Scaffolding Luam ntaiv Beams Specification:
Peb siv cov ncuav qab zib los muab cov kev paub zoo dua, txheeb xyuas lub vev xaib, thiab cov ntsiab lus ntiag tug. Los ntawm kev siv lub xaib no, koj pom zoo rau peb siv cov ncuav qab zib.
