Epesè entènèt (seksyon vètikal konekte brides) varye selon wotè, sòti nan 3.0 mm (UPE 50/UPN 50) rive 14.0 mm (UPE 400/UPN 400):
Seri UPE: Web epesè 3.0–14.0 mm (egzanp, UPE 100: 5.0 mm, UPE 300: 10.0 mm).
Seri UPN: Web epesè 3.0–14.0 mm (egzanp, UPN 100: 5.5 mm, UPN 300: 10.5 mm) (yon ti kras pi epè pase UPE pou wotè ekivalan).
The web resists shear forces (e.g., wind, seismic loads)-thicker webs handle higher shear, making UPN 400 or UPE 400 suitable for heavy-industrial applications (e.g., crane supports). EN 10279 specifies web thickness tolerances: ±0.4 mm for ≤5 mm, ±0.5 mm for 5.1–10 mm, and ±0.6 mm for >10 mm. Tolerans sa yo asire pèfòmans taye ki konsistan atravè lo.