallboard, foor tile and sheeting, roofing and siding shingles, and construction mastics.
EL = excursion limit. No employee may
be exposed to an airborne concentration of asbestos greater than one fiber per cubic centimeter of air (1 f/cc) as averaged over a sampling period of thirty minutes,

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Which of the following hazards is of the greatest concern when storing gas cylinders?

A. vibration

B. electromagnetic static

C. prolonged freezing weather

D. undue absorption of heat

Some authorities recommend exposure of no more than 125° F (50° C). [Even that seems high, especially considering the consequences of an explosion or release of the relief valve.]

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When using a cut-off saw to cut steel beams, which of the following should be worn?

A. gloves and a face shield

B. a face shield and a leather apron

C. gloves and a welding helmet

D. a leather apron and gloves

A. gloves and a face shield

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In the interest of safety, what should be done when there is a break or change of elevation of 18inches or more in a hallway floor?

A.Postpone work until the permanent stairway is completed

B. Post a warning sign at least 8 inches ×
10 inches in size.

C. Provide a ladder, ramp, or temporary stairs.

D. Provide cautionary tape barriers.

C. Provide a ladder, ramp, or temporary stairs.

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According to Cal/OSHA, the top handrail around scaffolding should be at what
MINIMUM height?

A. 36 inches

B. 38 inches

C. 42 inches

D. 48 inches

C. 42 inches

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Where must the emergency control be installed for a refrigeration room?

A. immediately next to the exit door of the building

B. immediately outside the refrigeration room’s exit

C. within 10 feet of the main control panel

D. within 25 feet of the main control panel

B. immediately outside the refrigeration room’s exit

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At what point during construction must interior handrails be installed in a custom two-story home?

A. before the final inspection

B. before the floor coverings

C. before the second story is finished

D. before the drywall and after framing

A. before the final inspection

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According to the California Building Code, what is the MINIMUM width of a gate used for disabled access?

A. 36 inches

B. 40 inches

C. 44 inches

D. 48 inches

A. 36 inches

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A fire extinguisher rated at least 2A must be provided for each ________ square feet of the floor area, or fraction there of.

A. 1,000

B. 2,000

C. 3,000

D. 4.000

C. 3,000

The “2A? rating refers to the size of the extinguisher. For Class A, the rating is for a fixed amount of water (1-1/4 gallons).
So 2A = 2 × 1-1/4 gallons of water, or 2-1/2 gallons. That means this extinguisher is just as effective as 2-1/2 gallons of water.

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A fire extinguisher rated 20B has enough extinguishing agent to provide _________________ of coverage.

A. 20 gallons

B. 20 square feet

C. 20 pounds

D. 20 bushels

B. 20 square feet

The “20B” rating refers to the area that the extinguisher can cover. So, provided that the nozzle is swept side-to-side during use, there is enough extinguisher to cover 20 square feet.

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Travel distance from any point of a protected area to the nearest fire extinguisher may not exceed:

A. 75 feet

B. 100 feet

C. 150 feet

D. 200 feet

A. 75 feet

A garden hose no longer than 75 feet
can substitute for a 2A extinguisher.

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Portable fire extinguishers must be inspected at least __________ and serviced at least __________ by a person licensed or registered by the State Fire Marshal.

A. hourly … monthly

B. daily … monthly

C. weekly … yearly

D. monthly … yearly

An inspection is meant to be a “quick check’ to see if it is still there and appears to be working.

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A harmful, irritating, or nuisance material that is foreign to an environment is generally known as a(n):

A. alien

B. interloper

C. contaminant

D. toxin

C. contaminant

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An area in which certain work may take place WITHOUT the use of guardrails, personal fall arrest systems, or safety nets is called a(n):

A. controlled access zone (CAZ)

B. free access zone (FAZ)

C. limited access zone (LAZ)

D. illegal zone

A. controlled access zone (CAZ)

Access to the zone must be controlled.

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A plank with cleats is commonly known as a(n)…

A. Pirate Ladder

B. Chicken ladder

C. Cleater

D. Cheater

B. Chicken ladder

Also known as a “crawling board.” The cleats must be equally spaced.

