อื่น ๆ
เอกสารมาตรฐาน
สหรัฐอเมริกา
AASHTO
M 168-07 (2020)
Wood Products
2007 (2020)
6
HM42-2022 part 1
This specification provides a compilation of specifications covering commercial grades and species of lumber and other wood products for highway construction as indicated below. More detailed requirements will be found in the various specifications cited for specific products: Lumber, Structural glued laminated timber, Piling, Posts, and Structural composite lumber.