Le générateur de charge SkyCiv utilise les valeurs numérisées des chiffres suivants pour calculer le \( C_{p} C_{g} \) dans le calcul des pressions de vent de conception pour les composants structurels et le revêtement:
Figure 4.1.7.6.-B – External peak values of \( C_{p} C_{g} \) on individual walls for the design of cladding and secondary structural members;
Figure 4.1.7.6.-C – External peak values of \( C_{p} C_{g} \) on roofs with a slope of 7° or less for the design of structural components and cladding;
Figure 4.1.7.6.-E – External peak values of \( C_{p} C_{g} \) on single-span gabled and hipped roofs with a slope greater than 7° for the design of structural components and cladding; et
Figure 4.1.7.6.-G – External peak values of \( C_{p} C_{g} \) on monoslope roofs for the design of structural components and cladding.
The process is done by usingEngauge Digitizer, as the exact values in the graphs are not explicitly shown or stated in the code reference. With this, for transparency, the following data are being used in the Load Generator – Calculs de charge de vent à l'aide du NBCC 2015 et 2020. The adopted values are rounded to the nearest tenths (higher magnitude). Values in between known points are interpolated linearly using log-scale for the area axis.
Figure 4.1.7.6.-B – \( C_{p} C_{g} \) on individual walls for the design of cladding and secondary structural members
Zone
l'aire, m2.
\( C_{p}C_{g}\)
\(e^{-}\)
≤ 1
-2.1
≥ 50
-1.5
\(w^{-}\)
≤ 1
-1.8
≥ 50
-1.5
\(e^{+}\) et \(w^{+}\)
≤ 1
1.8
≥ 50
1.3
Figure 4.1.7.6.-C – \( C_{p} C_{g} \) on roofs with a slope of 7° or less for the design of structural components and cladding
Zone
l'aire, m2.
\( C_{p} C_{g} \)
\(s^{-}\)
≤ 7.128
-2.5
≥ 10
-2.0
\(r ^{-}\)
≤ 1
-1.8
≥ 10
-1.5
\(c^{-}\)
≤ 1
-5.4
≥ 10
-2.0
\(oc^{-}\)
≤ 1
-5.4
≥ 10
-1.5
\(os^{-}\)
≤ 1
-3.2
10
-3.0
≥ 50
-2.0
\(or^{-}\)
≤ 1
-3.2
10
-3.0
≥ 50
-2.0
\(s^{+}\), \(r ^{+}\), et \(c^{+}\)
≤ 1
0.5
≥ 10
0.33
Figure 4.1.7.6.-E – \( C_{p} C_{g} \) on roofs with a slope of \( 7° \lt \alpha \leq 27° \)
Zone
l'aire, m2.
\( C_{p} C_{g} \)
\(s^{-}\)
≤ 2.2
-3.6
≥ 10
-2.6
\(r ^{-}\)
≤ 0.9
-2.5
≥ 8.9
-2.05
\(c^{-}\)
≤ 1.1
-5.0
≥ 10.8
-4.0
\(oc^{-}\)
≤ 1.1
-7.0
≥ 11.1
-4.7
\(os^{-}\)
≤ 1
-4.1
≥ 10
-4.1
\(or^{-}\)
≤ 1
-1.6
≥ 10
-1.6
\(s^{+}\), \(r ^{+}\), et \(c^{+}\)
≤ 1.2
0.8
≥ 7.94
0.5
Figure 4.1.7.6.-E – \( C_{p} C_{g} \) on roofs with a slope of \( 27° \lt \alpha \leq 45° \)
Zone
l'aire, m2.
\( C_{p} C_{g} \)
\(s^{-}\)
≤ 0.75
-2.1
≥ 7.95
-1.9
\(r ^{-}\)
≤ 1.26
-1.8
≥ 12.6
-1.5
\(c^{-}\)
≤ 0.75
-2.1
≥ 7.95
-1.9
\(oc^{-}\)
≤ 1
-3.8
≥ 10.9
-3.3
\(os^{-}\)
≤ 1
-3.8
≥ 10.9
-3.3
\(or^{-}\)
≤ 1
-1.8
≥ 10
-1.8
\(s^{+}\), \(r ^{+}\), et \(c^{+}\)
≤ 0.8
1.6
≥ 7
1.5
Figure 4.1.7.6.-G – \( C_{p} C_{g} \) on roofs with a slope of \( 3° \lt \alpha \leq 10° \) Monoslope Roof
Zone
l'aire, m2.
\( C_{p} C_{g} \)
\(s^{-}\)
≤ 2
-2.5
≥ 11
-2.4
\(r ^{-}\)
≤ 1
-2.0
≥ 10.9
-2.0
\(c^{-}\)
≤ 1.2
-3.4
≥ 11
-2.4
s’
≤ 1.2
-3.0
≥ 12.3
-2.8
c’
≤ 0.9
-5.0
≥ 11
-3.0
\(s^{+}\), \(r ^{+}\), et \(c^{+}\)
≤ 1.29
-0.6
≥ 12.3
-0.3
Figure 4.1.7.6.-G – \( C_{p} C_{g} \) on roofs with a slope of \( 10° \lt \alpha \leq 30° \) Monoslope Roof
Zone
l'aire, m2.
\( C_{p} C_{g} \)
\(s^{-}\)
≤ 0.83
-3,0
≥ 8.75
-2.2
\(r ^{-}\)
≤ 0.92
-2.6
≥ 11
-1.95
c’
≤ 0.75
-5.5
≥ 7.5
-2.7
\(s^{+}\), \(r ^{+}\), et \(c^{+}\)
≤ 1
0.9
≥ 8
0.5
Références:
Mark Mitchell, Baurzhan Muftakhidinov and Tobias Winchen et al, “Engauge Digitizer Software.” Webpage: http://markummitchell.github.io/engauge-digitizer, Last Accessed: juillet 12, 2024
Conseil national de recherches du Canada. (2015). Code national du bâtiment du Canada, 2015. Conseil national de recherches du Canada.
