Roof Sailing Wind and Weather Assessment

Question 1

Which Beaufort wind scale number corresponds to a sustained wind speed of approximately 25–31 mph (fresh breeze)?

Accepted Answer

Force 5

Answer

Force 3

Answer

Force 4

Answer

Force 6

Question 2

What weather condition creates the most significant ice hazard on roofing surfaces in the US?

Accepted Answer

Freezing rain (glaze ice)

Answer

Light snowfall

Answer

Heavy snowfall

Answer

Frost

Question 3

What is the primary danger of working on a roof during thunderstorm conditions?

Accepted Answer

Lightning strike risk — workers are the highest point

Answer

Reduced visibility

Answer

UV radiation exposure

Answer

Dehydration

Question 4

Which type of cloud formation is the most reliable indicator of imminent severe weather requiring work stoppage?

Accepted Answer

Cumulonimbus

Answer

Cirrus

Answer

Cumulus

Answer

Stratus

Question 5

What relative humidity level begins to significantly increase the risk of heat stroke for workers performing heavy physical labor on rooftops?

Accepted Answer

Above 60%

Answer

Above 40%

Answer

Above 80%

Answer

Above 90%

Question 6

What is wind-driven rain's primary structural impact on roofing systems?

Accepted Answer

Forcing water under laps and flashings, causing leaks and structural damage

Answer

Reducing UV degradation

Answer

Cooling hot roofing surfaces

Answer

Improving adhesion of roofing membranes