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Outcomes;

   Calculate scaffold quantities
   Identify scaffold duties
   Calculate Live and dead loads
   Calculate lengths of sole boards
Scaffold    Minimum Bay Maximum Bay Max hight
class           Size         Size    of lift
           Length Width Length Width
Light      0.45m 0.45m 3.0m     2.4m  2.0m
                   2 boards          10 boards

Medium     0.9m     0.9m      2.4m    1.8m       2.0m
                    3 or 4           8 boards
                    boards
Heavy       1.0m    1.0m      1.8m 1.275m        2.0m
                                     5 boards
Light duty – Minimum access through a scaffold. For persons with hand tools only.
Live load maximum 225kg per platform per bay. Maximum concentrated load per platform per bay
      100kg.

Used mainly by:
   Electricians
   Painters
   Window cleaners
   Light maintenance work

Medium duty – For persons with materials and hand tools.
Live load maximum 450kg per platform per bay. Maximum concentrated load per platform per bay
      150kg.

Used mainly by:
   Carpenters
   Welders
   Glaziers
   Plasterers/renderers

Heavy duty – For trades like brick layers and demolition contractors.
Live load maximum 675kg per platform per bay. Maximum concentrated load per platform per bay
      200kg.

Used mainly by:
   Brick layers
   Stone masons
   Demolition work
Scaffold Max load Per   Max concentrated
Class    Platform per   load Per Platform per
         Bay            Bay
                        (Should be over transom)


Light         225kg               100kg

Medium        450kg               150kg

Heavy         675kg               200kg
Hight of   Steel   Aluminium
   scaffold
Up to 15m      4         3

Up to 30m      3         2

Up to 45m      2          1
Total Dead load for scaffold   =
          1060kg
   Add up all components in the scaffold.
                 or = 1.06 Tonne
   To find total Dead Load multiply the quantity of
    the components by there known weight. Then
    add all the components weights together to give
    a total Dead Load.

Eg. Two 2 meters standards weigh 12kg each
    2 x 12 = 24kg
Dead load is the weight of the scaffold itself and
  it’s accessories used to construct it.

To calculate the Dead Load of the scaffold at any
  one point, you must:
   1.Calculate the quantity of scaffold that bears
    down at one point.
   2.Multiply the quantity by the weight of each
    component.
   3.Adjust the weight by finding the percentage
    of weight that is transferred to that one point.
Full weight   ½ weight   ¼ weight
Adjustable    Ledger      Planks
base plate
              Transom
Standards
              Bracing
Quantity   Weight     Adjusted
Component                      Length   Weight    A         A          A
Standard                       2.0m      12kg
Standard                       3.0m      18kg
Transom                         1.2m     8kg
Ledger/guard rail              2.4m      10kg
Brace end (1.2 bay)            2.0m      10kg
Brace face (2.4bay)            3.6m      17kg
Captive plank (225mm)           1.2m     10kg
Captive plank (225mm)          2.4m      20kg
Ladder access putlog/transom    1.2m     8kg
Adjustable base plate          750mm     7kg
Ladder                          4m       20kg
                                                   total dead load A
Quantity   Weight    Adjusted
Component                      Length   Weight      A         A          A
Standard                       2.0m      12kg        -                     
Standard                       3.0m      18kg        1        18        18 
Transom                         1.2m     8kg         2       16 ÷2       8 
Ledger/guard rail              2.4m      10kg        8       80 ÷2      40 
Brace end (1.2 bay)            2.0m      10kg        -                     
Brace face (2.4bay)            3.6m      17kg       1        17 ÷2      8.5 
Captive plank (225mm)           1.2m     10kg       -                      
Captive plank (225mm)          2.4m      20kg       10      200 ÷4      50 
Ladder access putlog/transom    1.2m     8kg        -                      
Adjustable base plate          750mm     7kg        1         7          7 
Ladder                          4m       20kg       -                      
                                                    total dead load A 131.5 




         Total Dead load for leg B = 99.5kg
The live load is the total amount of weight allowed on the
     scaffold that includes persons plus materials for each platform
     in each bay.

    To calculate the live load on one standard, we assume that each
     standard in that bay will only support a third of the live load of
     that bay. This allows for uneven distribution of the load across
     the working platform.

    Live load = 225Kg for a light duty scaffold per working
     platform.
                450Kg for a medium duty scaffold per working
     platform.
                675Kg for a heavy duty scaffold per working
     platform.

Live Load x No. of working platforms supported by the standard ÷ 3
                     Live load Leg A Medium Duty = 300kg
Soleboards are designed to distribute the weight of
  the scaffold evenly over the surface the scaffold is
  to be erected on.

  The size of the soleboard is dependent on the
   bearing pressure of the ground. Bearing pressure
   will be supplied to you by an engineer in kg per m².