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Boards joined together side-by-side to line an excavation are collectively known as:

A. leading

B. following

C. lagging

D. running boards

C. lagging

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A flexible line to secure a wearer of a safety belt or harness to a drop line, lifeline, or fixed anchorage is called a(n):

A. lanyard

B. pinion

C. stanchion

D. thong

A. lanyard

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A container, with sides, in which materials are hoisted is commonly known as a(n):

A. yeet

B. skip

C. york

D. yurt

B. skip

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The ground area within _________ of a building under construction must be reasonable free from irregularities.

A. 3 feet

B. 6 feet

C. 9 feet

D. 12 feet

B. 6 feet

This can be accomplished by grading or similar methods. The same code section requires that ditches be bridged to provide passageways at convenient places.

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Personal protective equipment required by the Construction Safety Orders must be marked to facilitate identification of the:

A. employer

B. employee

C. date of origin

D. manufacturer

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What is an example of a type of personal protective equipment that does NOT have to be cleaned between uses by different employees?

A. facemasks

B. goggles

C. hardhats

D. metal foot guards

Safety devices worn over shoes or outer clothing, as long as they do not contact the skin of the wearer, need not be cleaned between different users.

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Structural members used for ramps and runways must be:

A. made of hardwood

B. made of hardened steel

C. must be reapproved by DOSH

D. must be of uniform thickness

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A stairway, ladder, ramp or other safe means of egress shall be located in trench excavations that are _______ feet or more in depth so as to require no more than ________ feet of lateral travel by employees. A. 4...25 B. 6 ...30 C. 7...35 D. 8...40

A. 4...25

Employees must not be exposed to atmospheres containing less than ________ oxygen and other hazardous atmospheres. A. 18% B. 19.5% C. 20% D. 20 ppm

B. 19.5% Precautions include providing proper respiratory protection or ventilation. There's such a thing as too MUCH oxygen, too: The upper concentration limit is set at 23.5%.

Where employees might be exposed to an atmosphere with a concentration of a flammable gas in excess of ________ of the lower flammable limit of the gas, appropriate precautions must be taken. A. 18% B. 19.5% C. 20% D. 20 ppm

C. 20% Providing adequate ventilation is one form of precaution.

If excavation or other materials or equipment can fall or roll into excavations like trenches, such materials or equipment must be kept at least _________ from the edge of excavations, or by the use of retaining devices, or by a combination of both methods, as needed A. 1 foot B. 2 feet C. 3 feet D. 4 feet

B. 2 feet

Daily inspections of excavations, the adjacent areas, and protective systems must be made: A. to discover signs of a potential cave-in B. to check for hazardous atmospheres C. to check on a potential failure of protective systems D. all of the above

D. all of the above These inspections are only required when employee exposure can be reasonably anticipated. Inspections must also be made after every rainstorm or other event that might reasonably pose a hazard.

Where employees or equipment must cross over excavations deeper than _________ and wider than _________, the employer must provide walkways or bridges with standard guardrails. A. 3 feet ... 24 inches B. 4 feet ... 24 inches C. 5 feet .... 30 inches D. 6 feet ... 30 inches

D. 6 feet ... 30 inches

Every open bin, bunker, hopper, and dangerous equipment whose upper edge is less than 36 inches above the floor or working level shall be equipped with a: A. standard railing around its edges B. portable fire extinguisher C. bucket of sand D. warning label

A. standard railing around its edges A grating or grill is also acceptable, provided that it has an opening of at least 10 inches.

Piles of material such as brick, tile, and masonry block must be stabilized against falling by the use of headers at least every _________ course. A. Other B. Third C. sixth D. tenth

C. sixth

Stacks of loose brick may not be piled higher than: A. 5 feet B. 6 feet C. 7 feet D. the height of the tallest worker

C. 7 feet

A stack of loose brick that reaches __________ high, or a stack of loose masonry block that reaches___________ high must be tapered back at the top. A. 3 feet... 5 feet B. 4 feet ... 6 feet C. 5 feet...7 feet D. 6 feet ... 8 feet

B. 4 feet ... 6 feet A stack of loose brick is tapered back 2 inches for every foot over 4 feet, and a stack of loose block is tapered a half block for every tier over 6 feet.

When piling bags of cement more than __________ high, the face of the pile must be tapered back. A. 4 feet B. 5 feet C. 6 feet D. 9 feet

B. 5 feet An exception is made if the bags are supported by walls or similar means. Or the bags may be tied horizontally to prevent the pile from collapsing.

