Load derivation
area loads → panel-point loads along the length and across the width
Snow NBC 4.1.6.2
S = Is·[Ss·(Cb·Cw·Cs·Ca) + Sr] = 1·[2·(0.8·1·1·1) + 0.2] = 1.800 kPa
Wind NBC 4.1.7
p = Iw·q·Ce·Ct·CgCp = -0.6075 kPa (negative = uplift) · width per line b = B/n = 5.000 m
Loaded chord lines: [6, 7, 8, 9, 10] · [16, 17, 18, 19, 20] — interior node FZ = −q·b·a, end node = half.
Load view
arrows scaled to magnitude, per load case
3D — case D
Elevation X–Z
Elevation Y–Z
Plan X–Y
| Case D totals | ΣFX | ΣFY | ΣFZ |
|---|---|---|---|
| Joint loads (kN) | 0.000 | 0.000 | -180.000 |
| Σ UDL·L (kN) | 0.000 | 0.000 | -26.974 |
| Σ reactions (kN) | 1.72e-13 | 6.44e-15 | 206.974 |
| Out of balance | 1.72e-13 | 6.44e-15 | -1.93e-12 |
Case D — joint loads
each row keeps its derivation source
| Joint | FX | FY | FZ | MX | MY | MZ | Source |
|---|---|---|---|---|---|---|---|
| 6 | 0.000 | 0.000 | -11.250 | 0.000 | 0.000 | 0.000 | D: end panel point = ½ × -1.5000 × 5.000 × 3.000 |
| 7 | 0.000 | 0.000 | -22.500 | 0.000 | 0.000 | 0.000 | D: interior panel point = -1.5000 × 5.000 × 3.000 |
| 8 | 0.000 | 0.000 | -22.500 | 0.000 | 0.000 | 0.000 | D: interior panel point = -1.5000 × 5.000 × 3.000 |
| 9 | 0.000 | 0.000 | -22.500 | 0.000 | 0.000 | 0.000 | D: interior panel point = -1.5000 × 5.000 × 3.000 |
| 10 | 0.000 | 0.000 | -11.250 | 0.000 | 0.000 | 0.000 | D: end panel point = ½ × -1.5000 × 5.000 × 3.000 |
| 16 | 0.000 | 0.000 | -11.250 | 0.000 | 0.000 | 0.000 | D: end panel point = ½ × -1.5000 × 5.000 × 3.000 |
| 17 | 0.000 | 0.000 | -22.500 | 0.000 | 0.000 | 0.000 | D: interior panel point = -1.5000 × 5.000 × 3.000 |
| 18 | 0.000 | 0.000 | -22.500 | 0.000 | 0.000 | 0.000 | D: interior panel point = -1.5000 × 5.000 × 3.000 |
| 19 | 0.000 | 0.000 | -22.500 | 0.000 | 0.000 | 0.000 | D: interior panel point = -1.5000 × 5.000 × 3.000 |
| 20 | 0.000 | 0.000 | -11.250 | 0.000 | 0.000 | 0.000 | D: end panel point = ½ × -1.5000 × 5.000 × 3.000 |
| + generated self-weight UDL wZ = −γ·A on all 48 members (read-only part of case D) | |||||||
Combination matrix
NBC Table 4.1.3.2.-A · click a row to make it active
| ID | Description | Type | D | L | S | W | E | SLS limit |
|---|---|---|---|---|---|---|---|---|
| ULS1 | 1.4D | ULS | — | |||||
| ULS2a | 1.25D + 1.5L + 1.0S | ULS | — | |||||
| ULS2b | 1.25D + 1.5L + 0.4W | ULS | — | |||||
| ULS3a | 1.25D + 1.5S + 1.0L | ULS | — | |||||
| ULS3b | 1.25D + 1.5S + 0.4W | ULS | — | |||||
| ULS4a | 1.25D + 1.4W + 0.5L | ULS | — | |||||
| ULS4b | 1.25D + 1.4W + 0.5S | ULS | — | |||||
| ULS4c | 0.9D + 1.4W | ULS | — | |||||
| ULS4d | 0.9D + 1.4W + 0.5S | ULS | — | |||||
| ULS5 | 1.0D + 1.0E + 0.5L + 0.25S | ULS | — | |||||
| SLS1 | 1.0D + 1.0L | SLS | L/360 | |||||
| SLS2 | 1.0D + 0.9S | SLS | L/360 |