    (LL)       (DL)
Live load + Dead load
 Bearing pressure       ÷ Width of Soleboard = Minimum
       (BP)                                 soleboards length
Live Load       = 300kg

Dead Load       = 131.5kg

Bearing Pressure=2.4 Tonne

Width of Sole Board=225mm

        LOST =               LL+DL ÷ WOS = Length of Sole Board
 (Length of sole board)        BP

                             300kg+131.5kg ÷ 0.225 =0.799
                               2400kg

= 0.80m, 80cm or 800mm
Do all variations of
    calculations from
 Assessment Instrument

OVER AND OVER!!!!!
Great Heights Scaffold Company           Number: 9991
                               HANDOVER CERTIFICATE
Each of the following must be completed by the responsible scaffolder:
1. Client: ________________________________________________________
2. Site address: ____________________________________________________
3. Scaffold location: ________________________________________________
4. Type of scaffold: Tube & coupler / Frame / Tower-frame / Modular / Other
                                 (Circle the appropriate type.)
5. Number of working platforms: ______________________________________
6. Duty category of working platforms; Light / Medium / Heavy / Special
                                 (Circle the appropriate type.)
7. Number of lifts above base lift: _____________________________________
8. Scaffold height: _________________________________________________
9. Number of bays long: _____________________________________________
10. Scaffold length: _________________________________________________
11. Type of access: Ladder / Stair / Ramp / Other(Circle the appropriate type.)
12. Design drawing reference: ________________________________________
13. Date of handover: _______________________________________________
14. Time of handover: _______________________________________________
15. Name of responsible scaffolder: ____________________________________
16. Signature of responsible scaffolder: _________________________________
Great Heights Scaffold Company           Number: 9991
                             HANDOVER CERTIFICATE

Each of the following must be completed by the responsible scaffolder:
1. Client: Slap It Up Constructions
2. Site address: 1001 sea View Street, Wollongong, NSW
3. Scaffold location: West Face of Building
4. Type of scaffold: Tube & coupler / Frame / Tower-frame / Modular /
     Other
5. Number of working platforms: One
6. Duty category of working platforms; Light / Medium / Heavy / Special
7. Number of lifts above base lift: Six
8. Scaffold height: 12 meters
9. Number of bays long: Ten
10. Scaffold length: 24 meters
11. Type of access: Ladder / Stair / Ramp / Other
12. Design drawing reference: TA / 1234
13. Date of handover: Today’s Date      Day/Month/Year
14. Time of handover: Now                   AM or PM or 24 hour
15. Name of responsible scaffolder: You
16. Signature of responsible scaffolder: Yours

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Scaffold classes and duties (cals)

