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For calculator corrections, assumption notes, or site feedback, contact the operator at hello@yardmaterialtools.com.

Please include the calculator URL, the inputs you used, the result you expected, and any supplier label or local material information that explains the correction. Do not send private account credentials, payment details, or sensitive project documents.

Yard Material Tools does not provide emergency advice, structural engineering, construction supervision, or local code interpretation. For structural or safety questions, contact a qualified local professional.