LADDERS Flashcards
ladders can cause… due to …..and…..
harm/death, size/weight
name 2 conditions that make ladders more dangerous
wind/ bad weather
how far away from structure should the 135 ladder be positioned horizontally?
1/3 of working height
name and explain the 3 movements on a ladder
1) PAWLS (when descending ladder the pawl mechanism is approaching so ladder will narrow to foot)
2) STEP IN (when descending ladder the overlap of extensions is approaching, so person steps deeper on rounds to stay on ladder)
3) 3,2,1,STEP OFF (when descending, person manning ladder guides descender the final 3 steps and says step off on final to floor (not using jerk beam as step)
what are strings on ladder
sides of ladder
what are rounds of ladder
cross member of ladder, used to climb
what Is the head of ladder
highest point of ladder
what is the heel of ladder
lowest point of ladder
what is the extending line on ladder
used to extend ladder (a line/rope)
what is ‘plumming” on a ladder
moves the head of ladder without resetting heel using the screw down jocks, make sure ladder even on slopes/uneven ground
what are skrew down jacks on a ladder
circular handles on jerk beem used to plum ladder)
what are quadrants on a ladder
circular stops on jack beem, rest on floor when ladder horizontal on ground
what are jack pads on a ladder
rubber tips fitted to heel of screw down jocks
what are non skid shoes on a ladder
timber/metal tips on the heel of ladder to protect strings
what is the jack beam on a ladder
metal beam fitted to heel of 135 ladder
what are prop poles
poles attached at head of main ladder of 135 to manoeuvre/stabilise
what is the Auto Arrest Devise on 135 ladder
at top of ladder cable mechanism to prevent uncontrollable ladder descent
what are the head rollers on a ladder
wheels at top of ladder to aid 135 ladder pitch in difficult environment/situations
what is the top, middle,bottom of a 135 ladder
the 3 extending parts of a ladder
what does extend mean when using ladders
raise extending portion of ladder
what does extend to lower mean when using ladders
raise extending portions of ladder to clear pawls for clearing
what does Head in/Out mean when using ladders
place head of ladder into/away from structure
what does Heel in/Out mean when using ladders
moves heel of ladder towards/away from structure
what does house mean when using ladders
restrict extending portion of ladder
what does pitch mean when using ladders
erect ladder against structure
what does under run mean when using ladders
to take ladder from horizontal to vertical and vice versa
what is the pawls on a ladder
used to take weight off extending line after extension and to keep the rounds off each ladder section
what are the prop clips on a ladder
clips where props sit when on appliance and through carrying before taken out of under running
