cp presentation_load charts_sthephen holmes

Presenter: STEPHEN HOLMES

Topic:

PRESENTER

Stephen Holmes

Load Chart Application - The Impact of SLOPE -

And a few other odds & sods

Presenter: STEPHEN HOLMES

OH&S RegulationsAustralian StandardsOperators Manuals

Documents Referred To

Presenter: STEPHEN HOLMES

High

Risk

Pla

nt

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Accidents Happen for a Reason

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OVER-LOADING?

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BACKWARD TIPPING

Presenter: STEPHEN HOLMES

Presenter: STEPHEN HOLMES

Accidents Happen for a Reason

Presenter: STEPHEN HOLMES

Presenter: STEPHEN HOLMES

Slewing Mobile CranesMUST BE SET UP LEVEL

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GROUND SLOPE & CONDITION

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STABILITY ISSUES

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ABREVIATIONS, TERMINOLOGIES & COMPONENTS

Stabilizers

As fitted toVehicle Loading Cranes(Truck wheels toremain on the ground)

Presenter: STEPHEN HOLMES

ABREVIATIONS, TERMINOLOGIES & COMPONENTS

Outriggers

As fitted toSlewing MobileCranes(Truck wheels tobe OFF theground)

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Counterweight

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CraneTerms

Boom Length

Boom Angle

Working Radius

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CraneTermsNon Slewing Crane

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CraneTerms

Non Slewing CraneArticulation Joint

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Types ofNON SLEWING MOBILE CRANES

Tractor CraneArticulatedPick & Carry

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Working Zones

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• All cranes MUST have a load chart• It MUST be in English• It MUST be legible• It MUST be in a position where you can read it

• Charts are calculated under IDEAL conditions• Crane set up correctly to manufacturers spec’s• Good weather conditions• Firm, level, supporting ground

LOAD CHARTS

Presenter: STEPHEN HOLMES

Load Chart Slewing Mobile CraneSelect the BOOM you are working on

Select the RADIUSYou are working at

11 200

Read the RATED CAPACITY at this position

Boom Angle

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DEDUCTIONS TO MAKE

MAIN Hook

FLY Jib

AUX Hook

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DEDUCTIONS TO MAKEMAIN Hook………….……460 kgs

FLY Jib………………….1,200 kgs

AUX Hook ………………. 100 kgs

TOTAL Deductions...…1,760 kgs

Presenter: STEPHEN HOLMES

DEDUCTIONS TO MAKERATING of CRANE……..11,200 kgs

LESS Deductions………..1,760 kgs

LOAD allowable on Main….9,440 kgs

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STRUCTURAL & STABILITY Ratings

ABOVE line STRENGTH

BELOW line STABILITY

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Are all Equal BoomLengths Equal?

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This chart has5 different SWL readings for a 33.9m boom!

Presenter: STEPHEN HOLMES

Presenter: STEPHEN HOLMES

12 tm 12 tm

CRANE STABILITY

4 metres 4 metres

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12 tm 12 tm

CRANE STABILITY

100% oftipping

4m 8m

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Australian Stds requireslewing mobile cranes

load chartsto be calculated at

75% of tipping

CRANE STABILITY

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12 tm 12 tm

CRANE STABILITY

100% oftipping

4m 8m

1.125 tonne would be maximum allowableload to be marked on the load chart - Which is 75% of 1.5 tonne

Presenter: STEPHEN HOLMES

CRANE STABILITYPercentage of TIPPING

Aus.Std. requirements for all cranes

1. Vehicle Loading Cranes – 80%

2. Slewing Mobile Cranes – 75%

3. Pick & Carry (non slewing) – 66.6%

Presenter: STEPHEN HOLMES

CRANE STABILITY20 tonne

4m20t x 4m = 80tm

6 tonne10m

6t x 10m = 60tm

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CRANE STABILITY20 tonne

3m20t x 3m = 60tm

6 tonne11m

6t x 11m = 66tm

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NON SLEWING CRANES

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Load Chart Franna

Slewed less than 10°Slewed more than 10°

Boom Length

Boom Angle

Radius in Metres

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42 mt

66% of Tipping

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34.4 mt80% of Tipping

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BUTSLEW ANGLE

Is not the ONLY thingThat will affect theSWL of the CRANE

THESLOPE OF THE GROUND

CAN HAVE AMAJOR IMPACT

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Presenter: STEPHEN HOLMES

Load Chart Franna Boom Length

Boom Angle

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12m boom40° boom angle

2850kg SWL

1710kg SWL

Presenter: STEPHEN HOLMES

Presenter: STEPHEN HOLMES

Presenter: STEPHEN HOLMES