Drywall Screw Fastener Takeoff
Drywall screws from the framing spacing and the field pattern: studs per sheet = floor(width x 12 / stud spacing) + 1; screws per stud = floor(length x 12 / field spacing) + 1; total = sheets x studs per sheet x screws per stud. 100 sheets on 16 in framing at a 12 in field pattern is 36 screws a sheet (3,600 screws); a tighter 8 in pattern on a fire-rated or ceiling assembly runs it to 5,200. Counts fasteners only -- the sheets and mud are in the drywall tile.
Formula and source
studs_per_sheet = floor(sheet_width_ft x 12 / stud_spacing_in) + 1; screws_per_stud = floor(sheet_length_ft x 12 / field_screw_spacing_in) + 1; total_screws = sheets x studs_per_sheet x screws_per_stud.
Drywall fastener identity by name (studs a sheet crosses x screws per stud, over the sheet count); first-principles count arithmetic.
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