就住宅楼梯标准而言，2021 年《国际住宅规范》（IRC）规定了楼梯的最低要求，以确保一定程度的公众安全。该规范考虑了多个要素，例如楼梯宽度、净空高度、立管高度和踏板高度。 首先需要注意的...

Cutting, Notching, and Bored Holes in Floor Joist Notching in floor joists and beams and girders. Notches located at the ends of solid lumber floor joists are permitted, provided t...