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# Influence on efficiency - PowerPoint PPT Presentation

Influence on efficiency. Questions Ideal weather The work with most influences of weather How much of the total work The influences in percent to the efficiency Rain: when it start to raining Cold: when the temperature goes under zero Warm: when the temperature is getting wormer

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## PowerPoint Slideshow about 'Influence on efficiency' - bruce-mendoza

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Presentation Transcript

Questions

Ideal weather

The work with most influences of weather

How much of the total work

The influences in percent to the efficiency

Rain: when it start to raining

Cold: when the temperature goes under zero

Warm: when the temperature is getting wormer

Snow: when start to snow

Wind: start to blow

Wind and rain: when both blowing and raining

Wind and snow: when both blowing and snowing

Wind and cold: when both blowing and cold

Sheet metal workers80 persons at a conference (from whole Sweden)

• Ideal weather: 15o, no wind

• Worst work: sheet metal work on roofs

• 20% of the total work

• Rain: 30-100% (Impossible to walk on the roof)

• Cold: 30-100% (Some material need at least 5o)

• Warm: no big problem (?)

• Snow: 50-100% (Like rain + take away snow)

• Wind: 50-100% (Sheets blow away - some work e.g. window on backside no influence)

• Wind and snow, wind and rain, wind and cold: 100%

Electricians2 persons 60 and 30 years old

• Ideal weather: 15o, no wind

• Worst work: put cables together outdoors, construction

• 5% of the total work

• Rain: 15%

• Cold: 15% (Some cables need at least 0o - gets hard)

• Warm: no big problem

• Snow: 25% (Like rain + take away snow)

• Wind: 15%

• Wind and rain: 25%

• Wind and snow: 25%

• Wind and cold: 15%

Electrician1 persons 35 years old

• Ideal weather: 15o, no wind

• Worst work: put cables together outdoors, streets

• >50% of the total work

• Rain: 0%

• Cold: >25% (Cables needs at least 0o -gets hard – can not be handled)

• Warm: no big problem

• Snow: 0%

• Wind: 15%

Bridge work4persons about 55 years old

• Ideal weather: 10-15o, no wind

• Worst work: formwork, moulding

• 80% of the total work

• Rain: 15%

• Cold: 100% (Moulding below 5o not possible)

• Warm: no big problem

• Snow: 50% (Have to erase snow from formwork)

• Wind: 0-20% (At strong wind can it be impossible to lift the formwork)

• Wind and rain: 15-50%

• Wind and snow: 50-100%

• Wind and cold: 100% (Moulding not possible)

Woodworkers and their supervisors4 woodworkers 29-45, 2 supervisors 55-60

• Ideal weather: 10-15o, no wind, no sun

• Worst work: nailing the wood parts of the roof construction

• 5-10% of the total work

• Rain: 100% (Not possible to lay wood roof, do other work and loos 10-15%)

• Cold: 0% (Down to -10o no influence)

• Warm: <20o no influence, >25 10-25% influence)

• Dry snow: 20% (I easy to take away)

• Wet snow: 100% (Have to clean the roof from snow)

• Wind: 0-20% (Takes it easy, can not lay paper)

• Wind and rain: 100% (Do other jobs if possible)

• Wind and snow: 100%

• Wind and cold: 100% (-5o feels like -25o)

To move to an other work leads to decrease of efficiency of between 10-15%

Woodworkers 2 persons

• Ideal weather: 10-15o, no wind, no sun

• Worst work: erecting roof beams

• 5-10% of the total work

• Rain: 5% (Depends to the level of raining)

• Cold: 0% (Down to -15o no influence, lower 5%)

• Warm: <25o no influence, >25 5% influence)

• Dry snow: 5% (I easy to take away)

• Wet snow: 20-25%

• Wind: 100% (>10 m/s not possible to lift roof beams, great risks)

• Wind and rain: 100% (See wind but worse)

• Wind and snow: 100% (See wind but worse)

• Wind and cold: 100%(See wind but worse)

To move to an other work leads to decrease of efficiency of between 10-15%