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Wind on Walls - Figure 4.1.7.6.B

Figure 4.1.7.6 B (NBC2020)
v0.1
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Project:
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Date:

Climatic Data

Source
Region
Location
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Velocity Pressure
Return Period:
Reference Velocity Pressure
q:
kPa

Factors

Importance factor
Category:
Limit state:
Exposure Factor
Terrain:
Exterior reference height, h:
m (meters above grade for Ce)
Interior reference height, hi:
m (meters above grade for Cei)
Topographic Factor
Ct:
Internal pressure
Category, Cpi:
info
Building Openings: [CL: 4.1.7.1]
Category 1: Uniformly distributed small openings amounting to less than 0.1% of the total surface area of the building.

Category 2: Non-uniformly distributed openings of which none is significant or significant openings that are wind-resistant and closed during storms.

Category 3: Large openings likely to remain open during storms.

For cladding on parapets use Category 3.

Wall / Building Geometry

Wall
Area of surface, A:
m2
End-zone width, z
(If H or the least horizontal dimension are left blank, z will not be calculated.)
Building Height, H:
m (Height of building at eave)
Least horizontal dimension:
m
wind walls
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This information must be read or used in conjunction with Part 4 of the NBC 2020. In the event of discrepancies, Part 4 of the NBC 2020 shall govern.

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