Lumber piles that are to be handled manually may not be stacked higher than: A. 8 feet B. 10 feet C. 16 feet D. 20 feet

C. 16 feet The limit is 20 feet if the pile is NOT handled manually.

A crane with a boom consisting of a series of folding structural members that are connected by pins is called: A. articulating B. assisting C. accessory D. ambulatory

A. articulating They are typically manipulated to extend or retract by power from hydraulic cylinders.

A single-point adjustable suspension scaffold consisting of a seat or sling (which may be incorporated into a full body harness) is called a: A. coxswain's chair B. boatswain's chair C. sedia gestatoria D. gantry

B. boatswain's chair They are designed to support one worker at a time in a seated position. A boatswain BO-sun" or bosun was the foreman of a ship's deck crew, responsible for the care of the mast rigging, lines, sails, cordage, cargo rigging, etc. Perhaps the most famous boatswain was Smee in Peter Pan.

A device that typically uses a cable or chain, attached at each end, to move objects by means of leverage is called a(n): A. run-by B. horizontal lift C. counterweight D. come-along

D. come-along

A rope attached to a lifted load to control load spinning or to stabilize a bucket or magnet during material handling is called a: A. tagline B. jury rig C. pendula D. lagline

A. tagline

A person responsible for monitoring and communicating with an operator or driver is known as a: A.tender B. savant C. rigger D. Registered Professional Engineer

A. tender

When operating a powder-actuated tool, which of the following practices should be observed? A. Never point a loaded OR empty tool at any person. B. Load the tool just prior to using. C. If work is interrupted after loading the tool, unload it immediately. D. all of the above

D. all of the above Also, within 50 feet of where the tool is being used, you must post a sign at least 8 × 10 inches in size saying something like: CAUTION: POWDER-ACTUATED TOOL IN USE." (Remove the signs promptly when no longer applicable.)

If a powder-actuated tool misfires, what is the recommended procedure? A. drop it and leave the area immediately B. poke a stick into the device C. hold the tool firmly against the work surface for 30 seconds and then pull the trigger again D. hold the tool firmly against the work surface for 30 seconds and then follow the manufacturer's instructions

D. hold the tool firmly against the work surface for 30 seconds and then follow the manufacturer's instructions All the more reason to keep the manufacturer's information accessible: Instruction manuals, maintenance tools, and accessories supplied with the tool must be stored in the tool container when not in use.

Which of the following is an approved material for installing a powder-actuated fastener? A. cast iron, hardened steel, glazed tile, glass block, natural rock, hollow tile, or most brick B. closer than 1/2 inch from the edge ofsteel or 3 inches from the unsupported edge of masonry materials C. any spalled area D. none of the above

D. none of the above

Where the elevation is __________ or more, and when other types of fall protection are impractical, a structure must be provided with an approved safety net extending at least 8 feet horizontally and no more than 10 feet below where such hazards exist. A. 15 feet B. 20 feet C. 25 feet D. 50 feet

C. 25 feet The idea is that nets should have enough clearance to prevent the worker's contact with the surfaces or structures below.

The valve on a gas cylinder should be opened slowly to prevent damage to the: A. operator B. tank wall C. valve cap D. regulator

D. regulator

When working in areas in which a potential exposure to direct or reflected laser light is greater than ____________, employees must be provided with anti-laser eye protection. A. .005 watt (5 milliwatts) B. .010 watt (10 milliwatts) C. 1.000 watt (1000 milliwatts) D. [OSHA has no such requirement as yet.]

A. .005 watt (5 milliwatts) Anti-laser wrap-around glasses are not expensive and resemble sunglasses, but be careful to specify the intensity of the light and what type of laser is being used: e.g., red vs. blue laser. Some anti-laser glasses can provide protection against UV light as well.

The Operation of laser systems is PROHIBITED, where practicable, under which of the following conditions? A. when it is raining or snowing B. when the operator is color-blind C. when minors are present D. when the device is grounded

A. when it is raining or snowing Also prohibited when there is dust or fog in the air. If NOT practicable to stop laser operations, keep employees out of range of the laser source and target while these weather condition persist.

