E1 Flashcards
Ladders and scaffolding
a stairway must be provided to each new floor before work starts on that level true or false ?
true
temporary access ramps must be at least _____ wide with a max slope of ________
20in and 1:5
max spacing of cleats on a sloped ramp is
400mm
walkways must be a minimum of ______ wide
500mm
temporary stairs require hand rails when
there are more than 4 risers
using part 4 of the O.H.S the top rails must be able to
withstand a point load of 125lbs in any direction, span no more than 8ft, or 10 ft for scaffold, and be between 40 - 44” above the travel and work surfaces
what’s the minimum width of a wooden scaffold plank?
235mm or 9 1/4”
what’s the minimum height of a guardrail
40in
above what height does a scaffold require a guardrail
10ft
what’s the max that a scaffold plan can project beyond its support
12”
what’s the max span for a wooden guardrail?
up to 8ft for 2x4 and up to 10 ft for 2x6
what’s the max slope, vertical to horizontal, that’s allowed for a work platform
1:5
what’s the max gap allowed under a toeboard
1/2 “
what’s the min width allowed for a scaffold work platform?
2 plank widths
what’s the min amount that a scaffold plank may project beyond its supports
150mm or 6in
what’s the max spacing allowed for supports or scaffold planks of the scaffold is to be used by a bricklayer?
7ft or 2100mm
the type of nail used in the construction of wooden scaffold is
duplex
best length of nail to use if the ledge is 19mm is
2 1/4
best location for the 38x140mm bearer may have in light duty work is
5ft or 1500mm
the minimum size that a bearer block is allowed to be is
2x6 or 38x140 mm
the minimum size of lumber used for toeboards is
1x4 or 19x89mm
an 89x89mm (4x4) upright is required
When the height of the scaffold exceeds 6m or 20ft
the maximum distance between the horizontal building ties is
21ft or 6.4m
What are the 2 basic structural components of steel scaffolding?
end frame and braces
bolts or pins must be placed through the end frames when the scaffold is higher than 1 unit. true or false ?
true
the All round scaffolding system uses a
rosette and wedge
the Allround system requires an
adjustable base and collar
handrails and midrails in the Allround system
are automatically set by the Rosettes
minimum width of a swing state platform is
20”
thrust out beams supporting swing stages must be counter balanced with weights equal to
4 times the static load
hangers or stirrups used to support swing stages must be made from
mild steel or similar
max load on a swing state suspension rope must not exceed
1/10 of its breaking strength
19mm (3/4”) synthetic rope for suspending a swing stage must have a breaking strength of
22kN (5000lbs)
wire rope used to suspend swing stages must provide a safety factor or not less than
10
the length of a suspension rope must be enough to provide for
a safe lower landing
a hard tire scissor lift may only be us3d
on hard smooth surfaces
before using a scizzor lift for the first time
get training, check maintenance and controls and look for hazards, review operators Manuel
side rails shall be _____ for ladders up to 5m (16ft) long
2x4
side rails must be ________ for ladders up to 24ft long.
2x6
cleats must be _________ for ladders up to 16ft long.
1x3
cleats must be ________ for ladders up to 24 ft long
1x4
Is it safe practice to notch out side rails for cleats
no never could be dangerous
What’s the distance that should be between the side rails?
15-20 “ or 380- 500mm
How many workers are aloud on a ladder back scaffold at 1 time?
2 max
What type of work is ladder jacks made for ?
light duty and short duration work
How wide can the work platform be for ladder jack scaffolding ?
12” wide
if a manufactured scaffold is used it may span up to ______ between supports
7.3m or 24ft
if a lumber planks used on ladder jack scaffolding how wide can it be ?
must be 2x12 and supported every 3m or 10ft
workers must tie off after ________ ft
10
