Drywall Screw Fastener Takeoff

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 taken off separately.

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.

The fastener count is public first-principles; the field spacing comes from the code and the assembly.

Estimate. AHJ and licensed professional govern.

Field names used by the API: sheets, sheet_length_ft, sheet_width_ft, stud_spacing_in, field_screw_spacing_in, screws_per_sheet, total_screws

• Field spacing ~12 in on walls, 12 in or tighter on ceilings / fire-rated (entered); the assembly governsIBC / GA-216
• Scope fasteners only; sheets and mud are in the drywall tiletakeoff convention