Influence on efficiency

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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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Presentation Transcript
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

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

• 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%