跨度表
木材使用庫
資源設計價值
指定南方松木材
行業連結
木材分級
Span Tables
Joists & Rafters
Headers and Beams
Headers and Beams : Size Selection Tables
Headers and Beams : Allowable Load Tables
Specifying Southern Pine Lumber
Specification Guidelines
Sizing
Seasoning Requirements
Lumber Grading
Descriptions
Methods
Grade and Quality Marks