During demolition, when chutes are used to load trucks to haul away material: A. they must be painted safety yellow B. they must be fully enclosed for the lowest 10 feet C. they must be fully enclosed D. [chutes are prohibited]

C. they must be fully enclosed Also, gates must be installed in each chute at or near the discharge end.

No one is allowed to ride on loads, hooks, or slings of any: A. derrick B. hoist C. crane D. all of the above

D. all of the above

Masonry walls over __________ high must be adequately braced to prevent overturning or collapse unless the wall is adequately supported by its design and/or construction. A. 2 feet B. 4 feet C. 6 feet D. 8 feet

D. 8 feet The bracing must remain until permanent support is in place.

Cal/OSHA defines a "confined space" one that: A. is large enough and so configured that an employee can bodily enter it B. has limited or restricted means for entry and exit C. is not designed for continuous employee occupancy D. all of the above

D. all of the above

A "hazardous atmosphere' is defined by Cal/ OSHA as one that may expose employees to the risk of death, incapacitation, impairment of ability to rescue themselves, injury, or acute illness from one or more of the following causes: A. flammable gas, vapor, or mist in excess of 10 percent of its lower flammable limit (LFL) B. airborne combustible dust at a concentration that meets or exceeds its LFL C. atmospheric oxygen concentration below 19.5 OR above 23.5 percent D. all of the above

D. all of the above For combustible dust (Answer B), this means that vision is obscured at 5 feet or less. Oxygen above 23.5 percent is called an "oxygen enriched" atmosphere.

In temporary or emergency conditions where there is danger of emplovees or materials falling through floor, roof, or wall openings, or from stairways or runways, you must: A. guard floor, roof, and skylight openings by either temporary railings and toeboards or by covers B. post warning signs C. rope off the area D. shut down the job and call DOSH

A. guard floor, roof, and skylight openings by either temporary railings and toeboards or by covers

Boatswains' chairs, their supports, and all their accessories must be able to support at least _______ times the maximum load. A. 2 B. 3 C. 4 D. 5

C. 4

Float scaffolds may carry up to _____ employees and light tools at one time. A. 2 B. 3 C. 4 D. 5

B. 3 Typical tasks include riveting, bolting, and welding.

Float scaffolds must be at least _______________ in size A. 2 feet × 5 feet B. 2 feet × 6 feet C. 3 feet × 6 feet D. 4 feet x 8 feet

C. 3 feet × 6 feet

Supporting ropes for float scaffolds must be or its equivalent. A. 1/2-inch diameter Manila rope B. 3/4-inch diameter Manila rope C. 1-inch diameter Manila rope D. steel cable

C. 1-inch diameter Manila rope

Five gallons of water weigh: A. 8.5 pounds B. 5.0 kilograms C. 42.5 pounds D. 50.0 pounds

C. 42.5 pounds 5 gallons × 8.5 pounds/gallon =42.5 pounds

An upright bat, post, or frame forming a support or barrier is called a(n): A. albion B. muntin C. mullion D. stanchion

D. stanchion Stanchions are often used for crowd control, controlling the flow of people, and construction-site safety.

Compressed oxygen may NOT be used: A. to purge pipe lines, tanks, or confined areas, to supply head pressure in a tank, or to start internal combustion engines B. in pneumatic tools or oil preheating burners C. for "dusting" clothing or for ventilation D. all of the above

D. all of the above A high-oxygen environment promotes rapid combustion. The idea is that oxygen must not be used as a substitute for compressed air.

No internal combustion engine fuel tank may be refilled with a flammable liquid while: A. the engine is running B. a fire extinguisher is not present C. ambient temperature is above 70 degrees F D. it is more than half full

A. the engine is running

Wrist watches, rings, or other jewelry should not be worn: A. while working with or around machinery with moving parts in which such objects may be caught B. around electrically energized equipment C. both of the above D. neither of the above

C. both of the above

Compressor safety valves must be popped at least: A. hourly B. daily C. weekly D. monthly

C. weekly

Which of the following should NOT be used to open a container of explosives? A. wooden wedge B. wooden mallet C. rubber mallet D. steel ballpeen hammer

D. steel ballpeen hammer Tools used for opening containers of explosive materials must be made of non-sparking materials.

