The story
Because it is H-shaped in cross section.
Etymology from Wiktionary, CC BY-SA 4.0.
H-beam
Today it means: Wide-flange I-beam; (loosely) any I-beam. Full definition →
Today it means: Wide-flange I-beam; (loosely) any I-beam. Full definition →
Because it is H-shaped in cross section.
Etymology from Wiktionary, CC BY-SA 4.0.