Framing & StructuralQuestion 333 of 700
A glued-laminated (glulam) beam is stamped 'TOP' along one edge. Why must it be installed with that face up?
a.To show the brand logo
b.Only for appearance
c.So workers can read the grade stamp later
d.Because the beam is manufactured with camber and higher-grade laminations to be on the correct side for the load
Explanation
Glulams are built with a slight upward camber and with stronger tension laminations placed for the intended loading, so installing the 'TOP' edge up puts the camber and lamination layout in the correct orientation to resist load and deflection. Logo visibility, appearance, and reading the stamp are not the structural reason.
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