| Step 1: Determine risk category; see
Table 1.5-1. |
| Step 2: Determine the basic wind
speed, V, for applicable risk
category; see
Figure. 26.5-1. |
Step 3: Determine the wind load
parameters:- •
Wind directionality factor,
Kd; see Section 26.6 and
Table 26.6-1. - •
Exposure Category B, C, or D; see Section
26.7. - •
Topographic factor, Kzt; see Section 26.8 and
Figure 26.8-1. - •
Ground elevation factor,
Ke; Section 26.9 and
Table 26.9-1. - •
Enclosure classification; see Section
26.12. - •
Internal pressure coefficient,
(GCpi); see Section 26.13
and Table 26.13-1.
|
|
| Step 4: Determine velocity pressure
exposure coefficient, Kh; see Table
26.10-1. |
| Step 5: Determine velocity pressure,
qh, Equation
(26.10-1). |
Step 6: Determine external pressure
coefficient, (GCp): - •
Walls; see Figure 30.3-1. - •
Flat roofs, gable roofs, hip roofs; see
Figure 30.3-2. - •
Stepped roofs; see Figure 30.3-3. - •
Multispan gable roofs; see Figure 30.3-4. - •
Monoslope roofs; see Figure 30.3-5. - •
Sawtooth roofs; see Figure 30.3-6. - •
Domed roofs; see Figure 30.3-7. - •
Arched roofs; see Figure 30.3-8. - •
Bottom horizontal surface of elevated
buildings; see Section 30.3.2.1.
|
| Step 7: Calculate wind pressure,
p; Equation (30.3-1). |