|
Home > Preview
The flashcards below were created by user
sentpar
on FreezingBlue Flashcards.
-
What are the maximum practicle heights of the following mobile scaffolding? What type of support does it use? Castor Type & Farm Wagon Type
- Castor type can be maximum 9 meters (30 feet) with outrigger support
- Farm wagon has maximum height of 7.5 meters (25 feet) resting on outriggers
-
What is the height to width ratio for scaffolding?
Height: width would be 3:1
-
Under what circumstances can the height to width ratio for scaffolding be surpassed?
The 3:1 ratio (4:1 in notes) can be surpassed if it is tied to building, equipped with outrigger stabilizers to maintain ratio, or equipped with suitable guy wires
-
What is the minimum load capacity of platform for general construction work? For masonry construction work?
- Construction work the platform needs to support 50 lbs/sqft
- Masonry construction work the platform needs to support 150 lbs/sqft
-
What is the maximum allowable free fall distance?
6 feet
-
What is the general trend of work related fatalities and injuries?
Injuries are decreasing and fatalities are increasing
-
In what industries are the raw fatalities low, but the fatalities per 100000 full time equivalent workers is the highest?
Farming, fishing and forestry
-
What are the leading cause of construction fatalities?
falls
-
Hazards must be eliminated via
- engineering control
- work practice control
- and PPE
-
What is fall arrest system?
assembly of components of a system used to arrest a fall
-
What is the maximum allowable force that can be applied to the body during a fall arrest?
1800 lbs of force
-
What is the max distance a person is allow to decelerate?
Not more than 42 inches
-
What are the components of the fall arrest system?
- Anchorage system
- Body support
- Connecting means
- Rescue
-
Anchorage has to withstand a minimum force of _______. If designed by a qualified person, the anchorage system has to withstand ________.
- 5000 lbs
- 2 times the maximum arresting force.
-
What are three connection means between D-Ring and anchorage?
- Energy absorber
- self retracting lanyard
- fall arrestor connected to life line or rope lanyard
-
When can the free fall distance be increased more than 6 ft?
When a qualified fp person allows it.
-
The maximum arrest force of a 6ft Y lanyard and a 12 feet Y lanyard are...
- 6ft - 900 lbs
- 12ft - 1350 lbs
-
A self retracting lanyard limits free fall distance (vertical use) to _____ and maintains a tensile load of ________.
-
What is the difference between class A and B self retracting life lines?
- Class A is used for vertical use; limits free fall to 2 ft and average arrest force of 900 lbs
- Class B is used for horizontal lines; limits free fall to 4.5 ft and arresting force of 1350 lbs
-
Fall arrestors such as cable grab or grab rope must have arresting strength of _______.
3600 lbs
-
At what time would one require a ladder/stairway?
When an access point is above 19 inches
-
How much force does a top rail of stairs supposed to withstand?
200 lbs
-
When do stairwells require a handrail / stairwell?
- when 4 or more risers
- higher than 30 inches
|
|
Get the free mobile app
Take the Quiz
Learn more
Learn more