Screws - The Canadian Wood Council - CWC
2021-7-21 · Design provisions in Canada are limited to 6, 8, 10 and 12 gauge screws and are applicable only for wood screws that meet the requirements of ASME B18.6.1. For wood screw diameters greater than 12 gauge, design should be in accordance with the lag screw requirements of CSA O86. Screws are designed to be much better at resisting withdrawal than nails.
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