Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
116 Cards in this Set
- Front
- Back
An elevated temporary platform? |
Scaffold |
|
3 Basic types of scaffolds? |
●Supported scaffolds ●Suspended scaffolds ●Aerial lifts |
|
Platforms supported by rigid, load bearing members, such as poles, legs, frames, and outriggers? |
Supported scaffold |
|
Platforms suspended by rope or other non-rigid, overhead support? |
Suspended scaffolds |
|
Such as "cherry pickers" or "boom trucks" ? |
Aerial lifts |
|
Employees working on scaffolds are exposed to what hazards? |
●Falls from elevation ●Struck by ●Electrocution ●Scaffold collapse ●Bad planking |
|
The contractor/owner is responsible for scaffold even if it is defective or mislabeled T/F ? |
True |
|
Fall hazards may occur when: |
●Climbing on/off scaffold ●Working on unguarded platforms ●Scaffold platform or planks fail |
|
PLANKING must be able to support its own weight and atleast ______ times the intended load? |
4x (this includes workers, tools, materials) |
|
If a worker can fall more than _____ft they should be protected by guardrails and/or PFAS |
10 feet |
|
Scaffolds and components must be inspected by a competent person before ______ ______ and after any _______ ? |
before each shift; alterations |
|
When scaffold is fully loaded, the plank cannot deflect more than _____ of the span? |
1/60 |
|
10 ft plank spans can have a maximum deflect of ______ inches on a scaffold? |
2" |
|
Workers can never work on scaffolds during storm or high winds T/F ? |
False, they can't unless a competent person can determine it is safe and employees are protected by PFAS and wind screens |
|
PLATFORMS shall be _____ inches from the work, unless using guardrails and/or PFAS? |
14 inches |
|
TOP RAILS should be ____ to ____ inches tall? |
38 to 45 inches tall (most common is 42") |
|
MIDRAILS shall be ______ between top rail and platform? |
halfway |
|
TOE BOARDS shall be atleast _____ inches high? |
3-1/2 inches |
|
Wooden planks need to be inspected & graded by an inspector who is certified by a lumber grading inspecting agency T/F ? |
True |
|
You do NOT have to be trained how to properly use PFAS? |
False |
|
PFAS includes: |
●Anchorage ●Lifeline ●Body harness |
|
Safety NETS shall be installed no more than _____ feet below the falling level? |
30 feet |
|
How to protect from falling objects? |
●Wear hard hats ●Barricade area below scaffold ●Use panels or screens for materials stacked above toe board ●Build canopy or erect a net below the scaffold |
|
PFAS can be used instead of guardrails on some scaffolds T/F ? |
True |
|
It is required to use both PFAS and guardrails on suspension scaffolds T/F ? |
True |
|
It is required to use PFAS on erectors and dismantlers where feasible T/F? |
True |
|
Clearance between scaffolds and INSULATED powerlines shall be as follows: |
< 300 volts 3ft > 300 volts to 50kV 10ft > 50kV 10 ft + .4" for each 1 volt or 50kV |
|
Clearance between scaffolds and UNINSULATED powerlines shall be as follows: |
< 50kV 10ft > 50kV 10ft + .4" for every 1volt or 50kV |
|
PLATFORMS shall be fully planked with no more than ____inch gaps? |
1 inch |
|
PLATFORMS shall be atleast _____ inches wide? |
18 inches |
|
Max width on a SUSPENDED scaffold is ______inches? |
36 inches |
|
Each abutted end of plank must rest on a separate support surface T/F ? |
True |
|
Overlap platforms must be at least ____ inches over supports, unless restrained to prevent movement? |
12 inches |
|
Scaffoling planks are not to be painted except on the ends of planks to indicated the wood grade T/F ? |
True |
|
Refers to the types of species of wooden boards to be used. |
Scaffolding grade wood |
|
3 MOST COMMON wooden species used for scaffolding that meet OSHA requirments are: |
●Sitka Spruce ●Douglas Fir ●Southern Yellow Pine
|
|
Advantages of manufactured wooden planks? |
●Longevity ●Stiffness & strength ●Resists splitting ●Certification (tested before leaving facility) ●Cost |
|
Scaffoling components used must match and be the same type T/F? |
True |
|
Scaffoling components used if similar metal shall not be used together; unless, a comletent person has determined that _______ action (chemical reaction) will not reduce the strength of any components? |
galvanic action |
|
