Il generatore di carico SkyCiv utilizza i valori digitalizzati delle seguenti cifre nel calcolo del \( C_{p} C_{g} \) nel calcolo delle pressioni del vento di progetto per i componenti strutturali e i rivestimenti:
Figura 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;
Figura 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;
Figura 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; e
Figura 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 – Calcoli del carico del vento utilizzando NBCC 2015 e 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.
Figura 4.1.7.6.-B – \( C_{p} C_{g} \) on individual walls for the design of cladding and secondary structural members
Zona
l'Area, mq.
\( C_{p}C_{g}\)
\(e^{-}\)
≤ 1
-2.1
≥ 50
-1.5
\(w^{-}\)
≤ 1
-1.8
≥ 50
-1.5
\(e^{+}\) e \(w^{+}\)
≤ 1
1.8
≥ 50
1.3
Figura 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
Zona
l'Area, mq.
\( C_{p} C_{g} \)
\(s^{-}\)
≤ 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
\(s^{+}\), \(r^{+}\), e \(c^{+}\)
≤ 1
0.5
≥ 10
0.33
Figura 4.1.7.6.-E – \( C_{p} C_{g} \) on roofs with a slope of \( 7° \lt \alpha \leq 27° \)
Zona
l'Area, mq.
\( C_{p} C_{g} \)
\(s^{-}\)
≤ 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
\(s^{+}\), \(r^{+}\), e \(c^{+}\)
≤ 1.2
0.8
≥ 7.94
0.5
Figura 4.1.7.6.-E – \( C_{p} C_{g} \) on roofs with a slope of \( 27° \lt \alpha \leq 45° \)
Zona
l'Area, mq.
\( C_{p} C_{g} \)
\(s^{-}\)
≤ 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
\(s^{+}\), \(r^{+}\), e \(c^{+}\)
≤ 0.8
1.6
≥ 7
1.5
Figura 4.1.7.6.-G – \( C_{p} C_{g} \) on roofs with a slope of \( 3° \lt \alpha \leq 10° \) Monoslope Roof
Zona
l'Area, mq.
\( C_{p} C_{g} \)
\(s^{-}\)
≤ 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
\(s^{+}\), \(r^{+}\), e \(c^{+}\)
≤ 1.29
-0.6
≥ 12.3
-0.3
Figura 4.1.7.6.-G – \( C_{p} C_{g} \) on roofs with a slope of \( 10° \lt \alpha \leq 30° \) Monoslope Roof
Zona
l'Area, mq.
\( C_{p} C_{g} \)
\(s^{-}\)
≤ 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
\(s^{+}\), \(r^{+}\), e \(c^{+}\)
≤ 1
0.9
≥ 8
0.5
Riferimenti:
Mark Mitchell, Baurzhan Muftakhidinov and Tobias Winchen et al, “Engauge Digitizer Software.” Webpage: http://markummitchell.github.io/engauge-digitizer, Last Accessed: luglio 12, 2024
Consiglio nazionale delle ricerche del Canada. (2015). National Building Code of Canada, 2015. Consiglio nazionale delle ricerche del Canada.
