3. Determine Slenderness Effects

    ACI 318-19 (Table 6.6.3.1.1(a))

    ACI 318-19 (19.2.2.1.b)

For the column below level 2:

For the column above level 2:

For beams framing into the columns:

Where:

    ACI 318-19 (19.2.2.1.b)

    ACI 318-19 (Table 6.6.3.1.1(a))

    ACI 318-19 (Figure R6.2.5.1)

(Column essentially fixed at base)        ACI 318-19 (Figure R6.2.5.1)

Using Figure R6.2.5.1 from ACI 318-19 à k = 1.693 as shown in the figure below for the exterior columns with one beam framing into them in the directions of analysis.

Figure 2 - Effective Length Factor (k) Calculations for Exterior Columns with One Beam Framing into them in the Direction of Analysis (Sway Frame)

        ACI 318-19 (6.2.5.1a)

Where:

        ACI 318-19 (6.2.5.2)