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

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Lightweight construction2
LIGHTWEIGHT CONSTRUCTION

  • PROGRAM OBJECTIVES:

    — Recognize lightweight construction

    — Identify the dangers of lightweight

    construction

    — Describe techniques of ventilating light-

    weight construction


Lightweight construction3
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.



Lightweight construction5
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.




Lightweight construction8
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




Lightweight construction plan strategy and tactics

STRATEGY:

Life Safety

Incident Stabilization

Property Conservation

TACTICS

Search and Rescue

Ventilation

Fire Attack

Forcible Entry

Salvage

etc...

LIGHTWEIGHT CONSTRUCTIONPLAN: Strategy and Tactics


Lightweight construction11
LIGHTWEIGHT CONSTRUCTION

  • IMPLEMENTATION


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

LIGHTWEIGHT CONSTRUCTIONINDICATORS



Lightweight construction13
LIGHTWEIGHT CONSTRUCTION

  • STRUCTURAL MEMBERS USED IN LIGHTWEIGHT CONSTRUCTION:

    — Lightweight Beams

    — Wood Trusses

    — Metal Trusses

    — Flooring

    — Other













Lightweight construction25
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


Lightweight construction26
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


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