The HEIGHT of the scaffold should not be more than ______ times it's minimum base dimension unless guys, ties, or braces are used? |
4x |
|
Each end of a platform, unless cleated or otherwise restrained by hooks, must extend over its support by at least _____ inches? |
6 inches |
|
Scaffoling supports have to be able to support the load without _______ or displacement? |
settling |
|
Scaffoling poles, legs, posts, frames and uprights must be on _____ _____ and _____ _____ or other firm foundation? |
base plates & mud sills |
|
Access to scaffolds must be provided when platforms are more than ____ft above or below a point of access? |
2 feet |
|
Permitted types of access to scaffolds: |
●Ladders ●Stair towers ●Ramps and walkways |
|
A structual block used at the end of the platform to prevent the platform from flipping? |
Cleat |
|
When using ladders for access to a scaffold, the bottom rung can be no more than _____ inches high? |
24 inches |
|
Crossbraces can be used for access to a scaffold T/F ? |
False, no access by crossbraces |
|
Some end frames can be used for access onto a scaffold T/F ? |
True |
|
You can access from one scaffold or hoist to another T/F ? |
True |
|
All suspension scaffold support devices (outriggers, clamps, hooks), shall rest on surfaces capable of supporting at least ______ times the load |
4x |
|
Any gasoline powered equipment and hoist cannot be used on suspension scaffoling T/F ? |
True |
|
Ropes that suspend scaffolds must be capable of supporting _____ times the load |
6x |
|
PFAS must have anchors independent of the scaffold support system T/F ? |
True |
|
A competent person must be on site to supervise moving scaffolds T/F ? |
True |
|
What is the height to base ratio on a moving scaffold? |
2 to 1 |
|
Workers can't be on a MOVING SCAFFOLD unless: |
●Surface is level ●Height to base ratio is 2 to 1 ●Outriggers are installed on both sides of scaffolds |
|
Why should you NOT use shore or lean-to Scaffolds? |
Because they are: ●Not fixed ●Not securred |
|
A supported scaffold which is placed against a building or structure and held in place with props? |
Shore scaffold |
|
A supported scaffold which is kept erect by tilting it toward and resting it against a building or structure? |
Lean-to scaffold |
|
Gears and breaks on a moving scaffold must be enclosed because it is considered rotating equipment that must be guarded T/F ? |
True |
|
Tag lines must be used on swinging loads T/F ? |
True |
|
When overhead bricklaying from a supported scaffold a guardrail or PFAS is NOT required on all sides including the side where the work is being done T/F ? |
False, guardrails or PFAS is required on all sides except the side where the work is being done |
|
A person capable of identifying and promptly correcting hazards |
Competent person |
|
In regards to scaffoling A Competent Persons Responsibilities are: |
●Identifies and corrects hazards ●Determine if it's safe to work on scaffolds during bad weather ●Trains workers to recognize hazards ●Selects qualified workers |
|
Fabricated scaffoling frames must be designed by a registered engineer (also known as PE) after they are over 100 ft T/F ? |
False, after they are over 125 ft |
|
Scaffold Training must include: |
●Electrical, fall, & falling object hazards ●How to deal w/ electrical hazards and fall protection systems ●Proper use of the scaffolds ●Load capacities |
|
Retrain under 3 different conditions: |
1) any changes at the work site that prevent a hazard which an employee has not previously been trained
2) changes in types of scaffoling fall protection, falling object protection, or other equipment that presents a hazard if employee has not previously then trained
3) when inadequacies in an effective employees work involving scaffold indicates that the employee has not obtained the required sufficiency (when an employee continues to work unsafe on a scaffold) |
|
Main Hazards of Scaffolds: |
●Falls from elevation ●Bad planking ●Scaffold collapse ●Getting struck by falling objects ●Electrocution |
|
Operated by a liquid moving in a confined space under pressure? |
Hydraulic |
|
Containing or operated by air or gas under pressure. |
Pneumatic |
|
Bursting Safety Factor shall apply to all critical _______ and _______ components? |
hydraulic and pneumatic |
|
Who determines the load capacity for aerial lifts? |
Manufacturer |
|
