Ventilation Skill Drills. 14. Objectives (1 of 2). Break glass with a hand tool. Break a window with a ladder. Break windows on upper floors using the Halligan toss. Establish negative-pressure ventilation. Establish positive-pressure ventilation. 14. Objectives (2 of 2).
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Step 1: Position yourself to the side of the window.
Step 2: With back against the wall, swing backward forcefully with the tip of the tool striking the top 1/3 of the glass.
Step 3: Clear remaining glass from the opening with the hand tool.
Step 1: Lower the Halligan tool over the edge of the roof to measure the distance.
Step 2: Toss the Halligan tool over the roofline so that it swings back to break the glass.
Step 1: Hang the fan in the upper part of the opening.
Step 2: Use salvage covers to prevent churning. Provide openings on the windward side for cross ventilation.
Step 1: Place the fan in front of the opening to be used for attack.
Step 2: Provide an exhaust opening at or near the fire.
Step 3: Start fan and allow smoke to clear.
Step 1: Use a hand tool to check the roof before stepping onto it.
Step 2: Use the tool to sound ahead and to both sides as you walk. Locate support members by sound and rebound. Check conditions around your work area periodically.
Step 3: Sound the roof along your exit path.
Step 1: Locate the roof supports by sounding. Make the first cut parallel to the roof support.
Step 2: Make a triangle cut at the first corner.
Step 3: Make two cuts perpendicular to the roof supports (3 and 4). Then make the final cut parallel to another roof support (5).
Step 4: Pull out or push in the triangle cut.
Step 5: Punch out the ceiling below. Be careful for a sudden updraft of hot gases or flames.
Step 1: Locate the roof supports by sounding.
Step 2: Make two parallel cuts perpendicular to the roof supports.
Step 3: Cut parallel to the supports and between pairs of supports in a rectangular pattern.
Step 4: Tilt the panel to a vertical position.
Step 1: Locate the roof supports.
Step 2: The first cut is made from just inside a support member in a diagonal direction toward the next support member.
Step 3: The second cut begins at the same location as the first, and is made in the opposite diagonal direction, forming a “V” shape.
Step 4: The final cut is made along the support member and connects the first two cuts. Cutting from this location allows fire fighters the full support of the member directly below them while performing ventilation.
Step 1. Make two parallel cuts, 2' to 4' apart, across the entire roof, starting at the ridge pole (for peaked roofs) or a bearing wall (for flat roofs). Cut between the two long cuts to make a row of rectangular sections. Remove the rectangular panels to open the trench.