fire quiz 5

A freestanding wall that extends above the roofline is a __________ wall.

• sleeper

• parapet

• pony

• curtain

According to recent UL and NIST fire research, which is a likely outcome of improperly performed ventilation at a ventilation-controlled fire?

• Stratification of smoke

• Reduced visibility

• Vent-point ignition

• Rapid fire growth

According to tests conducted by UL, in order for ventilation to improve interior conditions, what must occur?

• Ventilation must not significantly alter the flow path.

• The vent must be in the same compartment as the fire.

• The vent must be created as soon as possible.

• Ventilation must be coordinated with the application of water as close to the fire as possible.

All forms of ventilation that use fans or other powered equipment are classified as __________ ventilation.

• assisted

• positive-pressure

• hydraulic

• mechanical

For natural ventilation, which window should be opened first?

• Windows opening directly into the fire room

• The downwind window

• The highest window

• The upwind window

How can recirculation be eliminated during smoke ejection?

• Raise the fan in the opening.

• Increase the number or size of exhaust openings.

• Pull the fan back from the opening a few inches.

• Completely block the opening around the fan.

In which case does a larger vertical ventilation opening improve interior conditions better than a smaller opening?

• For any ventilation-limited fire

• In all cases

• For any fire within an intact compartment

• When combined with coordinated water application

In which construction type are there direct vertical channels in the exterior walls?

• Heavy timber

• Unreinforced masonry

• Lightweight truss

• Balloon frame

Positive-pressure ventilation is the least suitable approach for which situation?

• High-rise fire

• Fire in structural void spaces

• Structure with large interior spaces

• Fire attack is in progress

Recirculation is associated with which form of ventilation?

• Vertical

• Horizontal

• Negative-pressure

• Positive-pressure