What is ISO 13920?

Specifies general tolerances for linear and angular dimensions and for shape and position of welded structures in four classes, these being based on customary workshop accuracy. The main criterion for the selection of a particular class should be the functional requirements.

Is standard 13920?

International Standard ISO 13920 was prepared by the European Committee for Standardization (CEN) in collaboration with ISO Technical Committee TC 44, Welding and allied processes, Subcommittee SC 10, Unification of requirements in the field of metal welding, in accordance with the Agreement on technical cooperation …

What is the standard tolerances for structural welding?

Weld sizes have an undersize tolerance allowable over about 10% of their length but in general the weld is considered a minimum.

Is code ductile detailing?

Ductile detailing is provided in structures so as to give them adequate toughness and ductility to resist severe earthquake shocks without collapse.

What is sweep and camber?

FAQ. When we are talking about metal bending a camber denotes a curve in the vertical plane (hardway bending) and a sweep denotes a curve in the horizontal plane (easyway bending).

Is 13920 is to be used for all structural elements?

Requirements of the original IS 13920 standard issued in 1993 were mandatory only for all structures in seismic zones IV and V, and for important buildings, industrial structures and buildings taller than 5 storeys in zone III.

What is the meaning of 13920 2016?

IS:13920-2016 is not a Performance based Code. It is a clear Prescriptive Code. (2) Nowhere the Code specifies how to model degradation in strength and stiffness of various elements, hysteresis models, and carryout a nonlinear analysis – static or dynamic.

What is sheet tolerance?

A sheet metal tolerance’s tolerance band refers to its range of allowable dimensions. Engineers and designers take different approaches to tolerance bands. A “looser” tolerance has a larger range between the upper and lower limits. Meanwhile, “tighter” tolerances have shorter tolerance bands.

Why is Cambering done?

How is Cambering Used? The obvious purpose of cambering is, to take straight steel beams and convert them to vertical arcs. Compared to cambering straight structural steel in the shop, producing and transporting structural steel with the necessary curvature simply isn’t in the same realm of efficiency.

What is steel Cambering?

Cambering is the curving of a beam about the strong axis of the member, while, sweep applies to the curving of a member about the weaker axis. Cambering is typically performed by a steel fabricator after the member has been cut to length and punched or drilled.