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Influence on efficiency

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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  1. 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

  2. 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%

  3. 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%

  4. 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%

  5. 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)

  6. 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%

  7. 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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