What is the main concern with the new beam in the large hotel as shown in Fig. 2-7?

• Structural integrity

• Aesthetic appeal

• Cost efficiency

• Ease of installation

According to the text, what is a misleading aspect of noncombustible buildings?

• They are completely fireproof.

• They require no maintenance.

• They are more expensive.

• They are environmentally friendly.

The vulnerability of high-rise buildings to fire was shown by which historical event?

• The Great Fire of London

• The Triangle Shirtwaist Factory fire

• The 9/11 attacks

• The Grenfell Tower fire

The difference between Class 1 and Class 2 buildings in terms of fire resistance is:

• Class 1 buildings have higher fire resistance than Class 2 buildings.

• Class 2 buildings have higher fire resistance than Class 1 buildings.

• Both have the same level of fire resistance.

• Fire resistance is not a factor in classifying buildings.

What is the fire-resistance rating of ordinary construction buildings?

Class 3: Ordinary construction buildings are constructed using which materials?

• Wood and steel

• Concrete and steel

• Brick and wood

• Brick and concrete

What is the minimum thickness required for heavy planks in Class 4: Heavy timber buildings?

Heavy timber buildings are considered excellent in terms of collapse resistance from fire because:

• they are made of non-combustible materials.

• they have a high thermal mass that slows down heat transfer.

• they are equipped with advanced fire suppression systems.

• they are designed to collapse in a controlled manner.

What are the walls, floors, and roofs of Class 5 structures made of?

A wood-frame building might pose less of a collapse hazard than a noncombustible one because:

• wood is more flexible and can absorb energy better during an earthquake.

• wood is less durable and more prone to decay.

• noncombustible materials are heavier and more rigid.

• wood is more resistant to fire.