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15 Cards in this Set
- Front
- Back
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What are the 2 types of ladders carried on MFB appliances? |
-Combination ladder (height varies) -Extension ladder (8.8m) |
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What are the different height settings for the combination ladder? |
Trestle height 1.29m Step ladder height 1.86m Max extension 4.2m |
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PPC must be worn when undertaking ladder operations. True or false? |
True |
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When siting/positioning a ladder, what 3 things MUST be considered? |
3 Ps: -Plumbing (ladder is in a vertical position, not skewed left or right) -Projection (foot is the correct distance from wall/building) -Pawls (safety pawls are engaged) |
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Can gear be carried up/down the ladder? |
No. Only a rope line can be taken. |
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When is it ok for a ladder not to be footed? |
When it is tied off or projected through a window. |
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Before slipping a ladder, what should be considered? |
-6m clearance behind appliance -2 person operation -control removal from appliance |
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Ladders should be footed at all times when someone is climbing. True or false? |
True |
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What must be considered in order to safely site a ladder? |
-height -projection (foot is the correct distance from wall/building) -plumbing (ladder is upright, not skewed left or right) -clearances (overhead wires, signs, hazards) -ground condition (ground is not too wet/soft. Wind conditions considered) |
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What are some considerations when climbing and dismounting the ladder? |
-minimum 3 rungs over objective/ledge -square gait is used -3 points of contact are kept -body weight central to rung |
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What is the construction of the MFB extension ladder? |
-8.8m height -fibreglass and aluminium -1 fly section -base section -brackets at head and foot -pawls mounted at the head of the base section -extension rope on side of string -‘D’ shaped aluminium rungs -2 wheels at head if ladder -metal gravel spikes |
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What are the maintenance considerations for MFB/CFA ladders? |
-Check rungs for tightness -check strings and rungs for deformation, cracks, splinters etc. -keep rungs clear of mud/debris -feet for excess wear -locking assemblies for correct operation -clean with soapy water -oil locking devices from time to time |
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What is the construction of the CFA extension ladder? |
-9m height -aluminium -fly and base sections -safety pawl and extension rope in the middle of rungs -strings and round rungs |
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What is the construction of the CFA extension ladder? |
-9m height -aluminium -fly and base sections -safety pawl and extension rope in the middle of rungs -strings and round rungs |
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What is the correct projection when siting a ladder? |
-4:1, or 75 degrees from base to ground -3-5 rungs over objective |
