Influence on efficiency
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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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Influence on efficiency

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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


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%


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