23.A.15 Floor Removal.
Removing steel on bridge.
- Before demolishing any floor, debris and other material must be removed from the immediate work location and other adjacent floor areas.
- (1) Planks not less than 2-in x 10-in (5-cm x 25.4-cm) in cross section, full sized undressed, must be provided for and must be used by employees to stand on while breaking down floor areas between beams/joists.
- (2) Such planks must be so located as to provide a safe support for personnel should the joists between the beams collapse.
- (3) Straddle space between planks must not exceed 16 in (40.6 cm).
- Safe walkways, not less than 18 in (45.7 cm) wide, formed of wood planks not less than 2 in (5 cm) thick or of equivalent strength, must be provided and used by personnel when necessary to enable them to reach any point without walking upon exposed beams.
- Stringers of ample strength must support the flooring planks. The ends of such stringers must be supported by floor beams or girders.
- Planks must be laid together over solid bearings with the ends overlapping at least 1 ft (0.3 m).
- When floors are being removed, employees must not be allowed in the area directly underneath. The area must be barricaded to prevent access and signed to warn of the hazard.
23.A.16 Steel Removal
.- When a floor, or any portion of a floor, has been removed, planking must be provided for the workers razing/dismantling the steel framing.
- Steel construction must be dismantled column-by-column and tier-by-tier (columns may be in two-story lengths).
- Any structural member being dismembered must not be overstressed.
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23-5. What is the size requirement for planks used by employees to stand on while breaking down floor areas between beams/joists?
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