De acordo com a Tabela R602.3 (1) do código residencial internacional (IRC), você tem que usar dois fixadores 16d (3 1/2 "x 0.135") para prender a placa superior ou única a um pino. Se os pinos fossem pregados na placa única, seriam necessários três fixadores 8d (2 1/2 "x 0.133") ou dois fixadores 16d (3 1/2 "x 0.135").
International Residential Code 2012
Chapter 6 Wall Construction
Section R602 Wood Wall Framing
R602.3 Design and construction. Exterior walls of wood-frame construction shall be designed and constructed in accordance with the provisions of this chapter and Figures R602.3(1) and R602.3(2) or in accordance with AF&PA’s NDS. Components of exterior walls shall be fastened in accordance with Tables R602.3(1) through R602.3(4)...
Se por algum acaso esses parafusos forem equivalentes a pregos de 16d, eles devem ser aceitáveis. No entanto, duvido que eles sejam equivalentes e, portanto, não devem ser usados.
Não há programação de fixadores específica para paredes internas que não possuam estrutura, enquanto as paredes estruturais portáteis precisam ser enquadradas da mesma forma que as paredes externas.
R602.4 Interior load-bearing walls. Interior load-bearing walls shall be constructed, framed and fireblocked as specified for exterior walls.
R602.5 Interior nonbearing walls. Interior nonbearing walls shall be permitted to be constructed with 2 inch by 3 inch (51 mm by 76 mm) studs spaced 24 inches (610 mm) on center or, when not part of a braced wall line, 2 inch by 4 inch (51 mm by 102 mm) flat studs spaced at 16 inches (406 mm) on center. Interior nonbearing walls shall be capped with at least a single top plate. Interior nonbearing walls shall be fireblocked in accordance with Section R602.8.