ألواح سقالة LVL

OSHA doesn’t mandate one specific “plank type,” but it does require the منصة and its components (including planks) to be safe for the intended load and setup. Key planking-related requirements include:

• Capacity (4:1 safety factor): scaffold components must support their own weight + at least 4× the maximum intended load.

• Deflection limit: المنصات must not deflect more than 1/60 of the span when loaded.

• Selection/identification guidance: OSHA’s Appendix A (non-mandatory) provides span tables and notes solid-sawn planks should be selected per recognized lumber grading rules and identified by grade stamp.

A scaffold plank’s job is to create a safe, continuous working platform—supporting workers, tools, and materials at height—while maintaining required capacity and limiting deflection under load (so the deck stays stable).

Globally, “best” is less about species and more about rated performance + grading/traceability. In the U.S., OSHA emphasizes selecting planks using recognized grading rules (Appendix A guidance).
Practically:

• North America: scaffold planks are commonly graded softwoods (e.g., Southern Yellow Pine is widely used), but the key is the grade/rating and span table, not just the species.

• EU/UK: timber scaffold boards are commonly to local standards (e.g., UK BS 2482 for timber boards), again emphasizing defined dimensions and grading.

It depends on the market/standard you’re working under:

• UK BS 2482:2009 (timber scaffold boards): specifies 225 mm width و 38 mm or 63 mm thickness.

• OSHA (U.S.): OSHA focuses on capacity/deflection and provides span guidance in Appendix A (e.g., tables for nominal 2×10 solid-sawn planks), rather than a single mandatory “thickness.”

Do not use planks that are defective, damaged, or weakened such that they create a hazard. OSHA requires damaged/weakened scaffold components be repaired/replaced (with competent person oversight), and OSHA has clarified that a defect like a split isn’t automatically disqualifying if it does not create a hazard and the plank still meets the load requirements.
Practical “pull from service” triggers usually include: severe splits, rot/soft spots, delamination (engineered planks), crushed ends, deep gouges, or damage that affects bearing areas/support contact.

You generally shouldn’t “DIY waterproof” a plank in a way that changes its rating or makes it slippery—follow the manufacturer and your local compliance practice. Practical, widely used measures are:

• Storage & handling: keep boards off the ground, dry, and out of standing water; good storage is often the biggest factor in service life.

• End sealing/protection: use end bands/caps and ensure ends are sealed (ends are where moisture damage often starts).

• Factory coatings (preferred): if you need water resistance, specify boards/planks supplied with approved coating/edge sealing and documented performance—avoid site-applied coatings that reduce slip resistance.