ARCH373 Design and Engineering of Environmental
Systems Exam 2 Study Guide 2024-2025 Verified
Question and Answer A+ Graded
Four goals of fire protection systems - ANS- Protection of life
Protection of building
Protection of contents
Continuity of operation
What event started the development of the NFPA 101 - ANS- The Triangle Shirtwaist Factory fire in
1911
fire trapped women and girls behind doors locked by management to prevent stealing. Many
jumped out windows to escape and 148 people died
What is the difference between thermal and non-thermal products from a fire? - ANS- Thermal=
flame and heat
Non-thermal= smoke and constituent gases
Thermal products are visible and make tactile impressions
Non-thermal pose the greatest threat to human life
What is the fire triangle/tetrahedron - ANS- fuel, oxygen, heat energy, an uninhibited chain reaction
the components it takes to produce a fire. If you take any one of these away, you cannot make a fire
What is compartmentation - ANS- method of fire control
passive system
Each "compartment" of a building is enclosed by fire-rated walls, floors, doors, etc.
one-hour separation is required between occupancies
for a mix of occupancies within the same structure
, What are smoke barriers? - ANS- method of smoke control
passive system
useful in a fire's early stages
confines the initial layer of heated air and smoke produced by a fire
helps slow the spread of smoke while making the early detection and suppression of the fire more
likely
What are dilution systems? - ANS- method of smoke control
active system
during the early stage of fire, dilution of smoke with 100% outdoor air (via HVAC system) may
facilitate evacuation
Beyond sort-term, dilution is rarely sufficient for smoke control
What are exhaust systems? - ANS- method of smoke control
active system
single-purpose smoke exhaust system
they employ both air velocity and air pressure to help control smoke movement
As with dilution systems, high velocities are avoided so that fresh are is not drawn up through the
smoke layer
Such systems are particularly useful in large-volume atrium spaces
requirements for exits and egress systems - ANS- need exit passageways in every building from every
space
more than 50 occupants= 2 or more exits
stairs never less than 44 inches wide
all doors swing in direction of egress
panic hardware often required
Different fire classes - ANS- Class A: can be extinguished with water
Class B: burning gases and liquids can float on water, so it is less effective
Class C: Extinguishing medium must be electrically non-conductive
Class D: combustible metals requires special extinguishers
Systems Exam 2 Study Guide 2024-2025 Verified
Question and Answer A+ Graded
Four goals of fire protection systems - ANS- Protection of life
Protection of building
Protection of contents
Continuity of operation
What event started the development of the NFPA 101 - ANS- The Triangle Shirtwaist Factory fire in
1911
fire trapped women and girls behind doors locked by management to prevent stealing. Many
jumped out windows to escape and 148 people died
What is the difference between thermal and non-thermal products from a fire? - ANS- Thermal=
flame and heat
Non-thermal= smoke and constituent gases
Thermal products are visible and make tactile impressions
Non-thermal pose the greatest threat to human life
What is the fire triangle/tetrahedron - ANS- fuel, oxygen, heat energy, an uninhibited chain reaction
the components it takes to produce a fire. If you take any one of these away, you cannot make a fire
What is compartmentation - ANS- method of fire control
passive system
Each "compartment" of a building is enclosed by fire-rated walls, floors, doors, etc.
one-hour separation is required between occupancies
for a mix of occupancies within the same structure
, What are smoke barriers? - ANS- method of smoke control
passive system
useful in a fire's early stages
confines the initial layer of heated air and smoke produced by a fire
helps slow the spread of smoke while making the early detection and suppression of the fire more
likely
What are dilution systems? - ANS- method of smoke control
active system
during the early stage of fire, dilution of smoke with 100% outdoor air (via HVAC system) may
facilitate evacuation
Beyond sort-term, dilution is rarely sufficient for smoke control
What are exhaust systems? - ANS- method of smoke control
active system
single-purpose smoke exhaust system
they employ both air velocity and air pressure to help control smoke movement
As with dilution systems, high velocities are avoided so that fresh are is not drawn up through the
smoke layer
Such systems are particularly useful in large-volume atrium spaces
requirements for exits and egress systems - ANS- need exit passageways in every building from every
space
more than 50 occupants= 2 or more exits
stairs never less than 44 inches wide
all doors swing in direction of egress
panic hardware often required
Different fire classes - ANS- Class A: can be extinguished with water
Class B: burning gases and liquids can float on water, so it is less effective
Class C: Extinguishing medium must be electrically non-conductive
Class D: combustible metals requires special extinguishers