  • 1.
  • 2. Outcomes;  Calculate scaffold quantities  Identify scaffold duties  Calculate Live and dead loads  Calculate lengths of sole boards
  • 3.
  • 4. Scaffold Minimum Bay Maximum Bay Max hight class Size Size of lift Length Width Length Width Light 0.45m 0.45m 3.0m 2.4m 2.0m 2 boards 10 boards Medium 0.9m 0.9m 2.4m 1.8m 2.0m 3 or 4 8 boards boards Heavy 1.0m 1.0m 1.8m 1.275m 2.0m 5 boards
  • 5. Light duty – Minimum access through a scaffold. For persons with hand tools only. Live load maximum 225kg per platform per bay. Maximum concentrated load per platform per bay 100kg. Used mainly by:  Electricians  Painters  Window cleaners  Light maintenance work Medium duty – For persons with materials and hand tools. Live load maximum 450kg per platform per bay. Maximum concentrated load per platform per bay 150kg. Used mainly by:  Carpenters  Welders  Glaziers  Plasterers/renderers Heavy duty – For trades like brick layers and demolition contractors. Live load maximum 675kg per platform per bay. Maximum concentrated load per platform per bay 200kg. Used mainly by:  Brick layers  Stone masons  Demolition work
  • 6. Scaffold Max load Per Max concentrated Class Platform per load Per Platform per Bay Bay (Should be over transom) Light 225kg 100kg Medium 450kg 150kg Heavy 675kg 200kg
  • 7. Hight of Steel Aluminium scaffold Up to 15m 4 3 Up to 30m 3 2 Up to 45m 2 1
  • 8.
  • 9. Total Dead load for scaffold = 1060kg  Add up all components in the scaffold. or = 1.06 Tonne  To find total Dead Load multiply the quantity of the components by there known weight. Then add all the components weights together to give a total Dead Load. Eg. Two 2 meters standards weigh 12kg each 2 x 12 = 24kg
  • 10. Dead load is the weight of the scaffold itself and it’s accessories used to construct it. To calculate the Dead Load of the scaffold at any one point, you must:  1.Calculate the quantity of scaffold that bears down at one point.  2.Multiply the quantity by the weight of each component.  3.Adjust the weight by finding the percentage of weight that is transferred to that one point.
  • 11. Full weight ½ weight ¼ weight Adjustable Ledger Planks base plate Transom Standards Bracing
  • 12. Quantity Weight Adjusted Component Length Weight A A A Standard 2.0m 12kg Standard 3.0m 18kg Transom 1.2m 8kg Ledger/guard rail 2.4m 10kg Brace end (1.2 bay) 2.0m 10kg Brace face (2.4bay) 3.6m 17kg Captive plank (225mm) 1.2m 10kg Captive plank (225mm) 2.4m 20kg Ladder access putlog/transom 1.2m 8kg Adjustable base plate 750mm 7kg Ladder 4m 20kg total dead load A
  • 13. Quantity Weight Adjusted Component Length Weight A A A Standard 2.0m 12kg  -     Standard 3.0m 18kg  1 18  18  Transom 1.2m 8kg  2 16 ÷2 8  Ledger/guard rail 2.4m 10kg  8 80 ÷2 40  Brace end (1.2 bay) 2.0m 10kg  -     Brace face (2.4bay) 3.6m 17kg 1  17 ÷2 8.5  Captive plank (225mm) 1.2m 10kg -      Captive plank (225mm) 2.4m 20kg 10  200 ÷4  50  Ladder access putlog/transom 1.2m 8kg -      Adjustable base plate 750mm 7kg 1  7  7  Ladder 4m 20kg -      total dead load A 131.5  Total Dead load for leg B = 99.5kg
  • 14. The live load is the total amount of weight allowed on the scaffold that includes persons plus materials for each platform in each bay. To calculate the live load on one standard, we assume that each standard in that bay will only support a third of the live load of that bay. This allows for uneven distribution of the load across the working platform.  Live load = 225Kg for a light duty scaffold per working platform.  450Kg for a medium duty scaffold per working platform.  675Kg for a heavy duty scaffold per working platform. Live Load x No. of working platforms supported by the standard ÷ 3 Live load Leg A Medium Duty = 300kg
  • 15. Soleboards are designed to distribute the weight of the scaffold evenly over the surface the scaffold is to be erected on. The size of the soleboard is dependent on the bearing pressure of the ground. Bearing pressure will be supplied to you by an engineer in kg per m². (LL) (DL) Live load + Dead load Bearing pressure ÷ Width of Soleboard = Minimum (BP) soleboards length
  • 16. Live Load = 300kg Dead Load = 131.5kg Bearing Pressure=2.4 Tonne Width of Sole Board=225mm LOST = LL+DL ÷ WOS = Length of Sole Board (Length of sole board) BP 300kg+131.5kg ÷ 0.225 =0.799 2400kg = 0.80m, 80cm or 800mm
  • 17. Do all variations of calculations from Assessment Instrument OVER AND OVER!!!!!
  • 18.
  • 19. Great Heights Scaffold Company Number: 9991 HANDOVER CERTIFICATE Each of the following must be completed by the responsible scaffolder: 1. Client: ________________________________________________________ 2. Site address: ____________________________________________________ 3. Scaffold location: ________________________________________________ 4. Type of scaffold: Tube & coupler / Frame / Tower-frame / Modular / Other (Circle the appropriate type.) 5. Number of working platforms: ______________________________________ 6. Duty category of working platforms; Light / Medium / Heavy / Special (Circle the appropriate type.) 7. Number of lifts above base lift: _____________________________________ 8. Scaffold height: _________________________________________________ 9. Number of bays long: _____________________________________________ 10. Scaffold length: _________________________________________________ 11. Type of access: Ladder / Stair / Ramp / Other(Circle the appropriate type.) 12. Design drawing reference: ________________________________________ 13. Date of handover: _______________________________________________ 14. Time of handover: _______________________________________________ 15. Name of responsible scaffolder: ____________________________________ 16. Signature of responsible scaffolder: _________________________________
  • 20. Great Heights Scaffold Company Number: 9991 HANDOVER CERTIFICATE Each of the following must be completed by the responsible scaffolder: 1. Client: Slap It Up Constructions 2. Site address: 1001 sea View Street, Wollongong, NSW 3. Scaffold location: West Face of Building 4. Type of scaffold: Tube & coupler / Frame / Tower-frame / Modular / Other 5. Number of working platforms: One 6. Duty category of working platforms; Light / Medium / Heavy / Special 7. Number of lifts above base lift: Six 8. Scaffold height: 12 meters 9. Number of bays long: Ten 10. Scaffold length: 24 meters 11. Type of access: Ladder / Stair / Ramp / Other 12. Design drawing reference: TA / 1234 13. Date of handover: Today’s Date Day/Month/Year 14. Time of handover: Now AM or PM or 24 hour 15. Name of responsible scaffolder: You 16. Signature of responsible scaffolder: Yours