Only trained and authorized persons are allowed to operate an aerial lift T/F ? |
True |
|
When should a pre-start inspection be conducted on aerial lifts? |
Prior to each work shift |
|
Any vehicle mounted device used to elevate personnel? |
Aerial lift |
|
Means an obstruction to deter the passage of persons or vehicles ? |
Barricade |
|
These are the warnings of a hazard, temporarily or permanently affixed or placed at locations where hazards exist ? |
Signs |
|
Moving signs, provided by workers such as flaggers, or by devices such as flashing lights to warn of possible or existing hazards ? |
Signals |
|
Temporary signs, usually attached to a peice of equipment or part of a structure to warn of existing or immediate hazards? |
Tags |
|
Signs used only where there is an immediate hazard. It's predominant color is ______? |
Danger Signs; red |
|
Signs that warns against potential hazards and unsafe conditions. The predominant color is ______? |
Caution Signs; yellow |
|
The letters on an EXIT sign cannot be less than _____ inches high and at least _____ of an inch wide? |
6 inches high ; 3/4 of an inch wide |
|
Signs that are white with a green upper panel with white letters to convey the principle message ? |
Safety signs |
|
Signs that are white with a black panel and a white symbol? |
Directional signs |
|
Tags can be used in the place of, or substitution of a sign T/F ? |
False, tags cannot be substituted, or take the place of a sign |
|
Barricades is incorporated by reference to the MUTCD in what part? |
Part 6 of the MUTCD |
|
What is the difference between a sign and a tag? |
Tags are temporary and signs are permanent |
|
Name 3 different types of signs/tags used in construction? |
Caution Sign Danger Sign Traffic Sign |
|
What is the predominate color on a caution sign? |
Yellow |
|
Warning garments worn at night shall be of _______ material ? |
retroflective |
|
MUTCD ? |
Manual on Uniform Traffic Control Devices |
|
Are those that operate within an off highway job site, not open to public traffic |
Motor vehicle |
|
Marine Operations and Equipment conform to the applicable requirments of what other safety and health requlations? |
Long shoring operations |
|
ROPS ? |
Roll Over Protective Equipment |
|
All ______ in use shall be checked at the beginning of each shift to assure that the following parts, equipment, and accessories are in safe operating condition? |
Vehicles |
|
The area along the waterfront edge of the pier? |
Apron |
|
The side of the ship above the upper deck? |
Bulwark |
|
The raised frame, as around a hatch way in the deck, to keep water out? |
Coaming |
|
A marine ladder of rope or chain with wooden or metal rungs? |
Jacobs ladder |
|
Means a light structure serving as a guard at the outer edge of a ships deck? |
Rail |
|
Means the loading, unloading, moving, or equipment & supplies, etc. into, in, on, or out of any vessel from a fixed structure or shore-to-shore vessel, vessel-to-shore or fixed structure or vessel-to-vessel |
Long shoring operations |
|
Subpart O |
Motor Vehicles, Mechanized Equipment, & Marine Operations |
|
What is Subpart L |
Scaffolds |
|
A white tag with white letters on red square ? |
DO NOT OPERATE tag |
|
A white tag with white letters on red square ? |
DO NOT OPERATE tag |
|
A white tag with white letters on red oval with a black square? |
DANGER tag |
|
Yellow tag with yellow letters on a black background? |
CAUTION tag |
|
White tag with white letters on a black background? |
OUT OF ORDER DO NOT USE tag |
|
What is the life expectancy on a Barricade? |
1 year |
|
Barricades and channeling devices warn and alerts drivers of changes and hazards to the following: |
● Roadway Ends ● Ramp or lane is closed ● Permanent or semi permanent closure or termination of a roadway |
|
Construction areas shall be posted with legible ______ signs at points of hazard? |
Traffic signs |
|
Hand signaling by flag men shall be by use of red flags at least _____ inches square or sign paddles, and in periods of darkness, ____ ____? |
18 inches; red lights |
|
Flag men shall be provided with and shall wear a ______ or ______ warning garment while flagging. |
red or orange |
|
Flagger garments shall be visible at a minimum distance of _______ feet? |
1,000 ft |
|
What is the best way to control vehicle speed? |
Governing engine machines |