Zones A–E, cpe coefficients, qp distribution on the windward wall, external pressure by zone and internal pressure separately.
Results
Detailed report
About this calculation
Zones A–E, cpe coefficients, qp distribution on the windward wall, external pressure by zone and internal pressure separately.
Design basis
EN 1991-1-4, 7.2.2, Table 7.1 (KZ NA 2021)
Input data
Wind at the site: Site; Kazakhstan wind zone; Fundamental basic wind velocity vb,0; Directional factor cdir; Season factor cseason; Terrain category (Table 4.1); Orography factor c0; Air density ρ
Building: L — building length (along the ridge, x axis); W — building width (y axis); h — building height (to the top); Roof (in the scheme); Roof pitch α; Wind direction θ; Strip height hstrip (0 — auto)
Coefficients: Loaded area A; Area A
Internal pressure (7.2.9): Coefficient cpi; cpi,max; cpi,min; Openings in dominant face / other faces; cpe at openings of dominant face
Output
External pressure coefficients cpe and pressures by zone
Peak velocity pressure qp(z) with intermediate values
Zone layout and a detailed PDF, Word, Excel report
FAQ
Where do I get the basic wind velocity for Kazakhstan?
Start typing a settlement name — the wind zone and vb,0 are filled from the SP RK EN 1991-1-4 map. The zone map is also available as a separate page.
Is internal pressure included?
Yes, cpi per 7.2.9; internal pressure is given as a separate load and is not added to the external pressure.
Can the report be used in a design?
The report shows formulas, substitutions and clause references. Check national parameters against the current National Annex; the designer is responsible for the result.