also: エッチがたこう
noun
H-section steel; H beam; rolled steel joint
Technical term in construction and engineering for a steel beam with an H-shaped cross-section.
このビルの骨組みにはＨ形鋼が使われている。
H-section steel is used in the framework of this building.
I-section steel, which has an I-shaped cross-section, while Ｈ形鋼 has an H-shaped cross-section.
Compound of Ｈ (eichi, the letter H) + 形 (gata, shape) + 鋼 (kō, steel), referring to the H-shaped cross-section of the steel beam.