1. LIGHTWEIGHT CONSTRUCTION

2. LIGHTWEIGHT CONSTRUCTION

3. LIGHTWEIGHT CONSTRUCTION
PROGRAM OBJECTIVES:
— Recognize lightweight construction
— Identify the dangers of lightweight
construction
— Describe techniques of ventilating light-
weight construction

4. LIGHTWEIGHT CONSTRUCTION
CONVENTIONAL CONSTRUCTION:
Conventional construction utilizes structural members that depend on size for strength. The greater the span for a structural member the larger it has to be to support a given load.

5. LIGHTWEIGHT CONSTRUCTION

6. LIGHTWEIGHT CONSTRUCTION
DEFINITION:
Lightweight construction does not derive its strength from size. Is obtained from multiple members that are in compression and tension.
Additionally, the strength of the individual structural member is dependent on the sum total of the other members; thus, if one member fails, other members may fail.

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8. LIGHTWEIGHT CONSTRUCTION

9. LIGHTWEIGHT CONSTRUCTION
SIZE-UP
Preplanning - Your district
Onscene -
Walk around structure sizing up old/new
construction methods and,
determine strengths and hazards by
undressing the building in your mind

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12. LIGHTWEIGHT CONSTRUCTION PLAN: Strategy and Tactics
Life Safety
Incident Stabilization
Property Conservation
TACTICS
Search and Rescue
Ventilation
Fire Attack
Forcible Entry
Salvage
etc...

13. LIGHTWEIGHT CONSTRUCTION
IMPLEMENTATION

14. LIGHTWEIGHT CONSTRUCTION INDICATORS
DWELLINGS
Structures constructed in the last 20 years
2x4-inch rafter tails under the eaves
COMMERCIALS
Concrete tilt-up walls
Fascias or “new style” buildings
Flat roofs
Buildings constructed in the last 20 years

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16. LIGHTWEIGHT CONSTRUCTION
STRUCTURAL MEMBERS USED IN LIGHTWEIGHT CONSTRUCTION:
— Lightweight Beams
— Wood Trusses
— Metal Trusses
— Flooring
— Other

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22. LIGHTWEIGHT CONSTRUCTION

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25. LIGHTWEIGHT CONSTRUCTION

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28. LIGHTWEIGHT CONSTRUCTION
KEY POINTS:
Preplan your district, pay special attention to lightweight construction
Size-up the scene, develop a plan, implement the plan, re-evaluate
Communicate onscene types of construction and changes as they occur
Risk vs. Benefit
Great personal risk to save a life
Least personal risk to save property

29. LIGHTWEIGHT CONSTRUCTION
KEY POINTS CONT’D:
Lightweight construction exposed to fire shortens the time to collapse
Hotter fires and quicker response times lead to firefighters being at the scene during times of flashover and collapse
Accountability with no freelancing is crucial. Know the plan, STAY TOGETHER
LIVE TO FIGHT ANOTHER DAY