I section, I-section, I-shape
section having cross-sectional shape resembling the letter I where the flanges are nor wider than 0,66 of the nominal height of the section and less than 300 mm (see: sections; compare: I-beam), I-tähte meenutava ristlõikega profiilmetall, mille vööde laius ei ületa 0,66 ristlõike nimikõrgusest ega 300 mm (vt profiilmetall; vrd I-tala).