Smoking, open flames, or other sources of ignition are NOT allowed within ___________ of any area where explosive materials are being handled. A. 10 feet B. 25 feet C. 50 feet D. 100 feet

C. 50 feet Exceptions are made, of course, for devices necessary to ignite the fuses of set charges

What do all of the following have in common: pits, manholes, tanks, concrete pier columns, sewers, storm drains, enclosed beams, vessels, cesspools, and turbines? A. they require a DOSH permit to enter B. occupancy is prohibited for more than 30 minutes C. a flashing warning light must be posted outside the immediate work area D. they are places that may have confined-space conditions

D. they are places that may have confined-space conditions There are many more examples, of course.

If an employee is working with corrosive liquids, the employer must provide the following: A. personal protective equipment, an eyewash, and a deluge shower B. up-to-date safety data sheets and a written hazard communication (HAZCOM) program C. properly labeled containers D. all of the above

D. all of the above

A signal person who is working with a crane operator can be seen with both arms held horizontally to the side, palms down, and bending and extending the arms back and forth horizontally. This means: A. emergency stop B. raise the boom and lower the load C. travel/tower travel D. dog everything

A. emergency stop Ironically, this looks something like a baseball's "safe" signal.

Ground-fault circuit interrupters (GFCIs) as personnel protection are required for all 120V, AC, single-phase, 15- and 20-amp receptacle outlets on construction sites: A. that are NOT part of the permanent wiring of the building B. that ARE part of the permanent wiring of the building C. on an optional basis D. none of the above

A. that are NOT part of the permanent wiring of the building The GFCI is fast enough to protect the user, not necessarily the circuit wiring.

An employee presents with the following symptoms: inability to sweat, mental confusion, hot and dry skin, muscle spasms, rapid and weak pulse, throbbing headache, and temperature of 102-104 degrees. The employee probably suffers from: A. heat stroke B. heat exhaustion C. allergies D. cerebral stroke

A. heat stroke Heat stroke is a very serious condition. A victim may die within 30-60 minutes unless treated properly.

The employer must implement high-heat protective procedures when the temperature equals or exceeds: A. 72 degrees F B. 80 degrees F C. 85 degrees F D. 95 degrees F

D. 95 degrees F

In general, an employee shall not be allowed to stand and work on the top of the _____ rung of a single or extension ladder. A. 2nd B. 3rd C. 4th D. 5th

B. 3rd Exceptions are made if the structure affords a firm handhold or if the employee is protected by a personal fall protection system.

A ________ ladder is similar to a single cleat ladder, but it is wider, with an additional center rail underneath the cleats that will allow for two-way traffic for workers in ascending and descending, is called a: A. rail B. triad C. center-cleat D. double-cleat

D. double-cleat

Where ladders are allowed as a primary access or exit from a working area for _______ or more employees, or simultaneous two-way traffic is expected, double cleat ladders must be installed. A. 10 B. 20 C. 25 D. 50

C. 25

The maximum length of a STEP ladder is: A. 15 feet B. 20 feet C. 25 feet D. 30 feet

B. 20 feet The height limits of several types of ladders have been extensively revised and reorganized. See the table in the General Industry Safety Orders, Sec. 3276(e)(16)(D).

The maximum length of a TWO-SECTION WOOD EXTENSION ladder is: A. 30 feet B. 40 feet C. 50 feet D. 60 feet

D. 60 feet

The maximum length of a TWO-SECTION METAL EXTENSION ladder is: A. 38 feet B. 48 feet C. 58 feet D. 68 feet

D. 68 feet

The maximum length of a TWO-SECTION EXTENSION ladder made of REINFORCED PLASTIC is: A. 52 feet B. 62 feet C. 72 feet D. [disallowed]

C. 72 feet

A ladder permanently fastened to a structure is called a __________ ladder. A. fixed B. appurtenance C. foxed D. Jacob's

A. fixed A Jacob's ladder is a ladder with rigid rungs suspended between two vertical- chain or wire-rope stringers instead of rigid side rails. Traditionally used to board and disembark a ship, in construction (if it used to gain access to a barge or similar vessel) a bumper should be placed between the ladder and the vessel.

