Page 285 - Design of Reinforced Masonry Structures

h′ ft
Effective h′ = 2h
Assumed buckled shape of columns, walls, and pilasters is shown by dashed lines.
Height to roof or floor
h′ ft between supports
Brace
Wall thickness
Thickness
Effective h′
Column
Fixed top and bottom Fixed top and bottom Fixed at base, free at top K = 2.0 K = 0.6 K = 0.6 K = 2.10 K = 0.65 ∗ AISC recommended values of K [5.9] Effective height of a column, wall, or a pilaster for practical end conditions. (Adapted from Ref. [5.6].)
h′ ft
0.2 h′
Effective h = 0.6 h′ 0.2 h′
Fixed at base, pinned at top K = 0.8 K = 0.8
h′ ft
0.2 h
Effective h = 0.8 h′

h′
Effective h = h′
Pinned at supports K = 1.0 K ∗ = 1.0
FIGURE 5.6

5.6