Tables 26(a) to (d) indicate the classification of different details into various categories for the purpose of assessing fatigue strength. Details not classified in the table may be treated as the lowest detail category of a similar detail, unless superior fatigue strength is proved by testing and/or analysis.
Holes in members and connections subjected to fatigue loading shall not be made,
a) using punching in plates having thickness greater than 12 mm unless he holes are sub-punched and subsequently reamed to remove the affected material around the punched hole; and
b) using gas cutting unless the holes are reamed to remove the material in the heat affected zone.
PART 6 STRUCTURAL DESIGN — SECTION 6 STEEL