Ladder cleats must be: A. made from clear, straight-grained lumber B. nailed at each end to the side rails with three 10p nails or their equivalent C. blocked or notched into the side rails D. all of the above

D. all of the above

Single-cleat ladders must be __________________ wide. A. 12 inches to 16 inches B. 14 inches to 24 inches C. 15 inches to 20 inches D. 16 inches to 24 inches

D. 16 inches to 24 inches

Single-cleat ladders may NOT exceed _________ in length. A. 18 feet B. 20 feet C. 24 feet D. 30 feet

D. 30 feet

Double-cleat ladders may NOT exceed ____________ in length. A. 18 feet B. 20 feet C. 24 feet D. 30 feet

C. 24 feet

After ladders that have developed defects are withdrawn from service (for future repair or destruction), what is the next step? A. keep them in reserve for future use if needed B. paint them safety orange C. build a bonfire D. tag or mark them "DANGEROUS DO NOT USE"

D. tag or mark them "DANGEROUS DO NOT USE" Or words to that effect.

A location where there is a significant risk of being injured by flying particles, hazardous substances, projections or injurious light rays would most likely require ___________ protection. A. face or eye B. hand C. foot D. body

A. face or eye A Suitable screens or shields isolating the hazardous exposure may be considered adequate safeguarding for nearby employees.

A location where there is a significant risk of being injured by absorption of harmful substances, cuts or lacerations, abrasions, punctures, chemical burns, thermal burns, radioactive materials, and harmful temperature extremes would most likely require _________ protection. A. face or eye B. hand C. foot D. body

B. hand

A location where there is a significant risk of being injured by electrical hazards, hot corrosive and poisonous substances, falling objects, crushing or penetrating actions, or unusually wet locations would most likely require _______________ protection. A. face or eye B. hand C. foot D. body

C. foot

What is the MOST significant danger of wearing loose sleeves, tails, ties, lapels, cuffs, scarves, or other loose clothing while working on a construction site? A. they can get entangled in moving machinery B. heat exhaustion or heat stroke C. flammability D. your coworkers will make fun of you

A. they can get entangled in moving machinery

When workers are exposed to noise levels above _________ dB for eight hours or more during a work day, some form of hearing protection must be provided. A. 90 dBA B. 95 dBA C. 100 dBA D. 105 dBA

A. 90 dBA As the noise level goes up, less exposure time is allowed.

The "maximum permitted 8-hour time-weighted average concentration" of an airborne contaminant is called the: A. Permissible Exposure Limit (PEL) B.Short-Term Exposure Limit (STEL) C. Ceiling Limit D. Eight-Hour Time-Weighted Average Concentration (TWA)

A. Permissible Exposure Limit (PEL)

Prolonged or even high short-term exposure to crystalline silica can result in: A. silicosis, lung cancer, and COPD B.decreased lung function, immune system disorders, and kidney deficits C. increased chance of developing tuberculosis D. all of the above

D. all of the above Construction work that involves potentially harmful exposure includes blasting, drilling, sanding, grinding, loading, dumping, chipping, hammering, and cutting of rock, sand, or concrete.

Which of the following statements about toilets on a jobsite is NOT correct? A. Toilets are required for each 20 employees (or fraction thereof for each sex. B. Urinals cannot be substituted for toilets. C. Sites with fewer than 5 employees are not required to provide separate toilets for each sex. D. Toilets must be lockable from the inside.

B. Urinals cannot be substituted for toilets. Urinals may be substituted for up to half of the toilets. Where there are less than five employees, one single-user toilet facility designated for all-gender use is sufficient by code.

What do all of the following hand-held tools have in common? • hand-held powered circular saws with a blade diameter of more than 2 inches • electric, hydraulic, or pneumatic chain saws, and reciprocating saws • many percussion tools, powered drills, tappers, and fastener drivers • horizontal, vertical, and angle grinders with wheels greater than 2 inches in diameter • disc sanders with discs greater than 2 inches in diameter, and belt sanders • saber, scroll, and jig saws with blade shanks greater than 1/4 inch. A. dead-man (constant-contact) switch B. they require a DOSH permit C. they require a Certified Person D. absolutely nothing

A. dead-man (constant-contact) switch A dead-man switch or control shuts off the power when operator pressure is released.

Which of the following is NOT true about portable hand-held circular saws? A. They must be equipped with guards above and below the base plate or shoe. B. The teeth in the upper half of the blade must be permanently shielded from contact. C. The teeth in the lower half of the blade must be guarded with a telescopic or hinged guard. D. Blade guards may be prevented from operating automatically by OSHA-approved pins, wedges, or other devices that hold them back in an inoperative position.

D. Blade guards may be prevented from operating automatically by OSHA-approved pins, wedges, or other devices that hold them back in an inoperative position.