Storage Requirements, waste disposal and scaffolding

how far does materials need to be from a hoistway

at least 6 ft (hoistway is an elevator shaft)

how far does material need to be from exterior walls

at least 10 ft

when does bagged material need to be cross-bagged

when pile reaches 10 bags high

max height for brick stacks

7 feet

every brick stack over 4 ft______

has to be tapered back 2” for every additional foot

max height for masonry stacks

20 ft or if being handled manually 16 ft

wire rope can’t be used if _______

the # of broken wires on a 8 x diameter-long strand exceeds 10% of the total wires in the strand

waste must be in an enclosed chute if dropped from a height of _____

20 ft or higher

when dropping material through holes in the floor ________

a 42 “ high barricade must be installed 6’ back from the drop site

point of operation

where a machine is being used/ material crafted on

for what machines are point operation guards used

hand tools like guilotine cutters, shears, alligator shears, power presses, milling machines, power saws, jointers, portable power tools

max psi for compressed air used for cleaning purposes

30 PSI

PSI required for nailers, staplers to have a safety device

100 PSI

safety guards on grinding machines should cover….

spindle end, nut, and flange projections

maximum angular exposure of a grinding wheel

90 degrees

how should gas cylinders be stored

upright

oxygen cylinders should be separated from fuel gas cyclinders/combustible materials by at least ______

20 feet or noncombustible 5 feet

what needs to be done before connecting a regulator to a cylinder valve

cracking; valve cracked slightly open and some gas released

when is an air respirator needed for welders

when proper ventilation can’t be provided without blocking the means of access in the trench

each scaffold should support _____ its max load

4x

minimum width of scaffold

18”

max distance from the face to scaffold outrigger

3”

max distance from scaffold to building face when applying stucco

18”

each end of scaffold should extend ______ over scaffold support

6”

scaffolds w/ height to base ratio greater than ____ must be restrained

4:1

for scaffolds 3ft wide or less reinforcement needed every ____

20 ft

scaffolds 3 ft wide or more, reinforcement needed every_____

26 ft

who needs to supervise the erection of a scaffold

a competent person

caternary scaffold

hanging platform with rope on each corner