BS 4-1 Hot-rolled structural sections (UB, UC, joists, PFC)

Is BS 4-1 still current?

Yes. BS 4-1:2005 is the latest edition MechAtlas found (MechAtlas review: 27 October 2026). Check the publisher for amendments before you specify it.

What it covers

Dimensions and mass of UK universal beams, columns, bearing piles, joists, tees and parallel flange channels.

Parts that use BS 4-1

• I-beam (taper flange) (UK (BS), main)
  Hot-rolled I-shaped beam with sloping (taper) inner flange faces, used for general frames, supports and runway beams.
  Joists (taper flange) plus UB/UC/PFC.
• Wide-flange / parallel flange H-beam (UK (BS), main)
  Hot-rolled I or H section with parallel flange faces, used for columns, main beams, crane girders and pipe racks.
  Universal beams (UB) and columns (UC).
• Channel (C / U section) (UK (BS), main)
  Hot-rolled U-shaped section used for frames, purlins, bracing, conveyor stringers and platforms.
  Parallel flange channels (PFC).

Official source

MechAtlas does not reproduce standards. Check the official edition at the publisher's page for BS 4-1 or the BS store.

Other steel grades & sections standards

• EN 10277 Replaced
  Bright steel products
• IS 2062 Replaced
  Hot-rolled structural steel
• DIN 1025-2 Withdrawn
  Wide flange I-beams (IPB / HEB series)
• IS 12778 Withdrawn
  Parallel flange beams, columns and bearing piles
• EN 10210-1 / 10219-1 Changing
  Hot-finished / cold-formed hollow sections
• ASTM A105/A105M Current
  Carbon steel piping forgings
• ASTM A108 Current
  Cold-finished carbon and alloy steel bars
• ASTM A1085 Current
  Cold-formed welded carbon steel HSS
• ASTM A240/A240M Current
  Stainless plate, sheet & strip
• ASTM A29 Current
  General requirements for hot-wrought steel bars
• ASTM A36/A36M Current
  Carbon structural steel
• ASTM A572 / A992 / A500 / A514 Current
  HSLA, W-shapes, HSS, Q&T plate

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