S24 CT Wind Classfication

How do wind loads typically act on buildings?

• Only laterally on walls

• Only up and down on roofs

• Both laterally on walls and up and down on roofs

• Only diagonally on walls

What is the result of wind blowing against a building?

• Negative pressure which pulls at the building

• Positive pressure which pushes against the building

• No pressure change

• Both positive and negative pressure

What does a vortex (whirl) result in?

• Positive pressure which pushes against the building

• No pressure change

• Negative pressure which pulls at the building

• Both positive and negative pressure

What type of building will be affected by the wind load more than masonry, timbers, and slate tiles?

• Heavyweight building

• Lightweight building

• Reinforced concrete building

• Steel-framed building

What can wind produce when it flows around a building?

• Low pressure at the base

• High suction pressures mainly at the leading edges

• Increased temperature inside the building

• Reduced air circulation

What is necessary to prevent a building from being blown away by wind?

• Painting the building

• Bracing the structure and anchoring it to the ground

• Using lightweight materials

• Increasing the height of the building

What is necessary for maintaining the stability of a building against wind loads?

• Careful placement of bracing or other means

• Using glass windows

• Increasing the number of doors

• Reducing the height of the building

What type of wind pressure will a roof surface experience if it has a slope greater than 30 degrees and faces into the wind?

• Positive wind pressure

• Negative wind pressure

• No wind pressure

• Equal wind pressure

What is the effect of a flatter roof on the suction forces exerted on it?

• Higher suction forces

• Lower suction forces

• No suction forces

• Equal suction forces

What is important to tie the roof materials to?

• Supporting battens or rafters

• The ground

• The walls

• The ceiling