UFC 4-023-03
25 January 2005
Figure B-7 Lateral Support For Partition Walls
Partition of mass not less than
100 kg/m2 (20.6 lb/ft2) so tied to
be capable of resisting a
Plan
horizontal force of 0.5 Ft, in kN
per meter height
Elevation
B-3.2
Steel Tie Forces.
In Burnett 1975, the review of the British Tie Force requirements was limited
to reinforced concrete. Similar details for steel design were not uncovered in
development of this UFC.
The tie force requirements for steel are often different from reinforced
concrete; this is not surprising given that separate organizations generated the steel
and concrete building standards. For steel tie forces, a "basic strength" as a function of
building height is not used. The loads used to determine the horizontal steel tie forces
are based on factored loads, whereas the upper limit on the basic strength and the
scaling of the concrete tie forces are based on un-factored loads. Also, the vertical tie
forces for steel are based on factored loads whereas un-factored loads are used for
reinforced concrete. For both steel and reinforced concrete, the horizontal ties to
external columns are based on factored loads; however, 3% is used for reinforced
concrete and 1% is used for steel. Finally, the lower limit on the internal steel tie force
of 75 kN (16.9 kips) is slightly different from the lower limit of 60 kN (13.5 kips) for
reinforced concrete.
B-3.3
Masonry Tie Forces.
The tie force requirements for masonry are taken from the British Standards
and are very similar to reinforced concrete, with some small modifications and
B-9
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