Lateral wind loads on walls in ForteWEB Software (USA only). ASCE/SEI 7-10

Determination of design wind pressure used for wall member design.

The ForteWEB Wind Load Calculator determines the design wind pressure for loading wall members normal to the exterior face of enclosed buildings.

Loading standard: The wind pressure value is calculated according to: ASCE/SEI 7-10 Chapter 30 Wind Loads - Components and Cladding (C&C), Part 1: Low-Rise Buildings.

Limitations: Building limitations are described in ASCE/SEI 7-10, Section 30.4 (Low-rise building with certain roof configurations and h ≤ 60 ft.)

The full load is applied laterally to the wall member for strength design and 42% of this load is used for stiffness design (2012 IBC, Sec. 1604 General Requirements, Table 1604.3, footnote f).

 

Three values of the design wind pressure, p are calculated and returned by the Lateral Wind Load Calculator:

1. Net suction (outward pressure) at wall corners: Zone 5 in Figure 30.4-1. Generally the highest magnitude net wind pressure of the three pressures that are calculated.

2. Net suction (outward pressure) at wall center: Zone 4 in Figure 30.4-1. This is the design wind pressure used by the software for individual wall member design.

3. Net pressure (inward): Zones 4 and 5 in Figure 30.4-1. Generally the lowest magnitude net wind pressure of the three pressures that are calculated.