Unit 3: Building Construction Review Flashcards
(41 cards)
Building Codes and construction types establish requirements for?
- Use and occupancy.
- Fire resistance.
- Construction materials.
- Structural loads.
- Fire protection.
DIFFERENT TYPES OF
BUILDING CODES
• International Building Code (IBC). • National Fire Protection Association (NFPA). – Referenced in NFPA 921, Guide for Fire and Explosion Investigations .
• IBC Type IA or IB. •NFPA. – I (422) or I (332). – Numbers are fire resistance in hours. -- Four-hour rated exterior bearing walls. -- Two-hour rated interior bearing walls. -- Two-hour rated column protection.
Fire Resistive
• IBC Type IIA or IIB.
•NFPA.
– II (111) or II (000).
Non Combustive
Type III
Ordinary Construction
Heavy Timber also known as mill construction
Type 4
Wood Frame
Type 5
DANGERS OF ENGINEERED
WOOD I-BEAM FLOORS
• High surface-to-mass ratio.
• Often unprotected by gypsum wallboard.
– Early failure.
• Improper field cuts and penetrations.
Knowledge of \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ can explain fire and collapse behavior, as well as impact investigator’s safety.
Loads
combined weight of construction materials. • Walls, floors, roofs. • Ceilings, stairways. • Built-in partitions. • Permanent equipment
Dead Load
combined weight produced by the use and occupancy of the building. • Movable objects, such as equipment, furniture and people. • Weather, such as snow and rain.
Live Loads
load resulting from kinetic
forces and loads. Combined with influence
of dead and live loads.
Impact Loads
is a network of pipes and valves suspended throughout a building
and ready to deliver water through regularly spaced nozzles (sprinklers) shortly
after a fire starts.
Automatic sprinkler system
The sprinkler system should be connected to an adequate water supply that delivers water through
an
An underground main
The ________________
is the vertical pipe that connects the underground main to feed and cross mains
System Riser
These mains are connected to the
__________________
on which the sprinklers are located.
Branch lines
Typical Automatic Fire Sprinkler System Layout
Water is released from the sprinklers automatically when a sprinkler’s operating element is heated
to or above its temperature rating. Operating elements may be
fusible links
frangible glass bulbs
rods
chemical pellets
In __________ systems for high hazard properties, all sprinklers operate simultaneously, but this is a rare
arrangement.)
Deluge
_______________ are the most commonly installed fire suppression systems.
Automatic sprinkler systems
Sprinkler systems installed
in residential properties are designed specifically to
prevent flashover in the room where the fire
starts, thereby enhancing life safety.
Of the two basic types of automatic sprinkler systems,
________________ are the most common
Wet pipe systems
are used in unheated areas where having water in the piping would
be susceptible to freezing.
Dry pipe systems
Instead of water, the piping contains pressurized air
___________system usually is slightly slower to apply water than a wet pipe system because it takes
more time to purge the air and deliver the water to the sprinklers. This
decreases system efficiency
and makes dry systems less desirable when immediate water application is important.
The Dry
________ describes ferrous
-based materials, and “_______” is used to identify copper or plastic materials.
Pipe- Ferrous based
Tube- copper or plastic
