2 lumber (left) and scaffold-grade lumber (right) may look similar at first glance, scaffold lumber meets a number of particularly high standards, which most construction-grade lumber does not meet. Table 1 compares the allowable spans for nominal and solid sawn wood planks. In addition, construction lumber is also cut to nominal sizes, so a 2x10 isn’t literally 2 in by 10 in. Construction lumber is not intended to withstand the forces likely to occur in a scaffold assembly. For instance, construction lumber only has two-thirds the capacity of scaffold-grade lumber. Lumber designated as scaffold-grade meets a number of particularly high standards, which most construction-grade lumber does not meet. The standard defines a scaffold as, “any temporary elevated platform (supported or suspended) and its supporting structure (including points of anchorage), used for supporting employees or materials or both.” Subpart L is OSHA’s standard for scaffolding, which is available at. Only scaffold-grade lumber should be used for erecting scaffolds. No, 2x10s and other lumber commonly used for trusses are not sufficient for scaffolding applications. Questionįor scaffolding, can 2x10s be used in lieu of scaffold-grade planks? Answer Training workers how to properly construct scaffolds (and use the correct material) is the key to avoiding these kinds of accidents. The number one cause of scaffold accidents is the planking giving way. Scaffolding is common on the jobsite, but it’s especially on peoples’ minds with OSHA’s new fall protection regulations. A safe scaffold starts with the correct material.
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