Environmental Charge
Wind Charge Calculatrice
Prepare wind pressure pour wall girts, roof poutres, canopy members, et cladding appui rails by combining velocity pressure avec external et internal pressure coefficients.
Wind Charge Entrees
A wall member starter avec positive external pressure et a modest internal pressure allowance.
Wind Charge Summary
Coefficient summary
| qz x G | 0,80 x 1,00 |
| Cpe - Cpi | 0,80 - -0,20 |
| Total member wind charge | 7,20 kN |
Calculation Basis
Assumptions & Limits
- Velocity pressure et pressure coefficients remain project hypotheses et do not replace wind-zone analysis.
- The page prepares charge entrees but does not apply full design combinations or code partial factors automatically.
- Changing tributary width, local peaks, or an uncertain charge path require a more detailed model.
Reference Basis
Reference Wind Setups
| Best use | Wind pressure preparation for roof, wall, canopy, and cladding-support members |
| Primary output | Net pressure, absolute design pressure, line load, and support reaction estimate |
| Typical handoff | Beam solver, roof/wall member checks, load combinations |
| Model scope | Pressure-to-line-load conversion; wind zoning and velocity-pressure derivation are project inputs |
Notes techniques
- Use pressure coefficients et velocity pressure from the governing project standard et the correct roof or wall zone.
- The signed net pressure indicates pressure direction. The member line charge uses the absolute value pour a conservative magnitude handoff.
- Corner zones, edge zones, canopies, parapets, et openings can change wind coefficients sharply et should not be averaged without revue.
Calculation Method
- Net wind pressure: p = q_z G (C_pe - C_pi). External et internal pressure coefficients are combined avec velocity pressure et gust factor.
- Design pressure magnitude: p_abs = |p|. The absolute value is used pour line-charge magnitude while the signed pressure still shows direction.
- Line charge: w = p_abs x b_tr. Tributary width converts surface pressure into the member line charge.
Questions frequentes
- Does this calculate wind speed or exposure category? No. Enter the velocity pressure et coefficients from the selected code basis. This page focuses on transparent pressure-to-member-charge conversion.
- Why can net pressure be negative? A negative value usually represents suction or uplift relative to the selected positive direction. The line charge reports the absolute magnitude pour member checks.
- Can I use this pour cladding appui rails? Yes, if the tributary width matches the spacing or supported panel width et the pressure coefficients match the correct zone.
Pages associees