Angle and tee limitations (BS 5950)
In the current version when designing tees, single, and double angles to BS 5950, the following checks remain beyond scope:
|Combined buckling||ok||ok||Beyond scope|
In addition, the following limitations apply:
- All sections are assumed to be effectively loaded through the shear centre such that no additional torsion moments are developed. In addition no direct allowance is made for 'destabilizing loads'.
- Design excludes bending of the outstand leg of double angles loaded eccentrically e.g. supporting masonry.
- Conditions of restraint can be defined as top and bottom flange for lateral torsional buckling. It is upon these that the buckling checks are based. For the current release intermediate LTB restraints are omitted (i.e. only fully restrained for LTB, or unrestrained).
- Double angles and tee sections subject to moment with high shear are beyond scope.