IS 5052 defines permissible tolerances for erection of steel structures. Column plumb (H/500), beam level (L/1000), and connection fit-up tolerances are the most commonly referenced. Critical for acceptance of steel erection work on site.
Tolerances for erection of steel structures including alignment, level, plumb, and connection fit-up for buildings, bridges, and industrial structures.
Key Values
Column plumbH/500 or 10mm max
Beam levelL/1000 or 5mm max
Anchor bolt position±5mm
Practical Notes
! Column plumb tolerance is per STOREY not total height — cumulative maximum is 25mm.
! Survey steel structure within 48 hours of erection — thermal expansion affects readings.
! Foundation bolt position tolerance (±5mm) is very tight — check BEFORE concrete pour.
! IS 800:2007 references IS 5052 for all erection tolerance requirements.