UFC 4-023-03
25 January 2005
Table 8-3 Deformation Limits for Cold-Formed Steel
AP for Medium and
AP for Low LOP
High LOP
Rotation,
Rotation,
Component
Degrees
Degrees
()
()
(θ)
(θ)
Girts and Purlins
5
5
2
2
Metal Studs
With studs connected
3
2
1.8
1.3
top and bottom
With sliding connection
1
-
0.9
-
Corrugated Metal Deck
6
4
3
2
Standing Seam Metal Deck
6
4
3
2
8-4
ADDITIONAL DUCTILITY REQUIREMENTS.
For MLOP and HLOP structures, design all perimeter ground floor columns
and load-bearing walls such that the lateral uniform load which defines the shear
capacity is greater than the load associated with the flexural capacity, including
compression membrane effects where appropriate. Methods for calculating the
compression membrane effects can be found in Reinforced Concrete Slabs and UFC 3-
340-01.
8-8
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